Question 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.

Accepted Answer

The Asynchronous Queuing pattern allows the service consumer and service to operate independently, enabling them to revert to a stateless condition while the data exchange is still in progress.

Question 2

The Protocol Bridging and Data Model Transformation patterns can be applied together to the same message or data exchange.

Accepted Answer

The Protocol Bridging pattern focuses on converting communication protocols, while the Data Model Transformation pattern deals with converting data formats or structures. They can be applied together to ensure both protocol compatibility and data format consistency in a message or data exchange.

Question 3

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?
A) By 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.
B) The Event-Driven Messaging pattern can be applied to establish a messaging framework in which service consumers are automatically notified of relevant runtime service events.
C) By 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.
D) None of these statements describe solutions that directly solve this problem.

Accepted Answer

The Event-Driven Messaging pattern allows service consumers to be automatically notified of relevant events, reducing the need for inefficient polling.

Question 4

Which of the following statements are false?
A) Using the Reliable Messaging pattern can improve the quality of messaging-based communication.
B) The Reliable Messaging pattern is applied to databases, not services.
C) The Reliable Messaging pattern is one of the patterns that can be associated with the Enterprise Service Bus compound pattern.
D) The Reliable Messaging pattern is always applied together with the Atomic Service Transaction pattern.

Accepted Answer

The Reliable Messaging pattern is applied to services, not databases, making statement B false. Statement D is false because the Reliable Messaging pattern can be applied independently of the Atomic Service Transaction pattern.

Question 5

Based on the publisher and subscriber roles established by the application of the Event-Driven Messaging pattern, which of the following statements are true?
A) a service, acting as a publisher, issues event notification messages to an event management program that is responsible for broadcasting the messages
B) a service consumer, acting as a subscriber, can selectively subscribe to specific events
C) an intermediate event management program enters the role of subscriber when accepting event subscriptions
D) upon receiving a message associated with an event that a service consumer subscribed to, the service consumer enters the publisher role

Accepted Answer

A service, acting as a publisher, issues event notification messages to an event management program that is responsible for broadcasting the messages. A service consumer, acting as a subscriber, can selectively subscribe to specific events.

Question 6

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.

Accepted Answer

The Protocol Bridging pattern is designed to facilitate communication between services that use different transport protocols or versions, ensuring interoperability.

Question 7

The application of the Protocol Bridging pattern automatically results in the application of the Data Model Transformation pattern.

Accepted Answer

The Protocol Bridging pattern focuses on enabling communication between different protocols, while the Data Model Transformation pattern deals with converting data formats. They can be applied independently.

Question 8

Which of the following statements about the subscriber role established by the application of the Event-Driven Messaging pattern is true?
A) a service can have multiple consumers as subscribers
B) a consumer can only subscribe to one service
C) a service can only have one consumer as a subscriber
D) All of these statements are true.

Accepted Answer

A service can have multiple consumers as subscribers, allowing for a flexible and scalable event-driven architecture.

Question 9

The messaging framework established by the application of the Event-Driven Messaging pattern positions a(n) ___________ as being responsible for the broadcast of event notification messages.
A) event management program
B) synchronous queue
C) event-driven Web service
D) database

Accepted Answer

The event management program is responsible for the broadcast of event notification messages in the Event-Driven Messaging pattern.

Question 10

The application of the Protocol Bridging pattern helps overcome disparity between:
A) transport protocols
B) messaging protocols
C) transaction protocols
D) policy protocols

Accepted Answer

The answer of The application of the Protocol Bridging pattern...

Question 11

The Reliable Messaging pattern requires:
A) the use of standardized service contracts in order to enable message atomic transaction details to be carried in the message header
B) a framework for temporarily persisting messages and issuing acknowledgements
C) the application of the Official Endpoint pattern in order to enable acknowledgement features
D) a framework capable of bridging disparate messaging protocols in order to exchange schemas between compatible services

Accepted Answer

The Reliable Messaging pattern requires a framework for temporarily persisting messages and issuing acknowledgements to ensure messages are delivered reliably even in the event of failures.

Question 12

Protocol bridging features are a common part of enterprise service bus products and can be provided through the use of adapters.

Accepted Answer

Protocol bridging is a feature of enterprise service bus (ESB) products that allows different communication protocols to interoperate, often using adapters to facilitate the conversion between protocols.

Question 13

Which of the following does not make sense when considering the contents of a technical service contract for a SOAP-based Web service?
A) The Schema Centralization pattern supports the creation of independent data models that define data transmitted in SOAP messages.
B) The Decoupled Contract pattern results in the separation of the service contract from the service implementation, allowing the service contract to be independently designed and governed.
C) The application of the Policy Centralization pattern eliminates redundancy and inconsistency by creating a single, master policy bound to the WSDL definition of every service in a service inventory.
D) The Legacy Wrapper pattern can be used to expose a legacy system as a SOAP-based Web service with a standardized technical service contract.

Accepted Answer

The answer of Which of the following does not make...

Question 14

Two services need to exchange a business document that exists as an XML document. Each service's contract uses a different XML schema to represent the business document structure. This results in two different XML representations for the same business data. Which of the following patterns can be used to enable the exchange of the business document between these two services?
A) Data Format Transformation
B) Protocol Bridging
C) Atomic Service Transaction
D) Data Model Transformation

Accepted Answer

The answer of Two services need to exchange a business...

Question 15

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.

Accepted Answer

The Reliable Messaging pattern involves a service agent that ensures message delivery by storing the message, sending it to the service, and only deleting it after receiving an acknowledgement from the service, as described in option A.

Question 16

A common XML-based technology used to apply the Data Model Transformation pattern is:
A) XHTML
B) WS-Policy
C) WSDL
D) None of the above.

Accepted Answer

None of the options listed (XHTML, WS-Policy, WSDL) are specifically used for Data Model Transformation in XML-based technologies.

Question 17

The application of the Intermediate Routing pattern relies on the use of service agents. In order for the pattern to be applied properly, these service agents must be active in that they must change data within the message as part of their routing functionality.

Accepted Answer

The Intermediate Routing pattern does not require service agents to change data within the message; their primary role is to determine the routing path based on message content or context.

Question 18

In the message exchange framework established by the application of the Reliable Messaging pattern, what roles are typically fulfilled by service agents?
A) service agents can process positive acknowledgements
B) service agents can process negative acknowledgements
C) service agents can load balance messages
D) service agents can route messages based on their content

Accepted Answer

Service agents in the Reliable Messaging pattern are responsible for ensuring message delivery, which includes processing both positive and negative acknowledgements to confirm receipt or identify issues in message delivery.

Question 19

Which of the following statements is false?
A) When applying the Data Format Transformation pattern, data format transformation logic can be the responsibility of a service façade component that is tasked with converting between proprietary and standardized data formats.
B) The Data Format Transformation pattern is applied in situations where there is a need to convert data between disparate XML schemas.
C) Some transport protocols can be associated with specific data formats, in which case it makes sense to apply the Data Format Transformation pattern together with the Protocol Bridging pattern.
D) The Data Format Transformation pattern is one of the patterns that comprise the Service Broker pattern.

Accepted Answer

The answer of Which of the following statements is false?
A)...

Question 20

Because the Service Broker pattern is part of the Enterprise Service Bus pattern, the Schema Centralization pattern is also considered part of the Enterprise Service Bus pattern.

Accepted Answer

The Service Broker pattern and Schema Centralization pattern are distinct patterns and not inherently part of the Enterprise Service Bus pattern. The inclusion of one does not imply the inclusion of the other.

Exam 4: Advanced SOA Design & Architecture (S90-08A)

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.

The Protocol Bridging and Data Model Transformation patterns can be applied together to the same message or data exchange.

Which of the following statements are false?

Based on the publisher and subscriber roles established by the application of the Event-Driven Messaging pattern, which of the following statements are true?

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.

The application of the Protocol Bridging pattern automatically results in the application of the Data Model Transformation pattern.

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

The messaging framework established by the application of the Event-Driven Messaging pattern positions a(n) ___________ as being responsible for the broadcast of event notification messages.

The application of the Protocol Bridging pattern helps overcome disparity between:

The Reliable Messaging pattern requires:

Protocol bridging features are a common part of enterprise service bus products and can be provided through the use of adapters.

Which of the following does not make sense when considering the contents of a technical service contract for a SOAP-based Web service?

Assuming the Reliable Messaging pattern is successfully applied, which of the following statements is correct?

A common XML-based technology used to apply the Data Model Transformation pattern is:

The application of the Intermediate Routing pattern relies on the use of service agents. In order for the pattern to be applied properly, these service agents must be active in that they must change data within the message as part of their routing functionality.

In the message exchange framework established by the application of the Reliable Messaging pattern, what roles are typically fulfilled by service agents?

Which of the following statements is false?

Because the Service Broker pattern is part of the Enterprise Service Bus pattern, the Schema Centralization pattern is also considered part of the Enterprise Service Bus pattern.