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試験番号：S90-18A問題集
試験科目：Fundamental SOA Security
最近更新時間：2014-02-02
問題と解答：全98問
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NO.1 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
SOA Certified Professional参考書 S90-18A練習問題 S90-18A S90-18A問題集
NO.2 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
SOA Certified Professional問題集 S90-18A参考書 S90-18A
NO.3 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
SOA Certified Professional過去問 S90-18A S90-18A過去問 S90-18A
NO.4 Which of the following is not a hashing algorithm?
A. MD5
B. X.509
C. SHA-1
D. SHA-256
Answer: B
SOA Certified Professional練習問題 S90-18A S90-18A認定証 S90-18A S90-18A認証試験
NO.5 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
SOA Certified Professional S90-18A過去問 S90-18A S90-18A
NO.6 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
SOA Certified Professional S90-18A S90-18A S90-18A
NO.7 The application of the Data Origin Authentication pattern only provides message integrity.?
A. True
B. False
Answer: B
SOA Certified Professional S90-18A S90-18A認定資格 S90-18A S90-18A
NO.8 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
SOA Certified Professional S90-18A認証試験 S90-18A S90-18A過去問 S90-18A練習問題
NO.9 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
SOA Certified Professional S90-18A S90-18A
NO.10 Digital signatures use encryption and hashing.
A. True
B. False
Answer: A
SOA Certified Professional過去問 S90-18A S90-18A参考書
NO.11 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
SOA Certified Professional認定試験 S90-18A過去問 S90-18A
NO.12 The SAML and WS-Security industry standards can be applied to the same service composition
architecture.
A. True
B. False
Answer: A
SOA Certified Professional S90-18A S90-18A練習問題 S90-18A参考書
NO.13 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
SOA Certified Professional S90-18A S90-18A S90-18A S90-18A S90-18A
NO.14 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
SOA Certified Professional認証試験 S90-18A S90-18A
NO.15 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
SOA Certified Professional認証試験 S90-18A練習問題 S90-18A S90-18A
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