Cisco 300-910 Online Practice Questions and Exam Preparation

Cisco 300-910 Online Questions & Answers

• Question 91:

  Refer to the exhibit.

  

  Which action allows the development team to reach the deployed application?

  A. Create an init container to initialize routes for the containers in the pod
  B. Create a service to expose the logic running in the pod
  C. Delete the deployment and redeploy by using a ReplicaSet.
  D. Delete the deployment and redeploy by using the latest tag for the container image
  B. Create a service to expose the logic running in the pod

• Question 92:

  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"
  B. kubectl -n Cisco get pods | grep "Cisco-DB"

  ---

  The correct answer is B. kubectl -n Cisco get pods | grep "Cisco-DB". This command allows you to view the pods in the Cisco namespace and filter the list for the pod named "Cisco-DB". This will confirm that the pod is running and usable. References: Cisco Implementing DevOps Solutions and Practices using Cisco Platforms (DEVOPS) Study Manual, Chapter 6, Section 6.3: Kubernetes Commands, Page 113.

• Question 93:

  A CI/CD pipeline that builds infrastructure components using Terraform must be designed. A step in the pipeline is needed that checks for errors in any of the .tf files in the working directory. It also checks the existing state of the defined infrastructure.

  Which command does the pipeline run to accomplish this goal?

  A. terraform plan
  B. terraform check
  C. terraform fmt
  D. terraform validate
  A. terraform plan

  ---

  https://www.terraform.io/docs/cli/commands/validate.html "use the terraform plan command instead, which includes an implied validation check."

• Question 94:

  DRAG DROP

  A DevOps engineer is designing a precheck validation of the network state in a CI/CD pipeline and must implement this workflow:

  1. Take a source Docker image named alpine

  2. Define two stages named build and push

  3. Check network connectivity before the stages run ?Fetch the latest Docker image

  4. Create a new Docker image and push it to the registry

  5. Tag the new Docker image as the latest version

  Drag and drop the code snippets from the bottom onto the boxes in the GitLab CI configuration to achieve the requirements for the design. Not all options are used.

  Select and Place:

  

  

• Question 95:

  A company has experienced serious growth and the hosted applications are getting more and more hits. Based on the increased work load, applications have started to show signs of reduced performance, which is affecting the user experience.

  Which two server metrics should be tracked to ensure that the customer experience remains within acceptable limits? (Choose two.)

  A. application feature sprawl
  B. CPU peak usage
  C. CPU average usage
  D. microservices count
  E. CPU frequency
  B. CPU peak usage
  C. CPU average usage

• Question 96:

  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
  D. canary

  ---

  Explanation Explanation/Reference:

• Question 97:

  What is a practice of infrastructure as code?

  A. Use multiple version control systems
  B. Document as much as possible
  C. Configure the deployment consistently
  D. Test, integrate, and deploy once a day
  C. Configure the deployment consistently

• Question 98:

  Which step must be taken to enable centralized logging in a Kubernetes environment?

  A. No steps need to be taken. The master node automatically aggregates logs from all worker nodes and stores them on the specified persistent volume.
  B. Create a CustomResourceDefinition in each deployment that specifies the IP or names the log collector.
  C. Deploy a sidecar node that aggregates logs from the entire cluster.
  D. Create a DaemonSet that deploys a container with a logging agent on every node in the cluster.
  D. Create a DaemonSet that deploys a container with a logging agent on every node in the cluster.

  ---

  Explanation Explanation/Reference:To enable centralized logging in a Kubernetes environment, you must create a DaemonSet that deploys a container with a logging agent on every node in the cluster. This allows all of the logs from each node to be collected in one place, allowing for easier analysis and management. Reference: Kubernetes Documentation, Logging Architecture.

• Question 99:

  Which two characteristics of a build tool that is used in an automated build pipeline? (Choose two.)

  A. It runs unit tests against code that is committed.
  B. It builds your software on the production environment.
  C. It builds your software when changes are committed.
  D. It builds your software every 500 milliseconds.
  E. It must have a plug-in for Puppet and Maven.
  B. It builds your software on the production environment.
  C. It builds your software when changes are committed.

  ---

  The two characteristics of a build tool that is used in an automated build pipeline are A) it builds your software when changes are committed and B) it runs unit tests against code that is committed. Automated build tools are used to detect changes to source code and then build the software that resulted from the change. Additionally, these tools can be configured to run unit tests against the code to ensure that it works as expected.

• Question 100:

  DRAG DROP

  Drag and drop the code from the bottom onto the box where the code is missing to create a Terraform configuration that builds the network environment for a multitier software application. More EPG, Contract, and Filter definitions have been removed from the code.

  Select and Place: