300-910: Implementing DevOps Solutions and Practices using Cisco Platforms (DEVOPS)

Which type of testing should be integrated into a CI/CD pipeline to ensure the correct behavior of all of the modules in the source code that were developed using TDD?

soak testing
unit testing
load testing
volume testing

Correct answer: B

Refer to the exhibit.

How should the Jenkins job be troubleshooted based on the error provided?

Verify what the responding file created.
Update pip.
Install dependencies.
Place the code in a container and run the job again.

Correct answer: A

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.

Correct answer: B

Explanation:

A webhook is basically a callback URL that is triggered when certain events occur, such as a code commit. If the webhook call from the code repository does not reach the CI server, then the pipeline will not start. According to the Cisco Implementing DevOps Solutions and Practices using Cisco Platforms (DEVOPS) Study Manual, "A webhook is a web-based feature that enables a remote service to communicate with a local service, usually through a web server. Webhooks are used to trigger an action when a specific event occurs, usually in a remote service or application."

A webhook is basically a callback URL that is triggered when certain events occur, such as a code commit. If the webhook call from the code repository does not reach the CI server, then the pipeline will not start. According to the Cisco Implementing DevOps Solutions and Practices using Cisco Platforms (DEVOPS) Study Manual, "A webhook is a web-based feature that enables a remote service to communicate with a local service, usually through a web server.

Webhooks are used to trigger an action when a specific event occurs, usually in a remote service or application."

A new version of an application is being released by creating a separate instance of the application that is running the new code. Only a small portion of the user base will be directed to the new instance until that version has been proven stable. Which deployment strategy is this example of?

recreate
blue/green
rolling
canary

Correct answer: D

Which description of a canary deployment is true?

deployment by accident
deployment that is rolled back automatically after a configurable amount of minutes
deployment relating to data mining development
deployment to a limited set of servers or users

Correct answer: D

Refer to the exhibit.

What is causing the requests code to fail?

Rython3 is not compatible with requests.
The requests library is not imported.
The requests library is not installed.
The requests coming into stdin fail because device_ip cannot be parsed.

Correct answer: B

A DevOps engineering wants to build an application implementation based on the CI/CD pipeline model. Which service should be used to provide hosted continuous service for open and private projects?

Ansible
pyATS
Genie CLI
Travis CI

Correct answer: D

A DevOps engineer has built a new container and must open port 8080 for intercontainer communication. Which command must be added in a Dockerfile to accomplish this goal?

EXPOSE 8080
FIREWALL ADD-PORT 8080
PORT 8080
OPEN PORT 8080

Correct answer: A

Which two actions help limit the attack surface of your Docker container? (Choose two.)

Run only a single service in each container.
Run all services in a single image.
Use version tags for base images and dependencies.
Use Kali Linux as a base image.
Download images over HTTPS supporting sites.

Correct answer: AC

Explanation:

Running only a single service in each container and using version tags for base images and dependencies helps limit the attack surface of your Docker container. This ensures that only the necessary services are running and that you always have the latest versions of the base images and their dependencies, reducing the risk of malicious code being included in the container image.Reference: Docker Documentation, Security Best Practices.

Running only a single service in each container and using version tags for base images and dependencies helps limit the attack surface of your Docker container. This ensures that only the necessary services are running and that you always have the latest versions of the base images and their dependencies, reducing the risk of malicious code being included in the container image.

Reference: Docker Documentation, Security Best Practices.

A DevOps engineer has built a container to host a web-server and it must run as an executable.

Which command must be configured in a Dockerfile to accomplish this goal?

ENTRYPOINT <usr/sbin/apache2ctl>
ENTRYPOINT ["/usr/sbin/apache2ctl", "-D", "FOREGROUND"]
ENTRYPOINT ["BACKGROUND", "-D", "/usr/sbin/apache2ctl"]
ENTRYPOINT {usr/sbin/apache2ctl}

Correct answer: B

Which Docker command is used to start an interactive Bash shell in a running container named "test"?

docker attach -it test /bin/bash
docker run -it test /bin/bash
docker exec -it test /bin/bash
docker run test /bin/bash

Correct answer: C

Vendor:	Cisco
Exam Code:	300-910
Exam Name:	Implementing DevOps Solutions and Practices using Cisco Platforms (DEVOPS)
Date:	Apr 22, 2025
File Size:	6 MB

Download Implementing DevOps Solutions and Practices using Cisco Platforms (DEVOPS).300-910.VCEplus.2025-04-22.105q.vcex

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