Cisco Cisco Certified DevNet Associate 200-901 Questions & Answers

• Question 301:

  Before which process is code review performed when version control is used?

  A. checkout of code

  B. merge of code

  C. committing code

  D. branching code

  Correct Answer: B

  Good branching code is here: https://stackoverflow.com/questions/17839235/what-exactly-is-code-branching

• Question 302:

  Which two concepts describe test-driven development? (Choose two.)

  A. User acceptance testers develop the test requirements.

  B. It enables code refactoring.

  C. Tests are created when code is ready for release.

  D. Implementation is driven by incremental testing of release candidates.

  E. Write a test before writing code.

  Correct Answer: BE

  https://www.tutorialspoint.com/software_testing_dictionary/release_candidate.htm

• Question 303:

  Refer to the exhibits.

  

  A developer is troubleshooting an API with the given API documentation and cURL command. What is the cause of this problem?

  A. The authorization header is missing or incomplete.

  B. The request body is missing or incomplete.

  C. The API token specified is expired.

  D. The user is not allowed to post messages from their account.

  Correct Answer: A

  Not B because you would get a 400 error.

  Not C since the token in the page showed is always valid for 12h since last page refresh (so showing the page somehow implies the usage of a valid token). Not D since that would produce another type of error about insufficient priviledges

  for that user (but authorization to use the API would occur correctly), like a 403 forbidden or something similar.

• Question 304:

  What is the Git command to delete a local branch named "experiment" without a warning?

  A. git branch -rm experiment

  B. git branch -n experiment

  C. git branch -f experiment

  D. git branch -D experiment

  Correct Answer: D

  Reference: https://www.atlassian.com/git/tutorials/using-branches

• Question 305:

  An application calls a REST API and expects a result set of more than 550 records, but each time the call is made, only 25 are returned. Which feature limits the amount of data that is returned by the API?

  A. pagination

  B. payload limit

  C. service timeouts

  D. rate limiting

  Correct Answer: A

  https://developer.atlassian.com/server/confluence/pagination-in-the-rest-api/

• Question 306:

  Which detail is included in a routing table?

  A. broadcast address

  B. TCP or UDP port number

  C. IP protocol

  D. destination next hop or outgoing interface

  Correct Answer: D

  Reference: https://geek-university.com/ccna/routing-table-explained/

• Question 307:

  Which status code is used by a REST API to indicate that the submitted payload is incorrect?

  A. 400

  B. 403

  C. 405

  D. 429

  Correct Answer: A

  Reference: https://community.cisco.com/t5/application-centric/apic-rest-api-produces-inconsistent-response/td-p/2758230

• Question 308:

  What are two roles of an artifact repository in a CI/CD pipeline? (Choose two.)

  A. stores files needed and generated during the build process

  B. provides traceability, search, and management of binary files

  C. is required for CI/CD pipelines executed on a public cloud infrastructure

  D. allows for comparing and merging changes in the source code

  E. is required for managing open source software

  Correct Answer: AB

• Question 309:

  What are two advantages of the Model-View-Controller software design pattern? (Choose two.)

  A. allows for multiple views of the same model

  B. separates responsibilities of the code, which makes future modifications easier

  C. simplifies network automation

  D. makes code easier to deploy using CI/CD pipelines

  E. reduces need for error handling

  Correct Answer: AB

• Question 310:

  Refer to the exhibit.

  

  What does the Python function do?

  A. It returns HTTP Basic Authentication.

  B. It returns DNAC user and password.

  C. It reads a token from a local JSON file and posts the token to the DNAC URL.

  D. It returns an authorization token.

  Correct Answer: D

  import requests

  from requests.auth import HTTPBasicAuth

  def get_auth_token():

  url = 'https://sandboxdnac.cisco.com/dna/system/api/v1/auth/token'

  resp = requests.post(url, auth=HTTPBasicAuth("devnetuser", "Cisco123!"))

  token = resp.json()['Token']

  print(token)

  return token

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  Reference: https://community.cisco.com/t5/cisco-digital-network/how-can-i-make-this-script-to-run/td- p/3882782