Cisco Cisco Certified DevNet Associate 200-901 Questions & Answers

• Question 221:

  A company wants to automate the orders processed on its website using API. The network device that supports the solution must:

  1.

  support XML encoding

  2.

  support distributed transactions

  3.

  support YANG data models

  4.

  be support software redundancy

  Which requirement prevents the use of RESTCONF for the solution?

  A. software redundancy

  B. YANG data models

  C. distributed transactions

  D. XML encoding

  Correct Answer: C

  https://www.claise.be/netconf-versus-restconf-capabilitity-comparisons-for-data-model-driven-management-2/

• Question 222:

  Developer is working on a new feature and made changes on a branch named `branch-413667549a-new'. When merging the branch to production, conflicts occurred. Which Git command must the developer use to recreate the pre-merge state?

  A. git merge -no-edit

  B. git merge -commit

  C. git merge -revert

  D. git merge -abort

  Correct Answer: D

  https://www.git-tower.com/learn/git/ebook/en/command-line/advanced-topics/merge-conflicts

• Question 223:

  Refer to the exhibit.

  A collaboration engineer has developed a script to automate the gathering of information by providing the email address of the individual. When the engineer tests the script, a 401 error is received. Which command fixes the script?

  

  A. Add "Authorization": "Bearer " to the headers.

  B. Add "Authentication": "Basic " in the base_url after "https://".

  C. Add ":@" in the base_url after "https://".

  D. Add "Authentication": "Bearer " to the headers.

  Correct Answer: A

• Question 224:

  What is a comparison of YAML and JSON?

  A. YAML has a more consistent approach to representing data compared to JSON.

  B. JSON does not support comments and YAML does.

  C. YAML is a more verbose data structure compared to JSON.

  D. JSON has more common usage in configuration management tools compared to YAML.

  Correct Answer: B

  Can I use comments in JSON? No, JSON is a data-only format. Comments in the form //, #, or /* */, which are used in popular programming languages, are not allowed in JSON. You can add comments to JSON as custom JSON elements that will hold your comments, but these elements will still be data.

  Reference: https://stackoverflow.com/questions/244777/can-comments-be-used-in-json

• Question 225:

  What is a benefit of version control?

  A. prevents two users from working on the same file

  B. keeps track of all changes to the files

  C. prevents the sharing of files

  D. keeps the list of data types used in the files

  Correct Answer: B

  https://www.atlassian.com/git/tutorials/what-is-version-control#:~:text=non%2Dsoftware%20projects.-,Benefits%20of%20version%20control%20systems,scales%20to%20include%20more%20developers.

• Question 226:

  Refer to the exhibit. Which XML snippet has interface information that conforms to the YANG model?

  

  

  A. Option A

  B. Option B

  C. Option C

  D. Option D

  Correct Answer: A

• Question 227:

  Which protocol runs over TCP port 23?

  A. SSH

  B. NETCONF

  C. HTTP

  D. Telnet

  Correct Answer: D

• Question 228:

  What are two properties of private IP addresses? (Choose two.)

  A. They can be used to access the Internet directly.

  B. They are more secure than public IP addresses.

  C. They are not globally unique.

  D. They can be repeated within the same local network.

  E. They are controlled globally by an IP address registry.

  Correct Answer: BC

  B = Private addresses cannot be accessed directly from the Internet since they are behind a NAT'd device. C = Private subnets can be used anywhere privately behind a NAT'd device.

• Question 229:

  Refer to the exhibit. What does the command marked (2) do when it is run?

  

  A. It duplicates the "test" branch.

  B. It deletes the "test" branch only if a new branch is created.

  C. It deletes the "test" branch.

  D. It does not delete the branch until it is merged.

  Correct Answer: C

• Question 230:

  Which Cisco product provides malware and content filtering through DNS?

  A. Cisco ASA Firepower module

  B. Cisco AMP

  C. Cisco ISE

  D. Cisco Umbrella

  Correct Answer: D