Free Implementing DevOps Solutions and Practices using Cisco Platforms Exam 300-910 Exam Practice Test

What are two testing scenarios of the chaos engineering principle? (Choose two.)

• maxing out CPU cores on an Elasticsearch cluster
• removing all users from a version control system
• executing routine in driver code to emulate I/O errors
• blocking developers' building access
• unplugging a core switch device

A DevOps engineer must build a Docker image to containerize an application. Then the image must be pushed to a repository on Docker Hub in a CI/CD pipeline using GitHub Actions.Which approach securely encrypts the Docker Hub access token as an environment variable within the CI/CD pipeline?

• Store the access token with GitHub environment variables
• Store the access token with GitHub encrypted secrets
• Store the access token in an environment file in the repository
• Hard code the access token in the repository with Base64 encoding

An IT team plans to deploy a new service built on top of an existing service. The capacity needed for the new service is difficult to estimate because the demand for the new service is undetermined. The team has these deployment requirements:* A subset of the users of the original service must be migrated to the new service based on their profile* The new service must be rolled back easily if capacity exceeds estimatesWhich deployment strategy must be used?

• rolling
• blue/green
• geolocation
• canary

What is the purpose of using a build tool in software development?

• It complies source code into binaries and executables.
• It provides a way to edit source code using a graphical interface.
• It is a manual process that is followed to build software.
• It tracks bugs and incidents in a built application.

Which type of security testing should be performed as a part of a CI/CD pipeline by analyzing the source code itself without compiling the code into a running executable?

• Dynamic Application Security Testing
• Runtime Application Health-Protection
• Continuous Application Security Testing
• Static Analysis Security Testing

An IT department needs to deploy a new application named 'Entfin434772390' across the entire enterprise. The deployment must gradually transfer user traffic from an on older and nearly identical version of the application named 'Entfin02754932l'. Both versions of the application are running in the production environment.Which release strategy should be used by the IT department?

• agile
• canary
• rollbacks
• blue/green

A precheck validation is being designed for the network state in a Cl/CD pipeline This design requires:* the CI/CD pipeline to spin up test instances.* instances must be used to validate changes.* changes must be validated prior to a continuous deployment workflow, and* then push the changes to productionHow should the pipeline target the required environment?

• Use separate CI servers for each environment
• Use different pipelines for each environment
• Use separate Git repositories for each environment
• Use different inventory files for each environment

What is the purpose of using sysprep when developing a Microsoft Windows-based golden image process?

• prepares a new host to accept a hard drive image built on another machine
• removes all host-specific information and components from the local machine
• installs all the latest security patches and OS updates to the local machine
• writes the local hard drive image to an ISO file that can be deployed to another machine

When static routes are added to a router in a network using a CI/CD pipeline, an Ansible playbook is used to make these changes. Which steps must be added to the pipeline to validate that the changes have the intended effect on the traffic flow?

• Add a step to run the debug ip routing command before the change, and add a step after the change to issue the no debug ip routing command.
• Add a step to capture the routing table before the change, and add a step after the change to capture it again. Calculate the difference between the two for review.
• Add a step to ping a host on each of the static routes before the change, and a step after to repeat the same check. Calculate the difference between the two checks for review.
• Add a step to run the same playbook again with the debug option enabled and use grep on the log output to ensure that the commands are not applied again.

Configuration changes to the production network devices are performed by a CI/CD pipeline. The code repository and the CI tool are running on separate servers. Some configuration changes are pushed to the code repository, but the pipeline did not start.Why did the pipeline fail to start?

• The CI server was not configured as a Git remote for the repository.
• The webhook call from the code repository did not reach the CI server.
• Configuration changes must be sent to the pipeline, which then updates the repository.
• The pipeline must be started manually after the code repository is updated.