Free 300-910 Sample Questions — Implementing DevOps Solutions and Practices using Cisco Platforms (DEVOPS)

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?

• A. recreate
• B. blue/green
• C. rolling
• D. canary

Which two elements help to secure your API keys? (Choose two.)

• A. ramdomness
• B. SHA1
• C. triple AES
• D. rotation
• E. dictionary

What is a benefit of monitoring the CI/CD pipeline?

• A. troubleshoots distributed systems performance
• B. proactively deploys new servers if needed
• C. analyzes network outages that affect the network and server infrastructure
• D. provides insight into how efficiently the development team is operating

A company has a CI/CD pipeline implemented to automate application deployment. An urgent change is required in the production environment. A developer produces and tests the required change in the company's environment, but the pipeline fails when pushed. Which action conforms to the rules of a CI/CD pipeline and enables the pipeline to pass?

• A. Remove the failing test
• B. Manually deploy the change into the production environment
• C. Use a backup pipeline
• D. Replicate the production environment in the pipeline before applying

A team must roll out updates on the production instance of an application. To avoid any service down time, the new version must be released alongside the old version. After the team ensures that the new version operates as it should, traffic will be redirected to the new version. Then the old version will be shut down. Which deployment strategy must be used?

• A. rolling
• B. blue/green
• C. shadow
• D. canary

A new banking application is being developed as the main currency exchange resource for all the customers on a global scale. The application must comply with the security based on the deployed region. Therefore, the CI/CD pipeline must be created with the highest security possible. Which approach accomplishes this goal?

• A. Give the accounts used in the CI/CD pipeline full administrative rights to all applications
• B. Use the same passwords across the entire CI/CD pipeline
• C. Ensure that secrets are not inadvertently passed on during builds for pull requests via CI/CD pipeline
• D. Never use one-time passwords in CI/CD pipeline

A DevOps engineer must validate the working state of the network before implementing a CI/CD pipeline model. Which configuration management tool is designed to accomplish this?

• A. Jenkins
• B. Genie CLI
• C. Travis CI
• D. Python YAML data libraries

A three-tier web application must be moved to containers. A webserver is already in place, and the middleware container can talk to a central database server. The hostname of the database server is known, but the name of the middleware server must be provided to the webserver. In which file should the name of the middleware server be configured?

• A. Docker Service discovery daemon
• B. Docker Swarm
• C. Docker Compose
• D. Dynamic Host Configuration Protocol

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

• A. maxing out CPU cores on an Elasticsearch duster
• B. removing all users from a version control system
• C. executing routine in driver code to emulate I/O errors
• D. blocking developers’ building access
• E. unplugging a core switch device

A team is developing an application for end users. The application will use microservices. For user access dual-factor authentication will be used. Which type of test must be performed by the CI/CD tool to replicate user behavior and to verify that various user actions work as expected?

• A. unit
• B. end-to-end
• C. A/B
• D. sanity

A user wants to deploy a new service to a Kubernetes cluster. Which two commands accomplish this goal? (Choose two.)

• A. Apply
• B. Install
• C. Deploy
• D. Create
• E. Expose

A development team uses Kubernetes for application development. Any changes on ConfigMap are performed manually for each development, test, and production environment. The edits are performed to deploy applications. This approach causes inconsistent deployments across all environments. Which practice improves the consistency of the deployments?

• A. Implement environment variables within the ConfigMaps and store the variable definitions separately from the master branch where the ConfigMaps are stored
• B. Generate the ConfigMaps specific to the environment by using a templating language such as Jinja2 and store the ConfigMaps in unique branches of a repository
• C. In the master branch where the ConfigMaps are stored, create a branch for each environment that contains an environment-specific ConfigMap
• D. Create a unique repository for each environment that contains ConfigMaps for that environment to ensure that each environment can be deployed independently

What is the impact of using the Drone.io CI/CD tool on the local installation step?

• A. slows down the development
• B. delays the deployment of components
• C. speeds up the procedure
• D. complicates the application process

A developer has created a deployment that should launch a pod to run their database service. The pod should launch with a metadata name of "Cisco-DB," and the developer has added it to the "Cisco" namespace in their deployment. Which Kubernetes command confirms that the service is running and usable?

• A. kubectl -n Cisco get services | grep "Cisco-DB"
• B. kubectl -n Cisco get pods | grep "Cisco-DB"
• C. kubectl get pods | grep "Cisco-DB"
• D. kubectl -n Cisco get service | grep "Cisco-DB"

A developer wants to deploy a highly available web server cluster and decides to put a load balancer in front of multiple clustered nodes that run the same web service. The goal is for the load balancer to take in users and distribute the load across the whole cluster. What kind of high-availability configuration is the developer running?

• A. active
• B. passive
• C. active-passive
• D. active-active