QUESTION: 41

The Invoice service in an accounting firm is heavily reused by different service compositions. The owners of the service decide to protect its integrity by disallowing access to any part of its underlying implementation and further want to avoid the risk of having this service create a single point of failure.
Which two patterns should they apply in order to accomplish this goal?

Contract Centralization, Decoupled Contract
Domain Inventory, Redundant Implementation
Data Model Transformation, Service Data Replication
Contract Centralization, Redundant Implementation

Answer(s): D

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QUESTION: 42

Which of the following statements is true?

The Enterprise Service Bus pattern is primarily concerned with message processing logic, while the Orchestration pattern is primarily concerned with service composition logic.
The Enterprise Service Bus pattern is primarily concerned with synchronous messaging logic, while the Orchestration pattern is primarily concerned with asynchronous messaging logic.
The Enterprise Service Bus pattern is primarily concerned with service composition logic, while the Orchestration pattern is primarily concerned with message processing logic.
None of these statements are true.

Answer(s): A

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QUESTION: 43

Which of the following statements accurately describes the difference between the Atomic Service Transaction pattern and the Compensating Service Transaction pattern?

The Atomic Service Transaction pattern is more suitable in situations that require real-time activity processing, whereas the Compensating Service Transaction pattern is more suitable for long-running activity processing.
The Atomic Service Transaction pattern provides support for the rollback of changes, whereas the Compensating Service Transaction pattern does not.
The Atomic Service Transaction pattern does not rely on pre-defined alternative exception handling logic, whereas the Compensating Service Transaction pattern does.
All of the above.

Answer(s): D

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QUESTION: 44

A service composition architecture with the following requirements needs to be created: 1. Services will have different periods of availability. 2. Sometimes the destination of a message cannot be determined until runtime. 3. All the services do not support the same messaging protocol. Of the following choices, which patterns should be used to address these requirements?

Event-Driven Messaging, Intermediate Routing, Atomic Service Transaction
Protocol Bridging, Compensating Service Transaction, Asynchronous Queuing
Intermediate Routing, Data Format Transformation, Asynchronous Queuing
Protocol Bridging, Intermediate Routing, Asynchronous Queuing

Answer(s): D

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