Cisco Cisco Certified DevNet Associate 200-901 Questions & Answers

• Question 1:

  When using the Bash shell, how is the output of the devnet command saved to a file named "output.txt"?

  A. devnet > output.txt

  B. devnet | output.txt

  C. devnet < output.txt

  D. devnet and output.txt

  Correct Answer: A

  Reference: https://askubuntu.com/questions/420981/how-do-i-save-terminal-output-to-a-file

• Question 2:

  Which two encoding formats do YANG interfaces support? (Choose two.)

  A. XML

  B. JSON

  C. XHTML

  D. BER

  E. plain text

  Correct Answer: AB

  Reference: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/prog/configuration/171/ b_171_programmability_cg/model_driven_telemetry.html

• Question 3:

  Which two statements describe the traits of an asynchronous API call? (Choose two.)

  A. Code execution blocks or waits for the call to an API to return.

  B. A callback function typically is used to process the response from an API call.

  C. A call to an API does not block the code, but rather it allows application processing to continue.

  D. The end user can experience latency or performance lag while waiting for the API call to return.

  E. The order in which API calls return can be guaranteed.

  Correct Answer: BC

  Reference: https://medium.com/codebuddies/getting-to-know-asynchronous-javascript-callbacks-promises- and-async-await-17e0673281ee

• Question 4:

  Refer to the exhibit.

  

  Given the API documentation for the UCS SDK Python class, UcsHandle, which code snippet creates a handle instance?

  

  A. Option A

  B. Option B

  C. Option C

  D. Option D

  Correct Answer: B

  Reference: https://www.ciscolive.com/c/dam/r/ciscolive/us/docs/2016/pdf/LTRINI%202020-LG.pdf

• Question 5:

  Which action resolves a 401 error in response to an HTTP GET that is issued to retrieve a configuration statement using RESTCONF on a CSR 1000V?

  A. Change the HTTP method to PUT.

  B. Check the MIME types in the HTTP headers.

  C. Change the transport protocol to HTTPS.

  D. Check the authentication credentials.

  Correct Answer: D

  The 401 (Unauthorized) status code indicates that the request has not been applied because it lacks valid authentication credentials for the target resource.

• Question 6:

  An automation script fails to connect to an internal server exactly 1 out of 2 times it is executed. This behavior is seen from different clients. Which networking device must be at fault?

  A. load balancer

  B. laptop on which the script is running

  C. switch

  D. router

  Correct Answer: A

• Question 7:

  Which task is performed because the test-driven development approach is being used?

  A. creating test scenarios based on continuous development

  B. writing code without committing any coding violations

  C. refactoring code that is covered by existing tests

  D. testing existing software before developing new code

  Correct Answer: C

  "The idea is that you build a test case first, before any software has been created or modified"

  but "testing existing software before developing new code" is the idea or goal, not the task

  five steps of TDD: -Write a test -Test fails -Write some code -Test passes -Refactor

  Reference: https://www.guru99.com/test-driven-development.html

• Question 8:

  Which two items are Cisco DevNet resources? (Choose two.)

  A. TAC Support

  B. Software Research

  C. API Documentation

  D. Bitbucket

  E. Sandbox

  Correct Answer: CE

  Reference: https://developer.cisco.com/

• Question 9:

  Which platform has an API that can be used to obtain a list of vulnerable software on user devices?

  A. Cisco Umbrella

  B. Cisco Firepower

  C. Cisco Identity Services Engine

  D. Cisco Advanced Malware Protection

  Correct Answer: D

• Question 10:

  Which type of HTTP method is used by the Meraki and Webex Teams APIs to send webhook notifications?

  A. HTTP POST

  B. HTTP GET

  C. HTTP HEAD

  D. HTTP PUT

  Correct Answer: A

  Reference: https://meraki.cisco.com/blog/tag/alerts/