Cisco 300-910 Online Practice Questions and Exam Preparation

Cisco 300-910 Online Questions & Answers

• Question 51:

  Refer to the exhibit.

  

  An organization has issues with code-based failures after implementing a CI/CD pipeline to automate the builds and deployment phases of an application.

  Which action must be added to the pipeline, after the application is deployed in the staging environment to minimize failures and to ensure a successful continuous deployment?

  A. Restructuring and monitoring tests must be run after it is promoted to production
  B. Restructuring and monitoring tests must be run before it is promoted to production
  C. Functional and nonfunctional tests must be run after it is promoted to production
  D. Functional and nonfunctional tests must be run before it is promoted to production
  D. Functional and nonfunctional tests must be run before it is promoted to production

  ---

  Explanation Explanation/Reference:According to Cisco's Implementing DevOps Solutions and Practices using Cisco Platforms (DEVOPS) Study Manual, it is important to run functional and non- functional tests before promoting the application to production. This is essential in order to identify and address any issues that could cause code-based failures. Additionally, a pipeline should include automated tests that can be used to verify that processes are running correctly. By running these tests before promoting to production, you can ensure that any potential issues are identified and addressed before the application is released.

• Question 52:

  Which Dockerfile produces an efficient image rebuild when the exposed port Python dependency, or MyApp source code is modified?

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  B. Option B

• Question 53:

  Which description of a canary deployment is true?

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

• Question 54:

  DRAG DROP

  A developer must create a GitLab CI/CD pipeline with these requirements:

  1. builds an on-demand test environment

  2. deploys configurations

  3. verifies the results

  Drag and drop the code from the bottom onto the box where the code is missing to complete the GitLab CI/CD pipeline. Not all options are used.

  Select and Place:

  

  

• Question 55:

  What are two advantages of using Configuration Management Tools? (Choose two.)

  A. reduction in policy violations caused by human errors
  B. reduction in administration costs
  C. reduction in network changes already performed automatically
  D. reduction of on-premises networking equipment
  E. reduction in networking team skills
  A. reduction in policy violations caused by human errors
  B. reduction in administration costs

  ---

  Explanation Explanation/Reference:Configuration Management Tools allow for automated configuration of networking equipment, which helps to reduce human errors and the time and money needed to manage and configure the equipment. For example, Cisco Configuration Professional (CCP) is a configuration management tool that provides automated configuration, validation, and troubleshooting of network infrastructure devices. CCP enables administrators to configure and deploy network changes quickly and efficiently, while also reducing the costs associated with manual configuration and troubleshooting.

• Question 56:

  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:

  1.

  A subset of the users of the original service must be migrated to the new service based on their profile

  2.

  The new service must be rolled back easily if capacity exceeds estimates

  Which deployment strategy must be used?

  A. rolling
  B. blue/green
  C. geolocation
  D. canary
  D. canary

• Question 57:

  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
  B. blue/green

  ---

  The new version of the application is deployed to one of the environments, and then traffic is gradually shifted to the updated environment. This strategy allows the team to test the new version before releasing it to the public, ensuring that it is operating as expected. After the new version is tested and approved, traffic is fully shifted to the new environment and the old environment is shut down.

• Question 58:

  Refer to the exhibit.

  

  The push_configs.yml playbook returns the error shown.

  Which action resolves the error?

  A. Install the Paramiko library on the host that runs Ansible
  B. Generate a new SSH key pair and add the public key to the target machine
  C. Export the ANSIBLE_HOST_KEY_CHECKING=False variable
  D. Comment out the StrictHostKeyChecking=yes line from ansible.cfg
  C. Export the ANSIBLE_HOST_KEY_CHECKING=False variable

• Question 59:

  DRAG DROP

  A developer is creating an application where each service uses a different operating system. The application components need to be isolated but must have the ability to communicate with each other.

  Drag and drop the entries from the left into the order on the right to create a Dockerfile that will accomplish this goal.

  Select and Place:

  

  

• Question 60:

  Refer to the exhibit.

  

  The text represents a syslog message sent from a Linux server to a centralized log system.

  Based on the format of the log message, how must the functionality of the log parser be extended to improve search capabilities?

  A. Reverse lookup the IP address to add a hostname field
  B. Convert the date to the time zone of the system
  C. Configure the Linux machine to add a UID field to messages
  D. Filter out the text of the message to speed up searches
  A. Reverse lookup the IP address to add a hostname field