C90-03A受験記対策、S90-05A参考書勉強、S90-19A学習教材

JPexamは長年にわたってずっとIT認定試験に関連するC90-03A参考書を提供しています。これは受験生の皆さんに検証されたウェブサイトで、一番優秀な試験C90-03A問題集を提供することができます。JPexamは全面的に受験生の利益を保証します。皆さんからいろいろな好評をもらいました。しかも、JPexamは当面の市場で皆さんが一番信頼できるサイトです。

現在、市場でオンラインのSOA Certified ProfessionalのS90-05A試験トレーニング資料はたくさんありますが、JPexamのSOA Certified ProfessionalのS90-05A試験トレーニング資料は絶対に最も良い資料です。我々JPexamはいつでも一番正確なSOA Certified ProfessionalのS90-05A資料を提供するように定期的に更新しています。それに、JPexamのSOA Certified ProfessionalのS90-05A試験トレーニング資料が一年間の無料更新サービスを提供しますから、あなたはいつも最新の資料を持つことができます。

S90-19A試験の準備をするとき、がむしゃらにITに関連する知識を学ぶのは望ましくない勉強法です。実際は試験に合格するコツがあるのですよ。もし試験に準備するときに良いツールを使えば、多くの時間を節約することができるだけでなく、楽に試験に合格する保障を手にすることもできます。どんなツールかと聞きたいでしょう。それはもちろんJPexamのS90-19A問題集ですよ。

IT業界の中でたくさんの野心的な専門家がいって、IT業界の中でより一層頂上まで一歩更に近く立ちたくてSOA Certified ProfessionalのC90-03A試験に参加して認可を得たくて、SOA Certified Professional のC90-03A試験が難度の高いので合格率も比較的低いです。SOA Certified ProfessionalのC90-03A試験を申し込むのは賢明な選択で今のは競争の激しいIT業界では、絶えず自分を高めるべきです。しかし多くの選択肢があるので君はきっと悩んでいましょう。

試験番号：C90-03A問題集
試験科目：Cloud Technology Lab
最近更新時間：2014-06-25
問題と解答：全21問 C90-03A 試験問題集
100％の返金保証。1年間の無料アップデート。

>>詳しい紹介はこちら

 

試験番号：S90-05A問題集
試験科目：SOA Technology Lab
最近更新時間：2014-06-25
問題と解答：全40問 S90-05A 全真問題集
100％の返金保証。1年間の無料アップデート。

>>詳しい紹介はこちら

 

試験番号：S90-19A問題集
試験科目：Advanced SOA Security
最近更新時間：2014-06-25
問題と解答：全83問 S90-19A 全真問題集
100％の返金保証。1年間の無料アップデート。

>>詳しい紹介はこちら

 

SOA Certified Professional S90-19A認証試験に合格することが簡単ではなくて、SOA Certified Professional S90-19A証明書は君にとってはIT業界に入るの一つの手づるになるかもしれません。しかし必ずしも大量の時間とエネルギーで復習しなくて、弊社が丹精にできあがった問題集を使って、試験なんて問題ではありません。

S90-05A認定試験に関連する参考資料を提供できるサイトが多くあります。しかし、資料の品質が保証されることができません。それと同時に、あなたに試験に失敗すれば全額返金という保障を与えることもできません。普通の参考資料と比べて、JPexamのS90-05A問題集は最も利用に値するツールです。JPexamの指導を元にして、あなたは試験の準備を十分にすることができます。しかも、楽に試験に合格することができます。IT領域でより大きな進歩を望むなら、S90-05A認定試験を受験する必要があります。IT試験に順調に合格することを望むなら、JPexamのS90-05A問題集を使用する必要があります。

JPexamの専門家チームがSOA Certified ProfessionalのS90-05A認証試験に対して最新の短期有効なトレーニングプログラムを研究しました。SOA Certified ProfessionalのS90-05A認証試験に参加者に対して30時間ぐらいの短期の育成訓練でらくらくに勉強しているうちに多くの知識を身につけられます。

購入前にお試し,私たちの試験の質問と回答のいずれかの無料サンプルをダウンロード：http://www.jpexam.com/S90-19A_exam.html

NO.1 The use of XML schemas for data validation helps avoid several types of data-centric threats.
A. True
B. False
Answer: A

SOA Certified Professional学校   S90-19A費用   S90-19A番号   S90-19A問題集   S90-19Aテスト   S90-19A独学

NO.2 When designing XML schemas to avoid data-centric threats, which of the following are valid
considerations?
A. The maxOccurs attribute needs to be specified using a restrictive value.
B. The <xsd:any> element needs to be avoided.
C. The <xsd:restriction> element can be used to create more restrictive user-defined simple types.
D. All of the above.
Answer: B,D

SOA Certified Professional短期   S90-19A PDF   S90-19A   S90-19A学習   S90-19A練習

NO.3 The Trusted Subsystem pattern is applied to a service that provides access to a database. Select the
answer that best explains why this service is still at risk of being subjected to an insufficient authorization
attack.
A. Attackers can steal confidential data by monitoring the network traffic that occurs between the service
and the database.
B. Because the Service Perimeter Guard pattern was also not applied, the database is not protected by a
firewall.
C. If an attacker gains access to the security credentials used by the service to access the database, the
attacker can access the database directly.
D. None of the above.
Answer: C

SOA Certified Professional日記   S90-19A問題集   S90-19A短期   S90-19A認定証   S90-19A

NO.4 Which of the following can directly contribute to making a service composition architecture more
vulnerable to attacks?
A. Reliance on intermediaries
B. Reliance on transport-layer security
C. Reliance on open networks
D. All of the above
Answer: D

SOA Certified Professional認定   S90-19A初心者   S90-19Aテスト   S90-19A教本   S90-19A認定証

NO.5 The application of the Service Loose Coupling principle does not relate to the use of security policies
as part of service contracts.
A. True
B. False
Answer: B

SOA Certified Professionalふりーく   S90-19A   S90-19A過去   S90-19A独学   S90-19A対策

NO.6 Service A needs to be designed so that it supports message integrity and so that only part of the
messages exchanged by the service are encrypted. You are asked to create the security policy for this
service. What type of policy assertions should you use?
A. Token assertions
B. Protection assertions
C. Security binding assertions
D. Service A's security requirements cannot be expressed in a policy
Answer: B

SOA Certified Professional模擬   S90-19A資格   S90-19A

NO.7 An alternative to using a ___________ is to use a __________.
A. Public key, private key
B. Digital signature, symmetric key
C. Public key, key agreement security session
D. Digital signature, asymmetric key
Answer: C

SOA Certified Professional勉強法   S90-19A   S90-19A   S90-19A番号

NO.8 Which of the following types of attack always affect the availability of a service?
A. Exception generation attack
B. SQL injection attack
C. XPath injection attack
D. None of the above
Answer: D

SOA Certified Professional勉強法   S90-19A PDF   S90-19Aガイド

SOA Certified Professional C90-06A C90-05A C90-03A C90-02A認定試験に合格できる機会を逃さぬ

今の競争の激しいIT業界ではSOA Certified ProfessionalのC90-06A C90-05A C90-03A C90-02A試験にパスした方はメリットがおおくなります。給料もほかの人と比べて高くて仕事の内容も豊富です。でも、この試験はそれほど簡単ではありません。

弊社は君の試験に合格させるとともにまた一年の無料の更新のサービスも提供し、もし試験に失敗したら全額で返金いたします。しかしその可能性はほとんどありません。弊社は100%合格率を保証し、購入前にネットでダウンロードしてください。

試験番号：C90-06A問題集
試験科目：Cloud Architecture Lab
最近更新時間：2014-03-02
問題と解答：全15問
100％の返金保証。1年間の無料アップデート。

試験番号：C90-05A問題集
試験科目：Advance Cloud Architecture - C90.05
最近更新時間：2014-03-02
問題と解答：全50問
100％の返金保証。1年間の無料アップデート。

試験番号：C90-03A問題集
試験科目：Cloud Technology Lab
最近更新時間：2014-03-02
問題と解答：全21問
100％の返金保証。1年間の無料アップデート。

試験番号：C90-02A問題集
試験科目：Cloud Technology Concepts
最近更新時間：2014-03-02
問題と解答：全87問
100％の返金保証。1年間の無料アップデート。

IT 職員のそれぞれは昇進または高給のために頑張っています。これも現代社会が圧力に満ちている一つの反映です。そのためにSOA Certified ProfessionalのC90-06A C90-05A C90-03A C90-02A認定試験に受かる必要があります。適当なトレーニング資料を選んだらこの試験はそんなに難しくなくなります。JPexamのSOA Certified ProfessionalのC90-06A C90-05A C90-03A C90-02A試験トレーニング資料は最高のトレーニング資料で、あなたの全てのニーズを満たすことができますから、速く行動しましょう。

あなたはインターネットでSOA Certified ProfessionalのC90-06A C90-05A C90-03A C90-02A認証試験の練習問題と解答の試用版を無料でダウンロードしてください。そうしたらあなたはJPexamが用意した問題集にもっと自信があります。早くJPexamの問題集を君の手に入れましょう。

あなたはいまSOA Certified ProfessionalのC90-06A C90-05A C90-03A C90-02A認定試験にどうやって合格できるかということで首を傾けているのですか。SOA Certified ProfessionalのC90-06A C90-05A C90-03A C90-02A認定試験は現在のいろいろなIT認定試験における最も価値のある資格の一つです。ここ数十年間では、インターネット・テクノロジーは世界中の人々の注目を集めているのです。それがもう現代生活の不可欠な一部となりました。その中で、SOA Certified Professionalの認証資格は広範な国際的な認可を得ました。ですから、IT業界で仕事している皆さんはSOA Certified Professionalの認定試験を受験して資格を取得することを通して、彼らの知識やスキルを向上させます。C90-06A C90-05A C90-03A C90-02A認定試験はSOA Certified Professionalの最も重要な試験の一つです。この資格は皆さんに大きな利益をもたらすことができます。

IT認定試験を受ける受験生はほとんど仕事をしている人です。試験に受かるために大量の時間とトレーニング費用を費やした受験生がたくさんいます。ここで我々は良い学習資料のウェブサイトをお勧めします。JPexamというサイトです。JPexamの SOA Certified ProfessionalのC90-06A C90-05A C90-03A C90-02A試験資料を利用したら、時間を節約することができるようになります。我々はあなたに向いて適当の資料を選びます。しかも、サイトでテストデータの一部は無料です。もっと重要のことは、リアルな模擬練習はあなたがSOA Certified ProfessionalのC90-06A C90-05A C90-03A C90-02A試験に受かることに大きな助けになれます。JPexam のSOA Certified ProfessionalのC90-06A C90-05A C90-03A C90-02A試験資料はあなたに時間を節約させることができるだけではなく、あなたに首尾よく試験に合格させることもできますから、JPexamを選ばない理由はないです。

購入前にお試し,私たちの試験の質問と回答のいずれかの無料サンプルをダウンロード：http://www.jpexam.com/C90-06A_exam.html

NO.1 Cloud Service A is hosted by Virtual Server A, which is hosted by Hypervisor A that resides on
Physical Server A.
Cloud Storage Device A is used to store media library data that is continuously replicated with a
redundant, secondary implementation of Cloud Storage A (not shown). Access to Cloud Service A is
monitored by Pay-Per-Use Monitor A.
Access to Cloud Storage Device A is monitored by Pay-Per-Use Monitor B.
Pay-Per-Use Monitors A and B capture billing-related usage data that is forwarded to a billing
management system that is hosted by Physical Server B.
Cloud Service Consumer A accesses Cloud Service A and the usage data is captured by Pay-Per-Use
Monitor A (1). Cloud Consumer B accesses Cloud Storage Device A via a usage and administration
portal that it uses to upload media data (2). This usage is captured by Pay-Per-Use Monitor B (3).
Pay-Per-Use Monitors A and B store collected usage data in the billing management system (4),
which is later used by the cloud provider to bill for the usage of Cloud Service A and Cloud Storage
Device A.
Each service instance of Cloud Service A requires a virtual server with 2 virtual CPUs and 4 GBs of
RAM at a package price of $2.00 for each initial invocation and an additional $0.50 for each
consecutive 60 seconds of usage. Cloud Service Consumer A accesses Cloud Service A twice in one
day. The two exchanges with Cloud Service A last 60 seconds and 120 seconds. For that one day, the
organization that owns Cloud Service Consumer A is billed $6.50, which it determines is incorrect.
After complaining to the cloud provider, it is discovered that the rapid provisioning system
responsible for provisioning instances of Cloud Service A is not de-provisioning Cloud Service A
when Cloud Service Consumer A indicates it has completed an exchange. Instead, Cloud Service A is
de-provisioned after a 60 second timeout that occurs after Cloud Service Consumer A is completed
with an exchange.
Storage space on Cloud Storage Device A can only be purchased in units of terabytes (TBs), with
each TB costing $1 per day. Cloud Consumer B purchases 5 TBs of storage space on day 1 and stores
5 TBs of data on days 6 and 7. Cloud Consumer B was expecting to be billed $10.00, but is billed $35.
After raising a complaint, Cloud Consumer B is informed by the cloud provider that cloud consumers
are billed based on the allocation of storage space, regardless of how much storage space they
actually use.
Which of the following statements describes a solution that can update the cloud architecture to
avoid these billing-related problems and discrepancies?
A. The Pay-as-You-Go pattern can be applied together with the Usage Monitoring pattern to
establish a monitoring and billing system capable of de-provisioning Cloud Service A instances when
they are no longer required. The Dynamic Data Normalization pattern can be applied to eliminate
any redundant data stored by Cloud Consumer A so that the amount of required storage space is
minimized.
B. The Platform Provisioning pattern can be applied to create an intelligent automation script
capable of immediately de-provisioning cloud service instances. The Redundant Storage pattern can
be applied to introduce a secondary cloud storage device for which storage space can be billed
based on actual usage.
C. The Self-Provisioning pattern can be applied to enable the organization that owns Cloud Service
Consumer B to configure how and to what extent Cloud Service A instances need to be provisioned.
The Resource Management pattern can be applied to establish a storage system that bills cloud
consumers for actual storage space usage only.
D. None of the above.
Answer: D

SOA Certified Professional   C90-06A   C90-06A問題集   C90-06A過去問   C90-06A認証試験

NO.2 Ready-Made Environment A is hosted by Virtual Server A and Ready-Made Environments is
hosted by Virtual Server B.
Virtual Servers A and B are hosted by Hypervisor A, which is part of a hypervisor cluster. An
automated scaling listener intercepts cloud consumer requests and automatically invokes the
on-demand generation of additional instances of ready-made environments, as required.
A self-service portal and a usage and administration portal are also available to cloud consumers.
The self-service portal can be used to request the provisioning of a new ready-made environment.
Any cloud consumer that has already had a ready-made environment provisioned can configure and
view information about that ready-made environment via the usage and administration portal.
Cloud Consumer A accesses Ready-Made Environment A to work on the development of a new
cloud service (1). Cloud Consumer B accesses Ready-Made Environment B to test a recently
completed application comprised of three cloud services (2). Cloud Consumer C accesses the
self-service portal to request the creation of a new ready-made environment (3).
The cloud provider is required to perform an emergency maintenance outage on a cloud storage
device used by all ready-made environments. The unplanned outage takes two hours. During this
period, Cloud Consumers A and B are unable to access Ready-Made Environments A and B and
Cloud Consumer C receives an error when submitting a request to create a new ready-made
environment.
After the maintenance outage is over, Cloud Consumers A and B encounter the following problems:
-Cloud Consumer A is unable to recover session data that was kept in memory for an extended
period, prior to the time of the outage. -Cloud Consumer B has no access to Virtual Server B, which
was moved to Hypervisor B during
the maintenance outage. When Cloud Consumer B attempts to ping Virtual Server B, the
request times out.
Even though Cloud Consumer C is able to log into the usage and administration portal to confirm
that its ready-made environment was successfully provisioned, the unexpected outage has raised
concerns about the stability of the ready-made environment's underlying infrastructure. Cloud
Consumer C informs the cloud provider that it cannot proceed with its lease of the ready-made
environment if there are future occurrences of this type of maintenance outage.
Which of the following statements can help address the problems and concerns of the three cloud
consumers?
A. A combination of the Load Balanced Virtual Server Instances and Synchronized Operating State
patterns can be applied to establish a system capable of deferring state across multiple cloud
storage devices, each located on a different virtual server. The Elastic Disk Provisioning pattern can
be applied to persist virtual server configuration data across hypervisors so that connectivity is
preserved whenever a virtual server is relocated to a different hypervisor. The Zero Downtime
pattern can be applied to ensure that none of the ready-made environments or virtual servers are
subject to a maintenance outage in the future.
B. The Elastic Disk Provisioning and Cross-Storage Device Vertical Tiering patterns can be applied to
establish a cloud architecture that supports a set of cloud storage devices, each with different tiers
that cloud consumers can choose to scale to The Synchronized Operating State pattern can be
applied in combination with the Hypervisor Clustering pattern to avoid further virtual server and
ready-made environment connectivity problems. The Redundant Storage pattern can be applied so
that if a cloud storage device fails, a secondary implementation of the cloud storage device
automatically takes over processing tasks, thereby avoiding outages.
C. The Service State Management pattern can be appliedto establish a system that canpersist
session data in a database. The Persistent Virtual Network Configuration pattern can be applied to
centralize the configuration data necessary for virtual servers to remain accessible after they have
been relocated to different hypervisors. The Storage Maintenance Window pattern can be applied
to establish a system that allows cloud storage devices to be maintained without causing outages.
D. None of the above.
Answer: C

SOA Certified Professional認定資格   C90-06A   C90-06A

NO.3 Cloud Sen/ice A is hosted by Virtual Server A, which is hosted by Hypervisor A on Physical
Server
A. Cloud Service B is hosted by Virtual Server B.
Virtual Server C hosts Cloud Services C and D.
Virtual Server B and Virtual Server C are hosted by Hypervisor B on Physical Server B.
Cloud Service Consumer A accesses Cloud Service A (1). Cloud Service Consumer B accesses Cloud
Service A (2). Cloud Service Consumer C accesses Cloud Service A (3) and then accesses Cloud
Service B (4).
Cloud Service Consumers A, B and C simultaneously access Cloud Service A.
Cloud Service Consumer C receives a runtime exception and its request for access is rejected. It is
determined that Cloud Service Consumer C attempted to upload a large amount of input data for
Cloud Service A, which exceeded the bandwidth threshold of the virtual network. The cloud
architecture needs to be improved to avoid this from happening again.
Cloud Service Consumer C's repeated access of Cloud Service B imposes workloads that are large
and highly unpredictable. After some time, Cloud Service B begins to delay its responses and
sometimes times out entirely. The cloud resource administrator discovers that Virtual Server B is
unstable and close to failure primarily because its CPU and memory resources are being used to
their maximum capacity.
Cloud Services C and D are being positioned as SaaS products for use by a range of cloud consumer
organizations. After their initial release, they begin to quickly use up the available memory in Virtual
Server C, primarily because of the large amounts of state and session data they need to place into
memory for extended periods.
Which of the following statements lists the patterns that can be applied to solve these three
requirements and problems?
A. Elastic Network Capacity, Load Balanced Virtual Server Instances, Service State Management
B. Elastic Resource Capacity, Service Load Balancing, Synchronized Operating State
C. Persistent Virtual Network Configuration. Load Balanced Virtual Switches, Service State
Management
D. None of the above.
Answer: A

SOA Certified Professional   C90-06A   C90-06A   C90-06A

NO.4 Cloud Service A requires access to Cloud Storage Device A, which contains LUNs A and B.
Cloud Service A is hosted by Virtual Server A, which resides on Hypervisor A on Physical Server A.
Virtual Server B hosts Cloud Service B and Cloud Service C.
Cloud Service Consumer A accesses Cloud Service A (1), which then accesses LUN A or B on Cloud
Storage Device A (2). After receiving the requested data from Cloud Service A, Cloud Service
Consumer A forwards the data to Cloud Service B (3), which then writes it to Cloud Storage Device B
(4).
Cloud Service Consumer A belongs to Organization A.
Organization A uses LUN A and LUN B on Cloud Storage Device A to store their important client
account data. Cloud Storage Device A is a low-performance cloud storage device, which begins to
cause performance issues as more data is added to LUNs A and B and as Cloud Service Consumer A
performs data access requests more frequently. Organization A asks that its cloud architecture be
upgraded to process increased quantities of data and higher volumes of data requests.
Organization A has been leasing a PaaS environment that it used to build Cloud Service A, which it
would like to make available to the general public. Organization A needs to establish a system
capable of monitoring usage of Cloud Service A for billing purposes.
The cloud provider is using a usage data collection and reporting system that gathers information on
Organization A's hosted IT resources approximately ten hours after the time of usage. One day,
Organization A attempts to retrieve information on whether Virtual Server B has available Cloud
Service C instances. They discover that they are unable to obtain the current status of Virtual Server
B.
Organization A demands a system that provides instant availability reporting.
Which of the following statements lists the patterns that can be applied to solve these three
requirements and problems?
Which of the following statements lists the patterns that can be applied to solve these three
requirements and problems?
A. Cross-Storage Device Vertical Tiering, Pay-as-You-Go. Self-Provisioning
B. Service Load Balancing, Pay-as-You-Go, Multipath Resource Access
C. Intra-Storage Device Vertical Data Tiering, Usage Monitoring, Centralized Remote Administration
D. None of the above.
Answer: D

SOA Certified Professional練習問題   C90-06A   C90-06A   C90-06A

NO.5 Cloud Storage Device A contains LUN A and can be accessed by external cloud consumers via a
proprietary user portal that is used primarily by cloud consumers to upload and manage data for
backup purposes. Pay-Per-Use Monitor A tracks the amount of data being uploaded and forwards
this information to a billing management system. Cloud Storage Device B is a secondary cloud
storage device. Data from Cloud Storage Device A is replicated synchronously to Cloud Storage
Device B using a storage replication program (not shown). Cloud Storage Device A is further
administered by a cloud resource administrator that works for the cloud provider, who accesses the
cloud storage device via an internal usage and administration portal.
Three different cloud consumers (Sarah. William, Matilda) access Cloud Storage Device A to upload
data for backup purposes (1). These three cloud consumers belong to different
departments within the same organization, and therefore all three share LUN A.
Pay-Per-Use Monitor A collects the storage space data and forwards it to the billing management
system (2).
The cloud provider offers premium and discount storage plans. With the premium plan, the data
stored on Cloud Storage Device A is also replicated to Cloud Storage Device B.
With the discount plan, the data stored on Cloud Storage Device A is not replicated. Both plans are
based on fixed-disk storage allocation. The cost of the premium plan is $5 per week for every GB of
storage space and the cost of the discount plan is $2 per week for every GB of storage space. The
SLA from the cloud provider guarantees availability of 97% for access to Cloud Storage Device A.
The three cloud consumers use Cloud Storage Device A as follows:
-Sara signs up for the discount backup plan and is allocated 50 GBs of storage space. A week later,
she uploads 10 GBs of backup data. A week after that, she uploads another 35 GBs. She later finds
out that for those two weeks her organization was billed $200, which is more than she was
expecting. After she complains to the cloud provider, she learns about how fixed-disk storage
allocation is billed. She asks the cloud provider to change her account to a different
storage plan where she is only billed for the actual amount of storage space she uses at any
given time. The cloud provider assures her that a new system will be set up to accommodate
this request.
-William is on the premium backup plan. He uploads 1 to 3 GBs of important business data every
day. After two weeks of daily uploads, he realizes that the centralized nature of the backup data on
the cloud makes it more convenient for reporting purposes than the distributed nature of the same
data in his on-premise environment. He uses an analysis tool to run queries against the cloud-based
data. However, due to the large quantity of redundant data, the queries end up being ineffective
and take too long to run. He asks the cloud provider to find a solution that can streamline the
cloud-based data by reducing redundancy. By reducing the overall quantity of the data, the analysis
queries will run faster.
-Matilda is on the discount backup plan and uploads backup data on a daily basis. Over the course
of two weeks she uploads over 200 GBs of data. She performs a daily backup at the end of each day
by identifying the data to back up and then using the proprietary user portal to run the cloud
backup procedure. This procedure can take 5 to 45 minutes, depending on the amount of data she
is uploading. Matilda performs this as her last task of the day and therefore initiates the procedure
before she leaves, but does not wait for it to complete. One day, she receives an e-mail from the
cloud provider explaining that the backup procedure from the previous day had failed due to an
unexpected hardware failure that occurred on Cloud Storage Device A.
The notification e-mail goes on to state that this type of failure falls within the 97% availability
guarantee of her organization's SLA, and is therefore in compliance with the current provisioning
agreement. Had a disaster occurred that night, the on-premise data could have been lost and
Matilda would be held accountable. Matilda contacts the cloud provider to demand that the
provisioning agreement be amended to upgrade their existing SLA to the maximum possible
availability (which, for this cloud provider, is 99.999%). The cloud provider agrees to establish a
system to accommodate this request.
Which of the following statements lists the patterns that can be applied to address the three issues
raised by the three cloud consumers?
A. Storage Workload Management, Elastic Disk Provisioning, Centralized Remote Administration
B. Elastic Disk Provisioning, Dynamic Data Normalization, Zero Downtime
C. Storage Maintenance Window, Dynamic Failure Detection and Recovery, Broad Access
D. None of the above.
Answer: B

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試験番号：S90-08A問題集
試験科目：Advanced SOA Design & Architecture
最近更新時間：2014-03-01
問題と解答：全100問
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NO.1 Which of the following patterns may also require the application of the Service Agent pattern?
A.Reliable Messaging
B.Asynchronous Queuing
C.Intermediate Routing
D.Policy Centralization
Answer:ABCD

SOA Certified Professional   S90-08A認定試験   S90-08A   S90-08A   S90-08A   S90-08A

NO.2 The Reliable Messaging pattern requires:
A.the use of standardized service contracts in order to enable message atomic transaction details to be
carried in the message header
B.a framework for temporarily persisting messages and issuing acknowledgements
C.the application of the Official Endpoint pattern in order to enable acknowledgement features
D.a framework capable of bridging disparate messaging protocols in order to exchange schemas
between compatible services
Answer:B

SOA Certified Professional   S90-08A   S90-08A   S90-08A認定資格   S90-08A認定試験

NO.3 Assuming the Reliable Messaging pattern is successfully applied, which of the following statements is
correct?
A.A service agent intercepts and stores a message from the service consumer. The service agent then
returns an acknowledgement back to the service consumer. Next, the service agent forwards the
message to the service and when it receives an acknowledgement back from the service, it deletes the
message.
B.A service agent intercepts and stores a message from the service consumer. The service agent then
forwards the message to the service. Next, the service agent receives an acknowledgement from the
service, which it returns to the service consumer. Finally, the service agent deletes the message and
related acknowledgements.
C.The service consumer stores the message and forwards it to a service agent, which issues an
acknowledgement back to the service consumer. The service agent then forwards the message to the
service and when it receives an acknowledgement from the service, the service agent informs the service
consumer so that it can delete the message and the acknowledgement.
D.None of the above.
Answer:A

SOA Certified Professional   S90-08A認定証   S90-08A   S90-08A   S90-08A認定証

NO.4 Which of the following statements is false?
A.The Contract Centralization pattern positions the service contract as the official entry point into the
service logic.
B.The Contract Centralization pattern can impose performance overhead and requires the use of design
standards.
C.The application of the Contract Centralization pattern enables access to underlying service resources
through the use of secondary or unofficial technical contracts.
D.The Decoupled Contract pattern supports the application of the Contract Centralization pattern.
Answer:C

SOA Certified Professional参考書   S90-08A問題集   S90-08A   S90-08A

NO.5 The application of the Contract Centralization pattern requires that runtime access policies be
implemented.
A. True
B. False
Answer:B

SOA Certified Professional   S90-08A認定試験   S90-08A

NO.6 Each service composition within a service inventory shares the same service composition architecture.
A. True
B. False
Answer:B

SOA Certified Professional認定試験   S90-08A認定資格   S90-08A認証試験

NO.7 The use of the Intermediate Routing pattern typically results in:
A.common routing logic being removed from service logic and placed into service agents
B.common routing logic being removed from service agents and placed into a database
C.common routing logic being physically centralized into a single service
D.common routing logic being physically centralized into a single service composition
Answer:A

SOA Certified Professional   S90-08A認定資格   S90-08A認定証

NO.8 Which of the following statements are false?
A.Using the Reliable Messaging pattern can improve the quality of messaging-based communication.
B.The Reliable Messaging pattern is applied to databases, not services.
C.The Reliable Messaging pattern is one of the patterns that can be associated with the Enterprise
Service Bus compound pattern.
D.The Reliable Messaging pattern is always applied together with the Atomic Service Transaction pattern.
Answer:BD

SOA Certified Professional   S90-08A認定試験   S90-08A認定資格   S90-08A

NO.9 The scope and size of different service inventory architectures can vary.
A. True
B. False
Answer:A

SOA Certified Professional認定資格   S90-08A   S90-08A   S90-08A認定証

NO.10 Which of the following statements is true?
A.The overuse of service agents can lead to dependencies on proprietary vendor platforms.
B.The use of service agents is limited to the service architecture.
C.Service agents are common in orchestration environments but not within enterprise service bus
environments.
D.None of these statements are true.
Answer:A

SOA Certified Professional認定資格   S90-08A認定試験   S90-08A

NO.11 Which of the following statements is false?
A.Widespread use of the Messaging Metadata pattern can be seen in the emergence of many WS-*
extensions that define industry standard SOAP header blocks that carry metadata.
B.Messaging frameworks and technologies need to provide support for the reading and writing of
message headers or properties in order to fully support the application of the Messaging Metadata
pattern.
C.The Messaging Metadata pattern is not applicable to situations where the message sender and
receiver need to participate in stateful or conversational message exchanges.
D.The Messaging Metadata pattern can support the application of patterns such as Intermediate Routing
by supplementing messages with activity-specific metadata.
Answer:C

SOA Certified Professional   S90-08A問題集   S90-08A練習問題   S90-08A   S90-08A

NO.12 Which statement regarding intermediate routing is true?
A.The application of the Intermediate Routing pattern is suitable for handling message routing
requirements that are dynamic in nature and difficult to anticipate in advance.
B.The application of the Intermediate Routing pattern is suitable for handling pre-determined message
paths with fixed routing requirements that cannot be changed at runtime.
C.The application of the Intermediate Routing pattern tends to improve runtime performance when
compared to an approach whereby routing logic is embedded within individual services.
D.None of these statements are true.
Answer:A

SOA Certified Professional   S90-08A   S90-08A過去問   S90-08A   S90-08A認定試験

NO.13 When applying the Asynchronous Queuing pattern you aim to establish an environment in which:
A.an intermediate buffer exists between a service and its service consumer
B.temporary message storage is provided in case either the service or service consumer are unavailable
C.periodic re-transmission of a message is supported until it is successfully delivered
D.enforcement of consistent, uninterrupted, synchronous communication between service and service
consumer are guaranteed
Answer:ABC

SOA Certified Professional練習問題   S90-08A   S90-08A認定資格   S90-08A   S90-08A

NO.14 The application of the Intermediate Routing pattern can result in multiple service agents intercepting a
message before it arrives at its destination.
A. True
B. False
Answer:A

SOA Certified Professional   S90-08A認定試験   S90-08A   S90-08A認定試験   S90-08A過去問   S90-08A

NO.15 Governance can become an issue with service agents because:
A.You will need to determine who will own and maintain the service agents.
B.Changes to a single service agent can impact multiple services throughout a service inventory.
C.Service agents need to be versioned, just like services.
D.All of the above.
Answer:D

SOA Certified Professional   S90-08A   S90-08A   S90-08A

NO.16 The application of the Intermediate Routing pattern can address which of the following needs?
A.The need to increase the autonomy of a service due to its reliance on a shared data source.
B.The need to perform content-based routing based upon metadata found in the message header.
C.The need for load-balanced access to a redundantly deployed service.
D.The need to provide pre-defined compensating logic for when an atomic service transaction fails.
Answer:BC

SOA Certified Professional問題集   S90-08A   S90-08A認定資格   S90-08A

NO.17 The queue established by applying the Asynchronous Queuing pattern enables service consumer and
service to revert to a stateless condition before a data exchange has fully completed.
A. True
B. False
Answer:A

SOA Certified Professional認定証   S90-08A   S90-08A

NO.18 In the message exchange framework established by the application of the Reliable Messaging pattern,
what roles are typically fulfilled by service agents?
A.service agents can process positive acknowledgements
B.service agents can process negative acknowledgements
C.service agents can load balance messages
D.service agents can route messages based on their content
Answer:AB

SOA Certified Professional問題集   S90-08A   S90-08A認定資格

NO.19 A service agent has a technical contract that allows it to be explicitly invoked by service consumer
programs.
A. True
B. False
Answer:B

SOA Certified Professional   S90-08A練習問題   S90-08A   S90-08A

NO.20 Load balancing is commonly associated with which pattern?
A.Atomic Service Transaction
B.Intermediate Routing
C.Service Broker
D.Decoupled Contract
Answer:B

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試験番号：C90-03A問題集
試験科目：Cloud Technology Lab
最近更新時間：2014-03-01
問題と解答：全21問
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NO.1 Cloud Service Consumer A invokes Cloud Service A from Cloud X (owned by Cloud Provider X) (1). To
fulfill the request from Cloud Service Consumer A, Cloud Service A needs to invoke Cloud Service B that
resides on Cloud Y (owned by Cloud Provider Y) (2). After completing its processing, Cloud Service B
sends a response to Cloud Service A (3). Cloud Service A verifies the response and then finally sends its
response to Cloud Service Consumer A (4).
The guaranteed availability of the Cloud Service A implementation is 95% and the guaranteed availability
of the Cloud Service B implementation is 95%. Which of the following statements accurately describes the
actual availability that Cloud Service Consumer A can receive based on the described scenario?
A. Because Cloud Service Consumer A's response message is processed by two separate cloud
services, the combined availability increases as follows:
1.- (1 - 0.95) X (1 - 0.95) = 0.9975 or 99.75%
B. Because Cloud Service A acts as both a cloud service and cloud service consumer in order to
process Cloud Service Consumer B's request message, Cloud Service A forms a dependency on
Cloud Service B. As a result, the combined availability decreases, as follows:
0.95 X 0.95 = 0.9025 or 90.25%
C. Cloud Service Consumer A benefits from redundant cloud service implementations, thereby
increasing the guaranteed availability as follows:
1.- (1 - (0.95 - 0.1))X (1 - (0.95 - 0.1)) = 0.9775 or 97.75%
D. As a result of the dependency formed by Cloud Service Aon Cloud Service B,the combined availability
decreases significantly as follows:
(0.95 X 0.95) - 0.1 = 0.8025 or 80.25%
Answer: B

SOA Certified Professional問題集   C90-03A   C90-03A練習問題   C90-03A認証試験

NO.2 The cloud service owner of Cloud Service A is evaluating Clouds X, Y and Z to determine which cloud
environment can offer the greatest level of reliability. All three clouds are geographically dispersed across
three separate time zones. As a result, each cloud experiences usage peaks at different times. Based on
the metrics provided, the greater the usage of a cloud, the lower its reliability. When the cloud service
owner complains to Cloud Provider A (the owner of all three clouds) that none of the clouds provide an
adequate level of reliability, Cloud Provider A suggests a solution that increases resiliency.
Which of the following statements accurately describes a solution that can be used to fulfill the resiliency
requirements of Cloud Service A.?
A. Redundant implementations of Cloud Service A are deployed in all three clouds. The failover system
mechanism and a special type of automated scaling listener mechanism are implemented to establish a
system whereby one redundant Cloud Service A implementation will automatically take over from another.
B. A cloud balancing solution is established, whereby an automated scaling listener mechanism is
implemented on each cloud in such a way that every cloud can automatically scale out to another cloud.
As a result, if reliability problems occur on any one cloud, the subsequent requests will be scaled out to
another cloud in a manner that is transparent to cloud service consumers.
C. A failover system mechanism is implemented on Cloud X, which acts as the primary point of contact for
cloud serviceconsumers. Upon failure conditions occurring, the Cloud Service A implementation on Cloud
X automatically hands over control of current and future message requests from cloud service consumers
to Cloud Y. Cloud Y retains control of cloud serviceconsumer communication until the next failure
condition occurs, at which point it hands over control to Cloud Z. Finally, if a failure condition occurs in
Cloud Z. control is handed back to Cloud X.
D. A cloud balancing solution is established, whereby a resource replication mechanism is implemented
on each cloud. This allows Cloud Service A to be automatically replicated across cloud environments,
thereby enabling each implementation of Cloud Service A to take the place of another, whenever failure
conditions occur.
Answer: A

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NO.1 Service A and Service B belong to Organization A and Service C belongs to Organization B. Service A
sends confidential messages to Service B, which forwards these messages to Service
C. The message sent to Service C is intercepted by a load balancing service agent that determines which
instance of Service C to route the message to. This entire message path needs to be encrypted in order
to ensure message confidentiality from when the message is first sent by Service A until it is received by
an instance of Service C. Organization A doesn't trust any intermediaries that may exist in between
Service B and Service C and also doesn't want to share any keys with Organization B. Furthermore, there
is a requirement to minimize any adverse effects on performance. Which of the following approaches
fulfills these requirements?
A. Use message-layer security by adding symmetric encryption between Services A, B and C. This
way,message content is not available to any intermediaries between Services B and C.
B. Because Service A and Service B exist within the same organizational boundary, use transport-layer
security to provide message confidentiality. Use message-layer security via asymmetric encryption
between Service B and Service C.
C. Use transport-layer security between Service B and Service C and use message-layer security via
asymmetric encryptionbetween Service A and Service B. This way. all the services are secured while at
the same time minimizing the performance degradation between Service B and Service C.
D. None of the above.
Answer: B

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NO.2 The application of the Data Origin Authentication pattern only provides message integrity.?
A. True
B. False
Answer: B

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NO.3 Service A relies on a shared identity store. Service B has its own identity store. Service C also has its
own identity store, but must also access the shared identity store used by Service A. Which service has
the least reduction in autonomy as a result of its relationship with identity store mechanism(s)?
A. Service A
B. Service B
C. Service C
D. The autonomy of all services is affected equally
Answer: B

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NO.4 As a requirement for accessing Service B, Service A needs to encrypt its request message. Service B
decrypts the message, makes some changes, encrypts the message, and then forwards it to Service C.
However, the message does not make it to Service C. Instead, a runtime error is raised by a service agent
that does not support encryption. This service agent only requires access to the message header in order
to route the message to the appropriate instance of Service C. It is therefore decided that the header part
of the message will not be encrypted. Which of the following can be used to address this requirement?
A. certificate authority
B. SAML
C. non-repudiation
D. None of the above
Answer: D

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NO.5 The SAML and WS-Security industry standards can be applied to the same service composition
architecture.
A. True
B. False
Answer: A

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NO.6 Digital signatures use encryption and hashing.
A. True
B. False
Answer: A

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NO.7 The manager of an IT department decides to split up an existing enterprise service inventory into two
domain service inventories. The public key used previously in the enterprise service inventory can
continue to be used in one of the domain service inventories.
A. True
B. False
Answer: A

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NO.8 A task service needs to access three entity services as part of a service composition. The task service
needs to authenticate itself every time it accesses one of the three entity services. Because the task
service must authenticate itself three times to complete its task, the current service composition design is
considered inefficient. How can it be improved while continuing to fulfill the authentication requirements?
A. Increase the network bandwidth between the task service and the entity services.
B. Use a single sign-on mechanism.
C. Remove the authentication requirements within the service composition, thereby reducing the
message size and making communication faster.
D. None of the above
Answer: B

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NO.9 Service A sends a message to Service B which reads the values in the message header to determine
whether to forward the message to Service C or Service D. Because of recent attacks on Services C and
D, it has been decided to protect the body content of messages using some form of encryption. However,
certain restrictions within the design of Service B will not permit it to be changed to support the encryption
and decryption of messages. Only Services A, C and D can support message encryption and decryption.
Which of the following approaches fulfill these security requirements without changing the role of Service
B?
A. Transport-layer security is implemented between all services.
B. Message-layer security is implemented between all services.
C. Service B is removed. Instead, the routing logic is added to Service A.
D. None of the above
Answer: B

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NO.10 Which of the following is not a hashing algorithm?
A. MD5
B. X.509
C. SHA-1
D. SHA-256
Answer: B

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NO.11 The use of XML-Encryption supports the application of the Service Abstraction principle because the
actual message remains hidden from the attacker.
A. True
B. False
Answer: B

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NO.12 The requirement to defer security related state data at runtime relates directly to the application of which
service-orientation principle?
A. Service Loose Coupling
B. Service Autonomy
C. Service Abstraction
D. None of the above.
Answer: D

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NO.13 The owner of a service inventory reports that the public key related to a certain private key has been
lost. There is a concern that this was the result of a security breach. A security specialist recommends
contacting the certificate authority in order to add the corresponding certificate to the certificate authority's
Certificate Revocation List (CRL). However, the certificate authority responds by indicating that this is not
necessary. Which of the following answers explains this response?
A. The certificate authority needs to issue a new public key instead.
B. The certificate authority requires that the existing public key needs to be changed within the existing
certificate.
C. Public keys cannot get lost because they are alreadypublicallyavailable.
D. None of the above
Answer: C

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NO.14 The application of the Brokered Authentication pattern is best suited for a scenario whereby a service
consumer does not need to re-authenticate itself with multiple services.
A. True
B. False
Answer: B

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NO.15 A service contract includes a security policy that exposes specific details of the service's underlying
implementation. This is an example of the application of which service-orientation principle?
A. Service Abstraction
B. Service Loose Coupling
C. Standardized Service Contract
D. None of the above.
Answer: D

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NO.1 Service Consumer A sends a request message to Service A (1) after which Service A retrieves financial
data from Database A (2). Service A then sends a request message with the retrieved data to Service B
(3). Service B exchanges messages with Service C (4) and Service D (5), which perform a series of
calculations on the data and return the results to Service A. Service A uses these results to update
Database A (7) and finally sends a response message to Service Consumer A (8). Component B has
direct, independent access to Database A and is fully trusted by Database A. Both Component B and
Database A reside within Organization A. Service Consumer A and Services A, B, C, and D are external to
the organizational boundary of Organization A.
Component B is considered a mission critical program that requires guaranteed access to and fast
response from Database A. Service A was recently the victim of a denial of service attack, which resulted
in Database A becoming unavailable for extended periods of time (which further compromised
Component B). Additionally, Services B, C, and D have repeatedly been victims of malicious intermediary
attacks, which have further destabilized the performance of Service A.
How can this architecture be improved to prevent these attacks?
A. A utility service is created to encapsulate Database A and to assume responsibility for authenticating all
access to the database by Service A and any other service consumers. Due to the mission critical
requirements of Component B, the utility service further contains logic that strictly limits the amount of
concurrent requests made to Database A from outside the organizational boundary. The Data
Confidentiality and Data Origin Authentication patterns are applied to all message exchanged within the
external service composition in order to establish message-layer security.
B. Service Consumer A generates a private/public key pair and sends this public key and identity
information to Service A. Service A generates its own private/public key pair and sends it back to Service
Consumer A. Service Consumer A uses the public key of Service A to encrypt a randomly generated
session key and then sign the encrypted session key with the private key. The encrypted, signed session
key is sent to Service A. Now, this session key can be used for secure message-layer communication
between Service Consumer A and Service A. The Service Perimeter Guard pattern is applied to establish
a perimeter service that encapsulates Database A in order to authenticate all external access requests.
C. Services B, C, and D randomly generate Session Key K, and use this key to encrypt request and
response messages with symmetric encryption. Session Key K is further encrypted itself asymmetrically.
When each service acts as a service consumer by invoking another service, it decrypts the encrypted
Session Key K and the invoked service uses the key to decrypt the encrypted response. Database A is
replicated so that only the replicated version of the database can be accessed by Service A and other
external service consumers.
D. The Direct Authentication pattern is applied so that when Service Consumer A submits security
credentials, Service A will be able to evaluate the credentials in order to authenticate the request
message. If the request message is permitted, Service A invokes the other services and accesses
Database A. Database A is replicated so that only the replicated version of the database can be accessed
by Service A and other external service consumers.
Answer: A

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NO.2 Service A exchanges messages with Service B multiple times during the same runtime service activity.
Communication between Services A and B has been secured using transport-layer security. With each
service request message sent to Service B (1A. IB), Service A includes an
X.509 certificate, signed by an external Certificate Authority (CA). Service B validates the certificate by
retrieving the public key of the CA (2A. 2B) and verifying the digital signature of the
X.509 certificate. Service B then performs a certificate revocation check against a separate external CA
repository (3A, 3B). No intermediary service agents reside between Service A and Service B.
To fulfill a new security requirement, Service A needs to be able to verify that the response message sent
by Service B has not been modified during transit. Secondly, the runtime performance between Services
A and B has been unacceptably poor and therefore must be improved without losing the ability to verify
Service A's security credentials. It has been determined that the latency is being caused by redundant
security processing carried out by Service B.
Which of the following statements describes a solution that fulfills these requirements?
A. Apply the Trusted Subsystem pattern to introduce a utility service that performs the security processing
instead of Service B. The utility service can verify the security credentials of request messages from
Service A and digitally sign messages sent to Service A to enable verification of message integrity.
Furthermore, the utility service can perform the verification of security credentials submitted by Service A
only once per runtime service activity. After the first messageexchange, it can issue a SAML token to
Service A that gets stored within the current session. Service A can then use this session-based token
with subsequent message exchange. Because SAML tokens have a very small validity period (in contrast
to X.509 certificates), there is no need to perform a revocation check with every message exchange.
B. Service B needs to be redesigned so that it performs the verification of request messages from Service
A only for the first message exchange during the runtime service activity. Thereafter, it can issue a SAML
token to Service A that gets stored within the current session. Service A then uses this session-based
token with subsequent message exchanges. Because SAML tokens have a very small validity period (in
contrast to X.509 certificates), there is no need to perform a revocation check with every message
exchange.
C. WS-SecurityPolicy transport binding assertions can be used to improve performance via
transport-layer security The use of symmetric keys can keep the encryption and decryption overhead to a
minimum, which will further reduce the latency between Service A and Service B. By encrypting the
messages, attackers cannot modify message contents, so no additional actions for integrity verification
are needed.
D. The Data Origin Authentication pattern can be applied together with the Service Perimeter Guard
pattern to establish a perimeter service that can verify incoming request messages sent to Service B and
to filter response messages sent to Service A. The repository containing the verification information about
the Certificate Authorities can be replicated in the trust domain of the perimeter service. When access is
requested by Service A, the perimeter service evaluates submitted security credentials by checking them
against the locally replicated repository. Furthermore, it can encrypt messages sent to Service A by
Service B. and attach a signed hash value.
Answer: A

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Last Update: 2013-09-26

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NO.1 Service A is an entity service with a functional context dedicated to invoice-related processing. Service
B is a utility service that provides generic data access to a database.
In this service composition architecture, Service Consumer A sends a SOAP message containing an
invoice XML document to Service A (1). Service A then sends the invoice XML document to Service B (2),
which then writes the invoice document to a database.
The data model used by Service Consumer A to represent the invoice document is based on XML
Schema A. The service contract of Service A is designed to accept invoice documents based on XML
Schema B. The service contract for Service B is designed to accept invoice documents based on XML
Schema A. The database to which Service B needs to write the invoice record only accepts entire
business documents in Comma Separated Value (CSV) format.
Due to the incompatibility of the XML schemas used by the services, the sending of the invoice document
from Service Consumer A through to Service B cannot be accomplished using the services as they
currently exist. Assuming that the Contract Centralization pattern is being applied and that the Logic
Centralization is not being applied, what steps can be taken to enable the sending of the invoice
document from Service Consumer A to the database without adding logic that will increase the runtime
performance requirements of the service composition?
A.Service Consumer A can be redesigned to use XML Schema B so that the SOAP message it sends is
compliant with the service contract of Service A. The Data Model Transformation pattern can then be
applied to transform the SOAP message sent by Service A so that it conforms to the XML Schema A used
by Service B. The Standardized Service Contract principle must then be applied to Service B and Service
Consumer A so that the invoice XML document is optimized to avoid unnecessary validation.
B.The service composition can be redesigned so that Service Consumer A sends the invoice document
directly to Service B. Because Service Consumer A and Service B use XML Schema A, the need for
transformation logic is avoided. This naturally applies the Service Loose Coupling principle because
Service Consumer A is not required to send the invoice document in a format that is compliant with the
database used by Service B.
C.Service Consumer A can be redesigned to write the invoice document directly to the database. This
reduces performance requirements by avoiding the involvement of Service A and Service B. It further
supports the application of the Service Abstraction principle by ensuring that Service Consumer A hides
the details of the data access logic required to write to the database.
D.None of the above.
Answer:B

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NO.2 The Client and Vendor services are agnostic services that are both currently part of multiple service
compositions. As a result, these services are sometimes subjected to concurrent access by multiple
service consumers.
The Client service is an entity service that primarily provides data access logic to a client database but
also provides some calculation logic associated with determining a client's credit rating. The Vendor
service is also an entity service that provides some data access logic but can also generate various
dynamic reports.
After reviewing historical statistics about the runtime activity of the two services, it was discovered that the
majority of concurrent runtime access is related to the processing of business rules. With the Client
service, it is the calculation logic that is frequently required and with the Vendor service it is the dynamic
reporting logic that needs to be accessed separately from the actual report generation.
Currently, due to the increasing amount of concurrent access by service consumers, the runtime
performance of both the Client and Vendor services has worsened and has therefore reduced their
effectiveness as service composition members. What steps can be taken to solve this problem without
introducing new services?
A.The Rules Centralization pattern can be applied by extracting the business rule logic from the Client
and Vendor services and placing it into a new Rules service. This will naturally improve the runtime
performance of the Client and Vendor services because they will no longer be subjected to the high
concurrent access of service consumers that require access to the business rules logic.
B.The Redundant Implementation pattern can be applied to the Client and Vendor services, thereby
establishing duplicate implementations that can be accessed when a service reaches its runtime usage
threshold. The Intermediate Routing pattern can be further applied to provide load balancing logic that
can, at runtime, determine which of the redundant service implementations is the least busy for a given
service consumer request.
C.The Rules Centralization pattern can be applied together with the Redundant Implementation pattern to
establish a scalable Rules service that is redundantly implemented and therefore capable of supporting
high concurrent access from many service consumers. The Service Abstraction principle can be further
applied to hide the implementation details of the Rules service.
D.None of the above.
Answer:B

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NO.3 Service A is an entity service with a functional context dedicated to invoice-related processing. Service
B is a utility service that provides generic data access to a database.
In this service composition architecture, Service Consumer A sends a SOAP message containing an
invoice XML document to Service A (1). Service A then sends the invoice XML document to Service B (2),
which then writes the invoice document to a database.
The data model used by Service Consumer A to represent the invoice document is based on XML
Schema A. The service contract of Service A is designed to accept invoice documents based on XML
Schema B. The service contract for Service B is designed to accept invoice documents based on XML
Schema A. The database to which Service B needs to write the invoice record only accepts entire
business documents in Comma Separated Value (CSV) format.
Due to the incompatibility of XML schemas used by the services, the sending of the invoice document
from Service Consumer A through to Service B cannot be accomplished using the services as they
currently exist. Assuming that the Contract Centralization and Logic Centralization patterns are being
applied, what steps can be taken to enable the sending of the invoice document from Service Consumer A
to the database without adding logic that will increase the runtime performance of the service
composition?
A.The Data Model Transformation pattern can be applied so that the invoice document sent by Service
Consumer A is transformed into an invoice document that is compliant with the XML Schema B used by
Service A. The Data Model Transformation pattern can be applied again to ensure that the invoice
document sent by Service A is compliant with XML Schema A used by Service B.
B.The service composition can be redesigned so that Service Consumer A sends the invoice document
directly to Service B. Because Service Consumer A and Service B use XML Schema A, the need for
transformation logic is avoided. This naturally applies the Service Loose Coupling principle because
Service Consumer A is not required to send the invoice document in a format that is compliant with the
database used by Service B.
C.The Standardized Service Contract principle can be applied to the service contract of Service A so that
it is redesigned to use XML Schema A. This would make it capable of receiving the invoice document from
Service Consumer A and sending the invoice document to Service B without the need to further apply the
Data Model Transformation pattern.
D.None of the above.
Answer:C

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Total Q&A: 30 Questions and Answers
Last Update: 2013-09-26

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NO.1 Service A exchanges messages with Service B multiple times during the same runtime service activity.
Communication between Services A and B has been secured using transport-layer security. With each
service request message sent to Service B (1A. IB), Service A includes an
X.509 certificate, signed by an external Certificate Authority (CA). Service B validates the certificate by
retrieving the public key of the CA (2A. 2B) and verifying the digital signature of the
X.509 certificate. Service B then performs a certificate revocation check against a separate external CA
repository (3A, 3B). No intermediary service agents reside between Service A and Service B.
To fulfill a new security requirement, Service A needs to be able to verify that the response message sent
by Service B has not been modified during transit. Secondly, the runtime performance between Services
A and B has been unacceptably poor and therefore must be improved without losing the ability to verify
Service A's security credentials. It has been determined that the latency is being caused by redundant
security processing carried out by Service B.
Which of the following statements describes a solution that fulfills these requirements?
A. Apply the Trusted Subsystem pattern to introduce a utility service that performs the security processing
instead of Service B. The utility service can verify the security credentials of request messages from
Service A and digitally sign messages sent to Service A to enable verification of message integrity.
Furthermore, the utility service can perform the verification of security credentials submitted by Service A
only once per runtime service activity. After the first messageexchange, it can issue a SAML token to
Service A that gets stored within the current session. Service A can then use this session-based token
with subsequent message exchange. Because SAML tokens have a very small validity period (in contrast
to X.509 certificates), there is no need to perform a revocation check with every message exchange.
B. Service B needs to be redesigned so that it performs the verification of request messages from Service
A only for the first message exchange during the runtime service activity. Thereafter, it can issue a SAML
token to Service A that gets stored within the current session. Service A then uses this session-based
token with subsequent message exchanges. Because SAML tokens have a very small validity period (in
contrast to X.509 certificates), there is no need to perform a revocation check with every message
exchange.
C. WS-SecurityPolicy transport binding assertions can be used to improve performance via
transport-layer security The use of symmetric keys can keep the encryption and decryption overhead to a
minimum, which will further reduce the latency between Service A and Service B. By encrypting the
messages, attackers cannot modify message contents, so no additional actions for integrity verification
are needed.
D. The Data Origin Authentication pattern can be applied together with the Service Perimeter Guard
pattern to establish a perimeter service that can verify incoming request messages sent to Service B and
to filter response messages sent to Service A. The repository containing the verification information about
the Certificate Authorities can be replicated in the trust domain of the perimeter service. When access is
requested by Service A, the perimeter service evaluates submitted security credentials by checking them
against the locally replicated repository. Furthermore, it can encrypt messages sent to Service A by
Service B. and attach a signed hash value.
Answer: A

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NO.2 Service Consumer A sends a request message to Service A (1) after which Service A retrieves financial
data from Database A (2). Service A then sends a request message with the retrieved data to Service B
(3). Service B exchanges messages with Service C (4) and Service D (5), which perform a series of
calculations on the data and return the results to Service A. Service A uses these results to update
Database A (7) and finally sends a response message to Service Consumer A (8). Component B has
direct, independent access to Database A and is fully trusted by Database A. Both Component B and
Database A reside within Organization A. Service Consumer A and Services A, B, C, and D are external to
the organizational boundary of Organization A.
Component B is considered a mission critical program that requires guaranteed access to and fast
response from Database A. Service A was recently the victim of a denial of service attack, which resulted
in Database A becoming unavailable for extended periods of time (which further compromised
Component B). Additionally, Services B, C, and D have repeatedly been victims of malicious intermediary
attacks, which have further destabilized the performance of Service A.
How can this architecture be improved to prevent these attacks?
A. A utility service is created to encapsulate Database A and to assume responsibility for authenticating all
access to the database by Service A and any other service consumers. Due to the mission critical
requirements of Component B, the utility service further contains logic that strictly limits the amount of
concurrent requests made to Database A from outside the organizational boundary. The Data
Confidentiality and Data Origin Authentication patterns are applied to all message exchanged within the
external service composition in order to establish message-layer security.
B. Service Consumer A generates a private/public key pair and sends this public key and identity
information to Service A. Service A generates its own private/public key pair and sends it back to Service
Consumer A. Service Consumer A uses the public key of Service A to encrypt a randomly generated
session key and then sign the encrypted session key with the private key. The encrypted, signed session
key is sent to Service A. Now, this session key can be used for secure message-layer communication
between Service Consumer A and Service A. The Service Perimeter Guard pattern is applied to establish
a perimeter service that encapsulates Database A in order to authenticate all external access requests.
C. Services B, C, and D randomly generate Session Key K, and use this key to encrypt request and
response messages with symmetric encryption. Session Key K is further encrypted itself asymmetrically.
When each service acts as a service consumer by invoking another service, it decrypts the encrypted
Session Key K and the invoked service uses the key to decrypt the encrypted response. Database A is
replicated so that only the replicated version of the database can be accessed by Service A and other
external service consumers.
D. The Direct Authentication pattern is applied so that when Service Consumer A submits security
credentials, Service A will be able to evaluate the credentials in order to authenticate the request
message. If the request message is permitted, Service A invokes the other services and accesses
Database A. Database A is replicated so that only the replicated version of the database can be accessed
by Service A and other external service consumers.
Answer: A

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