S90.03 Online Practice Questions and Answers

Fill the blank for the following definition of the Service Statelessness design principle:

"Services minimize resource consumption by __________________ the management of state information

when necessary." Select the correct answer.

A. increasing

B. encapsulating

C. deferring

D. assuming

Fill in the blank for the following definition of the Service Reusability design principle:

"Services contain and express __________________ logic and can be positioned as reusable enterprise

resources." Select the correct answer.

A. non-agnostic

B. agnostic

C. distinct

D. new

Which of the following statements is true? Select the correct answer.

A. A composition initiator must exist as a service.

B. A composition initiator can be any type of program capable of invoking a service and therefore does not need to be service-oriented.

C. A composition initiator is often associated with the intermediary role.

D. None of the above statements are true.

Project Team A delivered 3 services and a month later Project Team B delivered 5 services. After an audit of the services delivered by these two project teams, it was determined that 3 of the services delivered by Project Team B contained redundant logic that already resides in 2 of the services originally delivered by Project Team A. The audit results are negative because it is considered undesirable to have redundant logic among services. Which service-orientation principle could have been applied to help avoid this result? Select the correct answer.

A. Service Statelessness

B. Service Reusability

C. Standardized Service Contract

D. Service Abstraction

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.

Which of the following is not a negative coupling type? Select the correct answer.

A. Contract-to-Technology

B. Contract-to-Logic

C. Contract-to-Implementation

D. Consumer-to-Contract

Common problems associated with silo-based application design include: SELECT ALL THAT APPLY

A. It can result in a significant amount of waste due to the fact that silo-based applications can have significant redundant functionality.

B. It can result in bloated, oversized technical environments.

C. The integration effort required to make disparate silo-based applications interoperate can be complex and expensive.

D. IT operational costs can continue to escalate as more silo-based applications are added to an IT enterprise.

Which of the following does not represent a typical form of service contract standardization addressed by the Standardized Service Contract principle? Select the correct answer.

A. the standardization of a service's functional expression

B. the standardization of industry technologies across different service inventories

C. the standardization of data models used by service contracts

D. All of the above represent typical forms of standardization addressed by the Standardized Service Contract principle.

As a first step toward replacing a corporate customer database, a company attempts to limit access to customer services via an official Customer entity service. However, some time later it is discovered that several applications have been bypassing the Customer service in order to directly access the customer database. As a result, these applications exhibit which negative form of coupling? Select the correct answer.

A. Contract-to-Implementation

B. Consumer-to-Implementation

C. Consumer-to-Contract

D. Contract-to-Technology

Which of the following statements does not make sense? Select the correct answer.

A. By applying the Standardized Service Contract principle, the amount of data model transformation logic required by my solution has been reduced.

B. Since the design standards created in support of the Standardized Service Contract principle have been more widely enforced, I've noticed the same data models being shared by more services.

C. It is thanks to the Standardized Service Contract principle that we have been able to better isolate our services so as to reduce their dependency on shared databases.

D. All of these statements make sense.