Cisco Cisco Certified DevNet Associate 200-901 Questions & Answers

• Question 501:

  After a project is migrated to a new codebase, the "old_project" directory must be deleted. This directory has multiple read-only flies, and it must be deleted recursively without prompting for confirmation. Which Bash command must be used?

  A. rmdir -p old_project

  B. rm -rf old_project

  C. rm -r old_project

  D. rmdir old_project

  Correct Answer: B

• Question 502:

  What is the function of an IP address in networking?

  A. represents a network connection on specific devices

  B. specifies the type of traffic that is allowed to roam on a network

  C. specifies resource's location and the mechanism to retrieve it

  D. represents the unique ID that is assigned to one host on a network

  Correct Answer: D

• Question 503:

  How does a developer create and switch to a new branch called "my-bug-fix" to develop a product fix?

  A. git checkout -b my-bug-fix

  B. git branch -b my-bug-fix

  C. git branch my-bug-fix

  D. git checkout my-bug-fix

  Correct Answer: A

  git checkout [-b] (branchname or commit)

  The -b argument is useful for combining the git branch command with the checkout function and saves a bit of typing by creating the branch and checking it out (switching to it) all at the same time.

  Reference: https://www.dnnsoftware.com/community-blog/cid/155105

• Question 504:

  What operation is performed with YANG model-driven programmability in NX-OS?

  A. configure a device with native and OpenConfig-based models

  B. bootstrap a device that has a factory-default configuration

  C. send CLI commands to a device and retrieve output in JSON format

  D. run Linux commands natively on the device

  Correct Answer: A

  Reference: https://www.cisco.com/c/en/us/products/collateral/switches/nexus-9000-series-switches/white-paper-c11-741518.html

• Question 505:

  What is the purpose of a firewall in application deployment?

  A. adds TLS support to an application that does not support it natively

  B. limits traffic to only ports required by the application

  C. provides translation for an application's hostname to its IP address

  D. forwards traffic to a pool of instances of the application

  Correct Answer: B

• Question 506:

  A small company has 5 servers and 50 clients. What are two reasons an engineer should split this network into separate client and server subnets? (Choose two.)

  A. Subnets will split domains to limit failures.

  B. A router will limit the traffic types between the clients and servers.

  C. Subnets provide more IP address space for clients and servers.

  D. A router will bridge the traffic between clients and servers.

  E. Internet access to the servers will be denied on the router.

  Correct Answer: AC

  Splitting a network into separate client and server subnets can have several benefits. One reason to do so is to use a router to limit the types of traffic that can flow between the clients and servers. This can help to improve network security by restricting access to certain types of resources or services. Additionally, subnets can provide more IP address space for clients and servers, which can be particularly useful in larger networks where there may be a limited number of available IP addresses.

• Question 507:

  A 401 HTTP response code is returned when calling a REST API. What is the error state identified by this response code?

  A. The server cannot process the request as it has detected an issue in the request syntax or body.

  B. The request has not been accepted because it requires authentication.

  C. The sever accepted the request but the client is not authorized for this content.

  D. The server cannot find the requested resource because the path specified is incorrect.

  Correct Answer: B

  Reference: https://blog.restcase.com/rest-api-error-codes-101/#:~:text=A%20401%20error%20response%20indicates,credentials%20or%20none%20at%20all.

• Question 508:

  What is the first development task in test-driven development?

  A. Write code that implements a desired function.

  B. Write a failing test case for a desired function.

  C. Reverse engineer the code for a desired function.

  D. Write a passing test case for existing code.

  Correct Answer: B

  Reference: https://technologyconversations.com/2013/12/20/test-driven-development-tdd-example- walkthrough/

• Question 509:

  What is an advantage of a version control system?

  A. facilitates resolving conflicts when merging code

  B. ensures that unit tests are written

  C. prevents over-writing code or configuration files

  D. forces the practice of trunk-based development

  Correct Answer: A

• Question 510:

  Refer to the exhibit.

  

  What is the result of executing this Ansible playbook?

  A. The playbook copies a new start-up configuration to CISCO_ROUTER_01

  B. The playbook copies a new running configuration to CISCO_ROUTER_01

  C. The playbook backs up the running configuration of CISCO_ROUTER_01

  D. The playbook backs up the start-up configuration of CISCO_ROUTER_01

  Correct Answer: C