Cisco Cisco Certified DevNet Associate 200-901 Questions & Answers

• Question 281:

  Which mechanism is used to consume a RESTful API design when large amounts of data are returned?

  A. data sets

  B. scrolling

  C. pagination

  D. blobs

  Correct Answer: C

  Reference: https://nordicapis.com/everything-you-need-to-know-about-api-pagination/

• Question 282:

  Which type of threat occurs when an attacker can send hostile data to an interpreter within an application?

  A. sensitive data exposure

  B. broken authentication

  C. cross-site scripting

  D. injection

  Correct Answer: D

  Reference: https://owasp.org/www-project-top-ten/OWASP_Top_Ten_2017/Top_10-2017_A1-Injection

• Question 283:

  Which of following advantages of version control software? (Choose two.)

  A. It provides wiki collaboration software for documentation.

  B. It supports comparisons between revisions of source code files.

  C. It allows new team members to access the current code and history.

  D. It supports tracking and comparison of changes in binary format files.

  Correct Answer: BC

• Question 284:

  What are the two purposes for using a VLAN in a network? (Choose two)

  A. It is used to create the routing table.

  B. It creates a collection of MAC addresses.

  C. It is used for VM network traffic.

  D. It segments a network.

  E. It creates a broadcast domain.

  Correct Answer: DE

• Question 285:

  Which response status code is used by a RESTful interface to indicate successful execution of a request?

  A. 200

  B. 404

  C. 405

  D. 500

  Correct Answer: A

• Question 286:

  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 287:

  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 288:

  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 289:

  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 290:

  Refer to the exhibit.

  

  What is the action of the Bash script that is shown?

  A. For all directories in the current folder, the script goes into the directory and makes a new directory.

  B. The script waits until input is entered. If the directory exists, the script goes into it until there is no directory with the same name, then it creates a new directory.

  C. The script waits until input is entered, then it goes into the directory entered and creates a new directory with the same name.

  D. The script goes into the directory called "$ndir" and makes a new directory called "$ndir".

  Correct Answer: B