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IBM Cloud Professional Developer v4 Questions and Answers

Question 1

A developer is instructed to use a circuit breaker pattern in a User Story, using a best effort approach. What should the developer do to deliver this request?

Options:

A.

Check the service status through an API call and throw an exception when the service is down

B.

Add a fallback method that returns null or an empty set as result when the service is down

C.

Add a fallback method that returns a cached copy of the data requested when the service is down

D.

Add a retry loop to keep trying the invocation when the service is down

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Question 2

A Mobile application developer is using IBM Mobile Foundation for the backend services. The application end users need access to the application data even when there is no network and the application is running offline. Which of the following IBM Mobile Foundation features will help in this scenario?

Options:

A.

JSONStore

B.

Mobile Foundation SDK

C.

AES 256 encryption and Data storage

D.

Mobile Foundation Adapters

Question 3

Why is separation of duty essential for cloud native application development?

Options:

A.

To ensure protection from malicious attacker

B.

To ensure users only have the access to the resources to perform their job

C.

To ensure that each microservice only performs one essential task

D.

To ensure protection from vulnerabilities