Cisco 300-910 Online Practice Questions and Exam Preparation

Cisco 300-910 Online Questions & Answers

• Question 31:

  An application is being developed to be used by the HR department of a company on a global scale. The application will be used as a central repository for employee contracts. For user access, a RADIUS server will be used with authorized user groups.

  Which action must be used to prevent developers from accidentally committing secrets in the code?

  A. Add a unit test to block the secrets
  B. Add a precommit Git hook to block the secrets
  C. Add dast to the repository to block the secrets
  D. Add a job in the CI build to block the secrets
  A. Add a unit test to block the secrets

• Question 32:

  What is as responsibility for teams running private cloud servers that is less of a concern when running in the public cloud?

  A. cost
  B. metrics and monitoring
  C. hardware maintenance
  D. credentials management
  D. credentials management

  ---

  The responsibility of credentials management is less of a concern when running in the public cloud. This is because the public cloud provider typically manages the credentials and handles authentication and authorization for the cloud services. In a private cloud environment, the organization must manage the credentials themselves, as well as authentication and authorization for the cloud services. References: Cisco Implementing DevOps Solutions and Practices using Cisco Platforms (DEVOPS) Study Manual, Chapter 2, Section 2.1: Cloud Computing Models, Page 14-15.

• Question 33:

  An interface on a router as a Layer 3 link has been configured to another device by updating an Ansible playbook that is executed via a CI/CD pipeline. The Ansible playbook was written to push the configuration change using the ios_config module.

  Which automated test validates that the interface is functioning as it should?

  A. Add a pipeline step that runs the playbook a second type. If it does not modify the device on the second run, then the interface is correctly configured.
  B. Automated testing is already built in because the playbook execution is successful only after Ansible validates that it applied the change.
  C. Add a pipeline step that captures and parses the packet flow for the interface.
  D. Add a pipeline step that captures and parses the show ip interface output so that the operational state can be referenced.
  D. Add a pipeline step that captures and parses the show ip interface output so that the operational state can be referenced.

  ---

  Explanation Explanation/Reference:Adding a pipeline step that captures and parses the show ip interface output so that the operational state can be referenced is the best way to validate that the interface is functioning as it should. This can be done by using the ioscommand module to capture the output of the show ip interface command, and then using the iosparse module to parse the output and extract the relevant interface information. The ios_parse module allows you to validate the interface state, to ensure that it is up and running as expected. Cisco Implementing DevOps Solutions and Practices using Cisco Platforms (DEVOPS) Study Manual, Chapter 6, Section 6.3.6.

• Question 34:

  Refer to the exhibit.

  

  The exhibit shows the output of an Ansible task that prints the contents of the show_ip_int_brief variable that was registered in a different task in the playbook. Which expression is used to print the output of the command without its header row?

  A. show_ip_int_brief[`stdout_lines'][0]
  B. show_ip_int_brief[`stdout_lines'][1:]
  C. show_ip_int_brief[`stdout_lines'][0][1:]
  D. show_ip_int_brief[`stdout_lines']
  C. show_ip_int_brief[`stdout_lines'][0][1:]

  ---

  Explanation Explanation/Reference:show_ip_int_brief["~stdout_lines'][0][1:] stdout_lines - nested list, [0], first element of above nested list (extract of all header + interfaces, coma separated for individual elements), [1:] - 2nd, 3rd, 4th line of the above sub-list.

• Question 35:

  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
  D. active-active

  ---

  An active-active high-availability configuration is when the load balancer is used to distribute the load across the whole cluster of nodes that are running the same web service. In this configuration, all of the nodes are active and available to serve requests at any given time. This is in contrast to an active-passive configuration, where only one node is active and the other nodes are passive and serve as backups in case of a failure.

• Question 36:

  Refer to the exhibit.

  

  The snippet contains the JSON string that will be sent to the Prometheus AlertManager to silence an alert. AlertManager accepts only the content type of application 'json'' Which Python code correctly sends an API call to perform action?

  A. respone= request.post(url. json=json_data)
  B. respone= request.post(url. json=json.loads(json_data)
  C. respone= request.post(url. data=json_data)
  D. respone= request.post(url, data=json=(json_data)
  C. respone= request.post(url. data=json_data)

• Question 37:

  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?

  A. Store the access token with GitHub environment variables
  B. Store the access token with GitHub encrypted secrets
  C. Store the access token in an environment file in the repository
  D. Hard code the access token in the repository with Base64 encoding
  B. Store the access token with GitHub encrypted secrets

• Question 38:

  Refer to the exhibit.

  

  A Python script implements a logger server. The log receives a message from Base that contains this text: TextMessage. How is the log formatted?

  A. Base Alter: TextMessage
  B. Undefined: TextMessageBase
  C. TextMessage -> Base
  D. TextMessage -> Alter Base
  C. TextMessage -> Base

• Question 39:

  ConfigMap keys have been mapped to different file names using the volumes.configMap.items field. What is the result if a wrong ConfigMap key is specified?

  A. The default path is not used.
  B. The volume is not created.
  C. The volume is created.
  D. The volume is created with errors.
  B. The volume is not created.

  ---

  If a wrong ConfigMap key is specified, the volume will not be created since the ConfigMap key must match the name of the item specified in the volumes.configMap.items field.

• Question 40:

  An organization is developing an application using Git. Each team member is assigned to work on specific parts of the application. At the end of each task, individual code parts are merged in the main build.

  Which two requirements should be implemented to increase the likelihood of continuous integration? (Choose two.)

  A. Changes must be scheduled to deploy at a specific time that has minimal traffic
  B. Changes must include automated tests
  C. Changes must be validated during deployment to the production environment
  D. Smaller, individually testable changes must be merged first
  E. Team members must be responsible for the code committed by any team member
  B. Changes must include automated tests
  C. Changes must be validated during deployment to the production environment