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IBM Cloud Professional Developer v4 Questions and Answers

Question 1

What does the IBM Cloud Virtual Server Auto Scale feature provide?

Options:

A.

Configures security group permissions

B.

Seamless and automatic scaling up of instances when more resources are required due to demand

C.

Flexible scaling based on RAM usage

D.

Provisioning on-premise servers

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Question 2

A developer working on Red Hat OpenShift on IBM Cloud is tasked to monitor further application metrics using IBM Cloud Monitoring with Sysdig for the application in container called: my-java-app. How should the developer configure the Sysdig agent?

A)

B)

C)

D)

Options:

A.

Option A

B.

Option B

C.

Option C

D.

Option D

Question 3

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