S90.03 Online Practice Questions and Answers

The Service Loose Coupling principle advocates which of the following coupling types? Select the correct answer.

A. Contract-to-Implementation

B. Consumer-to-Contract

C. Logic-to-Contract

D. None of the above.

The service-oriented architectural model is business-driven so that it can stay in alignment with how the business may change over time. Select the correct answer.

A. True

B. False

Which of the following statements correctly explains the difference between the Service Abstraction and Service Loose Coupling principles? Select the correct answer.

A. Service Abstraction is focused on dependencies that exist between the service contract and its underlying logic, whereas Service Loose Coupling is focused on fostering "loose state" in support of runtime state deferral

B. Service Abstraction is focused on agnostic service logic only in order to establish an agnostic abstraction layer, whereas Service Loose Coupling is focused on the relationship between the service contract and service consumers.

C. Service Abstraction is focused on hiding information about service implementation details, whereas Service Loose Coupling is focused on the positioning of the service contract in relation to the service implementation and service consumers.

D. There is no difference between these two principles. One principle name is used instead of the other depending on whether you are building loose or tight service abstraction layers.

By providing __________________ awareness of reusable services available for composition, the __________________ principle can greatly benefit the design of service- oriented solutions. Select the correct answer.

A. increased, Service Statelessness

B. decreased, Service Autonomy

C. decreased, Service Discoverability

D. None of the above.

Fill in the blanks for the following definition of the Service Discoverability design principle: "Services are supplemented with communicative metadata by which they can be effectively __________________ and __________________." Select the correct answer.

A. designed, discovered

B. discovered, interpreted

C. discovered, refactored

D. discovered, deployed

The Service Discoverability principle is supported by the Standardized Service Contract principle in which of the following ways? Select the correct answer.

A. The Standardized Service Contract principle advocates using naming conventions for ensuring that the functionality of services is consistently expressed. By making the service easier to understand, it becomes more discoverable.

B. The Standardized Service Contract principle supports a design process whereby the service contract is customized and created prior to the service logic. This allows service designers to shape the service contract content in such a manner that it can be effectively discovered.

C. The Standardized Service Contract principle requires the use of service contract design standards that can be created to establish conventions that are supportive of the Service Discoverability principle.

D. All of the above.

The definition of the Service Composability design principle is as follows: "Services are effective composition participants, regardless of the size and complexity of the composition." What is meant by "regardless of the size and complexity of the composition"? Select the correct answer.

A. It means that services need to be designed so that they can participate in different types of compositions, regardless of what type of composition they are initially delivered for.

B. It means that services need to be designed for a specific composition with a specific size and level of complexity, regardless of what other compositions may need to use the service for in the future.

C. It means that the composition must be large and complex, regardless of the size and complexity of the service itself. These two design aspects need to be kept separate so that service and composition can evolve independently.

D. The definition for the Service Composability principle does not include the statement "regardless of the size and complexity of the composition".

A service contract publishes information that makes guarantees about how the service will behave at runtime and when it will be available. These types of guarantees are associated with which service meta information type? Select the correct answer.

A. technology

B. programmatic

C. functional

D. quality of service

Which of the following characteristics directly supports or enables behavioral predictability within services? Select the correct answer.

A. availability (service downtime and periods of unavailability are minimized)

B. maintainability (the service is easily evolved over time without disrupting existing relationships with service consumers)

C. reliability (the service provides consistent results and performance)

D. All of the above.

Which of the following are runtime roles associated with service compositions? SELECT ALL THAT APPLY

A. composition controller

B. composition member

C. composition sequencer

D. composition sub-controller