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?

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

What would a developer write to manage the lifecycle of an application in an IBM Cloud OpenShift cluster?

A. An operator

B. A private registry

C. A junction

D. A docker instance

Which two of the following are exposed to leverage IBM DB2 Warehouse on Cloud through REST?

A. Database management API

B. Database Data Access API

C. Database monitoring API

D. Database Programming API

E. Database resource scaling API

Which of the following statements is correct regarding Sysdig's metric collection for IBM Cloud Kubernetes Service?

A. It collects metrics only related to worker node CPU and worker node memory usage

B. It automatically collects IBM Cloud Pak licensing metrics

C. It can collect HTTP traffic into and out of containers

D. It can't collect custom application metrics

In the Ops part of DevOps practices, one key practice is Service Management and Operations. A team is deploying a new version of an application and. after a bad history of recurring fails in production, wants to implement practices to avoid recurring problems. What IBM Garage practice can be used by the team to achieve its goal?

A. The team can implement tools to identify, correlate and analyze events and alerts

B. The team can implement 5 Hows approach to analyze each fail

C. The team can implement collaboration tools to unify the team in problem resolution

D. The team can implement health check APIs to monitor applications services