S90.08 – Advanced SOA Design & Architecture (S90-08A)

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  Using the Reliable Messaging pattern can improve the quality of messaging-based communication.

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  The Reliable Messaging pattern is applied to databases, not services.

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  The Reliable Messaging pattern is one of the patterns that can be associated with the Enterprise Service Bus compound pattern.

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  The Reliable Messaging pattern is always applied together with the Atomic Service Transaction pattern.
  

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  redundantly deployed services

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  service agents that perform load-balanced access to services that are not redundantly deployed

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  compositions that compose redundantly deployed services

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  core service logic contained within services that do not rely on the redundantly deployed service
  

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  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.

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  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.

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  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.

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  None of the above.