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2014年6月7日星期六

S90-05A Exam Dumps, S90-08A Real Dumps

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NO.1 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

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NO.2 The application of the Contract Centralization pattern requires that runtime access policies be
implemented.
A. True
B. False
Answer:B

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NO.3 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

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NO.4 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

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NO.5 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

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NO.6 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

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NO.7 A service agent has a technical contract that allows it to be explicitly invoked by service consumer
programs.
A. True
B. False
Answer:B

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NO.8 Each service composition within a service inventory shares the same service composition architecture.
A. True
B. False
Answer:B

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2014年1月20日星期一

The Best SOA Certified Professional S90-01A exam practice questions and answers

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NO.1 Below are four statements about business and technology alignment, as it pertains to service-oriented
computing. Which of these statements is false?
A. Business and technology alignment represents the extent to which an IT enterprise and its automated
systems can mirror and evolve in alignment with the business.
B. Service-oriented computing promotes the abstraction and accurate encapsulation and expression of
business logic in services. This supports business and technology alignment.
C. The pursuit of business and technology alignment can be supported by the collaboration of business
analysts and technology experts during analysis and modeling phases.
D. In order for an IT enterprise to increase business and technology alignment, its business analysts must
become more technical and assume the responsibilities of technology experts so that they can
independently design quality business services that take both business and technology considerations
into account.
Answer: D

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NO.2 In order to achieve __________ we have traditionally required __________ projects. With
service-orientation, we aim to establish an intrinsic level of __________ within each service so as to
reduce the need for __________ effort.
A. vendor diversity, integration, vendor diversity, design
B. agility, development, scalability, development
C. interoperability, integration, interoperability, integration
D. autonomy, integration, statelessness, integration
Answer: C

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NO.3 Which of the following statements is true?
A. "Contract first" design is important to SOA because it makes you think about service contract design
options at the same time that you are building the underlying service logic.
B. "Contract first" design is important to SOA because it forces you to establish standardized service
contracts prior to the development of the underlying service logic.
C. "Contract first" design is important to SOA because without a contract, services cannot be invoked.
However, there is no preference as to when, during the service delivery lifecycle, the contract should be
designed or established.
D. "Contract first" design is an unproven design technique that is not commonly employed when
delivering service-oriented solutions and is therefore not considered important to SOA.
Answer: B

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NO.4 Which of the following statements is false?
A. The governance burden of services is not impacted by the SOA project delivery approach.
B. The bottom-up approach to SOA project delivery results in less up-front impact, but will usually
increase the eventual governance burden of services.
C. Alternative approaches exist that provide a compromise between bottom-up and top-down SOA project
delivery approaches.
D. Up-front analysis as part of a top-down SOA project delivery approach helps reduce the eventual
governance burden of services.
Answer: A

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NO.5 Which of the following statements is false?
A. The design standardization of service contracts helps increase interoperability between services.
B. Design standardization can introduce organizational and cultural challenges because it requires that
the design standards be regularly enforced.
C. The design standardization of service contracts helps avoid the need for transformation technologies.
D. Design standardization is not relevant to the design of service compositions. It is only relevant to the
design of individual services.
Answer: D

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NO.6 Which of the following statements does not make sense?
A. Intrinsic interoperability is important because it helps increase the quantity of integration projects that
may be required to accommodate new business requirements, thereby fostering agility.
B. Intrinsic interoperability is important because it enables services to exchange data without having to
resort to transformation technologies.
C. Intrinsic interoperability is important because it is fundamental to enabling services to be repeatedly
composed.
D. Intrinsic interoperability is important because one of the goals of service-oriented computing is to
increase intrinsic interoperability.
Answer: A

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NO.7 Which of the following statements is true.?
A. To apply service-orientation requires the use of Web services.
B. Web services are required in order to build service-oriented solutions.
C. When discussing SOA and service-oriented computing, the term "Web service" must always be
synonymous with (have the same meaning as) the term "service".
D. None of these statements are true.
Answer: D

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NO.8 Which of the following statements is false?
A. A service is a unit of logic to which service-orientation has been applied to a meaningful extent.
B. Services are designed to increase the need for integration.
C. Services are the fundamental building blocks of service-oriented solutions.
D. A service composition is comprised of services.
Answer: B

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NO.9 Which of the following statements accurately describes the strategic benefit of Increased Federation?
A. A target state whereby all services are always consistently delivered as Web services.
B. A target state in which the entire enterprise has been successfully service-oriented.
C. A target state whereby the enterprise has adopted SOA by replacing all legacy environments with
custom-developed services.
D. A target state whereby standardized service contracts have been established to express a consistent
and unified service endpoint layer.
Answer: D

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NO.10 Which of the following is not a benefit of maintaining a vendor-neutral and business-driven context for a
service-oriented architecture?
A. Establish a technology architecture with a fixed scope and purpose that remains unchanged,
regardless of how the business may need to change over time.
B. Avoid establishing a technology architecture that will need to be replaced in the near future when it no
longer adequately fulfills business requirements.
C. Leverage new technological innovation in order to maximize the fulfillment of business requirements.
D. Establish a technology architecture that can stay in alignment with how the business may need to
change over time.
Answer: A

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NO.1 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.2 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.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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2013年12月26日星期四

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Exam Code: S90-05A
Exam Name: SOA Certified Professional (SOA Technology Lab)
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Total Q&A: 40 Questions and Answers
Last Update: 2013-12-25

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NO.1 You are a consultant helping a large bank implement an on-line banking service for its customers. The
first operation you need to build is one that allows a customer to initiate a transfer of funds. You are
presented with the following sample XML document that represents the funds transfer information that
this operation needs to be able to receive:
<transfer>
< fromAccount>12345 </fromAccount>
< toAccount>44432 </toAccount>
<amount>2000</amount>
</transfer>
You are also provided with the following sample that shows that the response message sent by the
service needs to return a single element with text content:
<transferStatus>SUCCESS</transferStatus>
Which of the following XML schemas will validate the two samples shown above?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: C

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NO.2 A partner organization has given you samples of XML documents retrieved from their product
information database. The three samples they have sent you are: Because they are an important partner,
you have agreed to write a service to accept XML documents in their format. However, they did not send
you a schema, so you are tasked with defining a schema that will correctly validate their documents.
Which of the following XML schemas will successfully validate each of the above XML document
fragments.?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: B

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NO.3 Your company has developed a service that allows your customers to check the status of an order. The
schema for the service is shown here:
A new customer plans to use your service, but they want to test it first. They have asked for two sample
XML documents that show typical input and output message content. Which of the following pairs of XML
elements will validate with the schema shown above?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: D

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NO.4 Your developer is asked to build a Timesheet service that is able to receive timesheet submissions for
an internal payroll system. Service consumers need to be able to send this service request message
based on a root "employeeHours" element within the SOAP message body. The "employeeHourse"
element will contain "ernpID" and "hours" child elements. Furthermore, the service needs to return a
message based on a "response" element that contains "empID" and "status" child elements.
Your developer comes to you with the following WSDL definition: The only revision you suggest is that the
value of the "style" attribute of the "soap: binding" element be changed to "document" instead of "rpc".
Why?
A. With a value of "rpc", the root element within the SOAP message body will have the name of the
operation, and therefore cannot be named "employeeHours" as indicated by the requirements.
B. With a value of "rpc", the root element within the SOAP message body is unable to be part of an
operation that contains both "input" and "output" elements.
C. The value of "rpc" is not a valid value for the "style" attribute.
D. None of the above.
Answer: A

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NO.5 Your company has developed a PO service that allows customers to submit purchase order documents.
The message sent by a customer must be based on a predefined "purchaseOrder" element and the
message received by the customer is based on a "messageAcknowledgement" element. These two
elements are defined in the following two separate XML Schema definitions: The "purchaseOrder.xsd"
schema:
Note that these two schemas have different namespaces. That is because the "purchaseOrder.xsd"
schema is specific to purchase order-related functions, while the "ack.xsd" schema is more generic and
used for a variety of different purposes.
A. Option A
B. Option B
C. Option C
D. Option D
Answer: A

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NO.1 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

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NO.2 ___________ is an industry standard that describes mechanisms for issuing, validating, renewing and
cancelling security tokens.
A. WS-Security
B. WS-Trust
C. WS-SecureConversation
D. WS-SecurityPolicy
Answer: B

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NO.3 The use of XML schemas for data validation helps avoid several types of data-centric threats.
A. True
B. False
Answer: A

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NO.4 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

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NO.5 Security policies defined using WS-SecurityPolicy can be used to convey which of the following
requirements to a service consumer?
A. Whether transport-layer or message-layer security needs to be used
B. The encryption type that needs to be used for transport-layer security
C. The algorithms that need to be used for cryptographic operations
D. The type of security token that must be used
Answer: A,C,D

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NO.6 Service A has recently been the victim of XPath injection attacks. Messages sent between Service A
and Service C have traditionally been protected via transport-layer security. A redesign of the service
composition architecture introduces Service B, which is positioned as an intermediary service between
Service A and Service C. The Message Screening pattern was applied to the design of Service B. As part
of the new service composition architecture, transport-layer security is replaced with message-layer
security for all services, but Service A and Service C continue to share the same encryption key. After the
new service composition goes live, Service A continues to be subjected to XPath injection attacks. What
is the reason for this?
A. The message screening logic can only work for Service C. Therefore, Service A is not protected.
B. Because message-layer security is being used, it is not possible for the message screening logic in
Service B to inspect messages without having the encryption key that is shared by Service A and Service
C.
C. XPath injection attacks are not prevented by message screening logic or message-layer security.
D. None of the above.
Answer: B

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NO.7 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

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NO.8 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

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NO.9 The use of session keys and symmetric cryptography results in:
A. Increased performance degradation
B. Increased reliability degradation
C. Reduced message sizes
D. None of the above
Answer: D

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NO.10 The Service Perimeter Guard pattern has been applied to help avoid denial of service attacks for a
service inventory. As a result, services within the service inventory are only accessible via a perimeter
service However, denial of service attacks continue to succeed and services within the service inventory
become unavailable to external service consumers. What is the likely cause of this?
A. The application of the Service Perimeter Guard pattern needs to be combined with the application of
the Message Screening pattern in order to mitigate denial of service attacks.
B. The perimeter service itself is the victim of denial of service attacks. As a result, none of the services
inside the service inventory can be accessed by external service consumers.
C. The Trusted Subsystem pattern should have been applied so that each service has a dedicated trusted
subsystem.
D. The Service Perimeter Guard pattern does not help avoid denial of service attacks.
Answer: B

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NO.11 How can the use of pre-compiled XPath expressions help avoid attacks?
A. Pre-compiled XPath expressions execute faster and therefore help avoid denial of service attacks.
B. Pre-compiled XPath expressions reduce the chance of missing escape characters, which helps avoid
XPath injection attacks
C. Pre-compiled XPath expressions contain no white space, which helps avoid buffer overrun attacks
D. They can't because XPath expressions cannot be pre-compiled
Answer: B

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NO.12 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

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NO.13 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

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NO.14 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

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NO.15 Service A's logic has been implemented using managed code. An attacker sends an XML bomb to
Service A. As a result, Service A's memory consumption started increasing at an alarming rate and then
decreased back to normal. The service was not affected by this attack and quickly recovered. Which of
the following attacks were potentially avoided?
A. XML parser attack
B. Buffer overrun attack
C. Insufficient authorization attack
D. Denial of service
Answer: A,D

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2013年12月8日星期日

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Exam Name: SOA Certified Professional (Fundamental SOA & Service-Oriented Computing)
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NO.1 Which of the following statements is false?
A. The design standardization of service contracts helps increase interoperability between services.
B. Design standardization can introduce organizational and cultural challenges because it requires that
the design standards be regularly enforced.
C. The design standardization of service contracts helps avoid the need for transformation technologies.
D. Design standardization is not relevant to the design of service compositions. It is only relevant to the
design of individual services.
Answer: D

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NO.2 Which of the following statements is false?
A. The governance burden of services is not impacted by the SOA project delivery approach.
B. The bottom-up approach to SOA project delivery results in less up-front impact, but will usually
increase the eventual governance burden of services.
C. Alternative approaches exist that provide a compromise between bottom-up and top-down SOA project
delivery approaches.
D. Up-front analysis as part of a top-down SOA project delivery approach helps reduce the eventual
governance burden of services.
Answer: A

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NO.3 In order to achieve __________ we have traditionally required __________ projects. With
service-orientation, we aim to establish an intrinsic level of __________ within each service so as to
reduce the need for __________ effort.
A. vendor diversity, integration, vendor diversity, design
B. agility, development, scalability, development
C. interoperability, integration, interoperability, integration
D. autonomy, integration, statelessness, integration
Answer: C

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NO.4 Which of the following statements does not make sense?
A. Intrinsic interoperability is important because it helps increase the quantity of integration projects that
may be required to accommodate new business requirements, thereby fostering agility.
B. Intrinsic interoperability is important because it enables services to exchange data without having to
resort to transformation technologies.
C. Intrinsic interoperability is important because it is fundamental to enabling services to be repeatedly
composed.
D. Intrinsic interoperability is important because one of the goals of service-oriented computing is to
increase intrinsic interoperability.
Answer: A

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NO.5 Below are four statements about business and technology alignment, as it pertains to service-oriented
computing. Which of these statements is false?
A. Business and technology alignment represents the extent to which an IT enterprise and its automated
systems can mirror and evolve in alignment with the business.
B. Service-oriented computing promotes the abstraction and accurate encapsulation and expression of
business logic in services. This supports business and technology alignment.
C. The pursuit of business and technology alignment can be supported by the collaboration of business
analysts and technology experts during analysis and modeling phases.
D. In order for an IT enterprise to increase business and technology alignment, its business analysts must
become more technical and assume the responsibilities of technology experts so that they can
independently design quality business services that take both business and technology considerations
into account.
Answer: D

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NO.6 Which of the following statements is true?
A. "Contract first" design is important to SOA because it makes you think about service contract design
options at the same time that you are building the underlying service logic.
B. "Contract first" design is important to SOA because it forces you to establish standardized service
contracts prior to the development of the underlying service logic.
C. "Contract first" design is important to SOA because without a contract, services cannot be invoked.
However, there is no preference as to when, during the service delivery lifecycle, the contract should be
designed or established.
D. "Contract first" design is an unproven design technique that is not commonly employed when
delivering service-oriented solutions and is therefore not considered important to SOA.
Answer: B

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NO.7 Which of the following statements is false?
A. A service is a unit of logic to which service-orientation has been applied to a meaningful extent.
B. Services are designed to increase the need for integration.
C. Services are the fundamental building blocks of service-oriented solutions.
D. A service composition is comprised of services.
Answer: B

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NO.8 Which of the following is not a benefit of maintaining a vendor-neutral and business-driven context for a
service-oriented architecture?
A. Establish a technology architecture with a fixed scope and purpose that remains unchanged,
regardless of how the business may need to change over time.
B. Avoid establishing a technology architecture that will need to be replaced in the near future when it no
longer adequately fulfills business requirements.
C. Leverage new technological innovation in order to maximize the fulfillment of business requirements.
D. Establish a technology architecture that can stay in alignment with how the business may need to
change over time.
Answer: A

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NO.9 Which of the following statements accurately describes the strategic benefit of Increased Federation?
A. A target state whereby all services are always consistently delivered as Web services.
B. A target state in which the entire enterprise has been successfully service-oriented.
C. A target state whereby the enterprise has adopted SOA by replacing all legacy environments with
custom-developed services.
D. A target state whereby standardized service contracts have been established to express a consistent
and unified service endpoint layer.
Answer: D

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NO.10 Which of the following statements is true.?
A. To apply service-orientation requires the use of Web services.
B. Web services are required in order to build service-oriented solutions.
C. When discussing SOA and service-oriented computing, the term "Web service" must always be
synonymous with (have the same meaning as) the term "service".
D. None of these statements are true.
Answer: D

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NO.1 Which of the following are common types of cloud service consumers? SelectALL THAT APPLY
A. Software programs capable of remotely accessing cloud services with published service contracts.
B. Services capable of remotely accessing cloud services with published service contracts.
C. Humans that use workstations running software capable of remotely accessing IT resources positioned
as cloud services.
D. Mobile devices running software capable of remotely accessing IT resources positioned as cloud
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Answer: A,B,D

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NO.2 Service agents are provided only by runtime environments and operating systems. As a result, service
agents cannot be custom-developed. Select the correct answer.
A. True
B. False
Answer: B

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NO.3 Measured usage is only limited to tracking statistics for billing purposes. It does not encompass the
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relevant to clouds that charge for usage. Select the correct answer. ?
A. True
B. False
Answer: B

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NO.4 .A(n) ____________________ cloud is a cloud environment owned by a third-party cloud provider and
accessible to external cloud consumers. The IT resources in the cloud are generally offered to cloud
consumers at a cost. Select the correct answer.
A. public
B. on-premise
C. private
D. None of the above.
Answer: A

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consumers build cloud-based solutions to conform to proprietary requirements imposed by cloud
providers. This makes it more difficult to move to new cloud providers in the future.Select the correct
answer.
A. True
B. False
Answer: A

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2013年11月12日星期二

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Exam Code: S90-04A
Exam Name: SOA Certified Professional (SOA Project Delivery & Methodology)
Free One year updates to match real exam scenarios, 100% pass and refund Warranty.
Total Q&A: 100 Questions and Answers
Last Update: 2013-11-12

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NO.1 A service candidate is:
A. a conceptual service
B. a proposed service that may not yet physically exist
C. a modeled service produced via a service modeling process
D. a modeled service that initially acts as the starting point for the physical design of the service
Answer: A,B,C,D

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NO.2 Which of the following statements is true?
A. The meet-in-the-middle delivery approach allows an on-going top-down analysis to occur while
services are designed and delivered. The only requirement is that delivered services eventually be
updated to be kept in alignment with the results of the top-down analysis.
B. The meet-in-the-middle delivery approach is essentially based on the bottom-up approach in that it
allows services to be delivered without up-front analysis. The only difference is that the
meet-in-the-middle approach advocates the use of object-orientation principles instead of
service-orientation principles.
C. The meet-in-the-middle delivery approach is essentially based on the top-down approach in that it
allows services to be delivered after the completion of the top-down analysis. The only difference is that
the meet-in-the-middle approach advocates the use of people that act as mediators who ensure that
business analysts and technology architects can collaborate harmoniously.
D. None of these statements are true.
Answer: A

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NO.3 The Claims Solution project is responsible for delivering a service composition comprised of seven
services. The project team is following a meet-in-the-middle approach whereby a service analyst and two
service architects will continue carrying out a top-down analysis effort after the initial set of services is
designed and developed. What will happen after the top-down analysis completes and the final service
candidates are noticeably different from the services that have already been delivered?
A. The previously delivered services remain in use until they can no longer fulfill their functional
requirements, at which point they are retired and replaced with new services based on the final service
candidates.
B. The previously delivered services are later redesigned and redeveloped as per the final service
candidates in order to bring the services in the Claims Solution in alignment with the target service
inventory blueprint.
C. The previously delivered services are not changed and the final service candidates serve as a constant
reminder as to how they should have been designed.
D. None of the above.
Answer: B

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NO.4 In a service-oriented analysis process, business and technology experts are encouraged to
collaborate hands-on so that they can jointly model service candidates.
A. True
B. False
Answer: A

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NO.5 Which of the following statements makes sense?
A. We delivered the project using a meet-in-the-middle approach, which allowed us to start building
services before completing our top-down analysis.
B. We delivered the project using a meet-in-the-middle approach, which allowed us to complete our
service inventory blueprint before delivering our services.
C. We delivered the project using a meet-in-the-middle approach, which allowed us to bypass up-front
analysis altogether so that we could build our services in the shortest possible timeframe.
D. None of these statements make sense.
Answer: A

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NO.6 The Inventory Management System project is delivering a modest solution comprised of three services.
The project team is following a bottom-up approach whereby service developers are building the services
to fulfill tactical (short-term) requirements. Although not everyone agrees with this approach, it does
actually directly support the following service-oriented computing goal:
A. Increased Intrinsic Interoperability
B. Increased Business and Technology Alignment
C. Increased Federation
D. None of the above.
Answer: D

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NO.7 Which of the following statements is false?
A. With the bottom-up approach, services are built on an "as need" basis and are modeled to encapsulate
application logic to best serve the immediate requirements of the solution.
B. The bottom-up approach is often motivated by integration needs that may require establishing
point-to-point integration channels between legacy systems.
C. The bottom-up approach is focused primarily on maximizing service reuse. Therefore, special attention
is paid to the documentation of service profile information that is used to create complete service catalog
entries.
D. The bottom-up approach can result in the creation of hybrid services that contain a mix of logic from
different sources.
Answer: C

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NO.8 The primary deliverable of the service inventory analysis is a ____________ of the service inventory.
A. blueprint
B. contract
C. composition architecture
D. legend
Answer: A

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NO.9 Bottom-up delivery is generally focused on fulfilling ____________ requirements while top-down
delivery is generally focused on fulfilling ____________ requirements.
A. tactical (short-term), tactical (short-term)
B. strategic (long-term), strategic (long-term)
C. tactical (short-term), strategic (long-term)
D. strategic (long-term), tactical (short-term)
Answer: C

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NO.10 Which of the following tends to be the most expensive and time consuming project delivery strategy?
A. bottom-up
B. top-down
C. meet-in-the-middle
D. round-about
Answer: C

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NO.11 Top-down approaches typically ____________ the long-term governance burden of services.
A. increase
B. decrease
C. eliminate
D. None of the above.
Answer: B

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NO.12 An SOA project carried out with a top-down approach can contain phases that require the completion
of the following tasks:
A. development of services
B. design of services
C. analysis of services
D. testing of services
Answer: A,B,C,D

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NO.13 Two service delivery projects are being carried out concurrently. Each project has its own project team.
Even though both projects are delivering services for the same service inventory, each project team is
given complete independence as to how services are designed and developed and what design
standards are to be used. Which of the following statements describes a likely consequence of this
approach.?
A. The service inventory will be comprised of services that comply to different design standards and these
services will therefore not be compatible or interoperable.
B. Services with redundant and overlapping logic may be delivered because no effort was made to
coordinate the delivery of the services between the two projects.
C. One project team may decide to follow a top-down delivery approach, whereas the other project team
may follow a bottom-up delivery approach.
D. All of the above.
Answer: D

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NO.14 Which of the following statements makes sense?
A. The bottom-up approach is tactical (short-term) and therefore advocates that up-front analysis effort be
carried out before the service inventory blueprint is finalized.
B. The top-down approach is tactical (short-term) and therefore advocates that up-front analysis effort be
carried out before the service inventory blueprint is finalized.
C. The bottom-up approach is strategic (long-term) and therefore advocates that up-front analysis effort
be carried out before the service inventory blueprint is finalized.
D. The top-down approach is strategic (long-term) and therefore advocates that up-front analysis effort be
carried out before the service inventory blueprint is finalized.
Answer: D

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NO.15 SOA projects introduce new considerations that tend to augment the traditional project lifecycle as
follows:
A. they tend to introduce the need for more up-front analysis effort
B. they tend to require closer collaboration between business and technology experts
C. they tend to require a careful prioritization of tactical (short-term) and strategic (long-term)
requirements
D. they tend to introduce new project roles
Answer: A,B,C,D

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Exam Code: S90-20A
Exam Name: SOA Certified Professional (SOA Security Lab)
Free One year updates to match real exam scenarios, 100% pass and refund Warranty.
Total Q&A: 30 Questions and Answers
Last Update: 2013-11-12

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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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