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Certification Exams with Helpful Questions And Answers

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

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

Question 3

What is an option for a developer tasked to create APIs for a business service using the API Gateway on IBM Cloud?

Options:

A.

Submitting a WAR/JAR file to a static analysis tool to autocreate APIs based on business logic

B.

Importing APIs using Swagger/OpenAPI definitions stored on .json. .yml and .yaml files

C.

Creating Kubernetes services resources that will automatically create API for each Service resource on API Connect

D.

Importing APIs stored in .zip files