Arcitura Education S90.08 Exam Questions Instant Access

Question 1

If a service consumer program needs to get data from a service that is not available, it can poll the service by periodically issuing a request message. This type of interaction can be inefficient because it can lead to unnecessary message transmissions. Which of the following statements describes a solution to this problem?

ABy applying the Messaging Metadata pattern, the service consumer can write a request identifier in the message header. Service agents then intercept the request messages and do not forward those that contain a previously detected identifier. This practice eliminates the delivery of the duplicate messages to the service.

BThe Event-Driven Messaging pattern can be applied to establish a messaging framework in which service consumers are automatically notified of relevant runtime service events.

CBy applying the Atomic Service Transaction pattern, a service can be designed to invoke an alternative exception handling process when it is unavailable to receive a given message.

DNone of the these statements describe solutions that directly solve this problem.

Answer : B

Question 2

A service agent has a technical contract that allows it to be explicitly invoked by service consumer programs.

ATrue

BFalse

Answer : B

Question 3

The Protocol Bridging pattern addresses problems that occur when services using different transport protocols or different versions of the same transport protocol try to communicate.

ATrue

BFalse

Answer : A

Question 4

Which of the following is a common problem associated with the application of the Policy Centralization pattern?

AChanges to a shared policy definition can affect all services that rely upon it, which in turn, can affect all service consumers that have formed dependencies on the corresponding service contracts.

BChanges to a shared data model can affect all services that rely upon it, which in turn, can affect all service consumers that have formed dependencies on the corresponding service contracts.

CChanges to a shared database can affect all services that rely upon it, which in turn, can affect all service consumers that have formed dependencies on the corresponding service contracts.

DNone of the above.

Answer : A

Question 5

When applying the Messaging Metadata pattern, it is customary to place business document data in the message header and supplementary messaging metadata in the message body.

ATrue

BFalse

Answer : B

Question 6

Which of the following represent common types of logic that can be placed within a service fa?ade component?

ABehavior correction logic used to compensate for changes in the behavior of the core service logic.

BProtocol bridging logic that dynamically converts from one transport protocol to another at runtime.

CRelaying logic that simply relays input and output messages to and from the core service logic.

DTransformation logic that performs runtime data model or data format conversion.

Answer : A, B, C, D

Question 7

Which of the following statements about the subscriber role established by the application of the Event-Driven Messaging pattern is true?

Aa service can have multiple consumers as subscribers

Ba consumer can only subscribe to one service

Ca service can only have one consumer as a subscriber

DAll of these statements are true.

Answer : A

Arcitura Education Advanced SOA Design & Architecture S90.08 Exam Questions