Cisco 200-901 Online Practice Questions and Exam Preparation

Cisco 200-901 Online Questions & Answers

• Question 121:

  Which command reverses the last commit without changing the index file or the working tree position?

  A. git revert HEAD
  B. git reset --hard HEAD~3
  C. git reset --soft HEAD^
  D. git revert
  C. git reset --soft HEAD^

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  The command git reset --soft HEAD^ reverses the last commit but keeps the changes staged in the index file (staging area) and working directory. Here's what the command does: git reset --soft: Moves the HEAD pointer to the specified commit (in this case, the parent of the current commit, denoted by HEAD^) but leaves the changes from the reset commit in the staging area. HEAD^: Refers to the parent commit of the current HEAD. This command is useful when you want to uncommit the last commit but keep the changes for further modification or recommit them. References: Git Documentation - git reset Cisco DevNet Associate Certification Guide

• Question 122:

  FILL BLANK

  Refer to the exhibit.

  

  Fill in the blank to complete the query parameter and value so that the result set is returned in reverse chronological order (most recent first) based on when messages were entered. HTTP GET /v1/rooms ________________

  

  A. Check the answer in explanation.
  A. Check the answer in explanation.

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  Explanation/Reference:

  ?sortBy=lastactivity

  

  https://webexapis.com/v1/rooms?sortBy=lastactivity

• Question 123:

  What is used in Layer 2 switches to direct packet transmission to the intended recipient?

  A. MAC address
  B. IPv6 address
  C. spanning tree D. IPv4 address
  A. MAC address

• Question 124:

  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
  D. git branch -D experiment

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

• Question 125:

  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.
  B. It enables code refactoring.
  E. Write a test before writing code.

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

• Question 126:

  Refer to the exhibit.

  

  An administrator attempts to perform a GET using the Cisco IOS XE RESTCONF API to return the hostname of a device. The sequence diagram illustrates the HTTP messages observed. Which change to the API request resolves the issue?

  A. Remove the -H `Accept: application/yang-data+json' HTTP header because it is not required.
  B. Add -u cisco:cisco' in the end of the cURL command
  C. Change the request method from -X "GET" to -X "POST"
  D. Add Content-Type HTTP header with `application/yang-data+json' using -H `Content-Type: application/yang-data+json'
  B. Add -u cisco:cisco' in the end of the cURL command

• Question 127:

  How does a synchronous API request differ from an asynchronous API request?

  A. clients receive responses with a task id for further processing
  B. clients subscribe to a webhook for operation results
  C. clients are able to access the results immediately
  D. clients poll for the status of the execution of operations
  C. clients are able to access the results immediately

• Question 128:

  What is a capability of the NETCONF protocol?

  A. allows Python scripts to be executed externally from a network device
  B. uses JSON to encode data in its content layer
  C. allows XML messages to be exchanged via the SSH protocol
  D. exposes a web-based interface
  C. allows XML messages to be exchanged via the SSH protocol

• Question 129:

  DRAG DROP

  An engineer must make changes on a network device through the management platform API. The engineer prepares a script to send the request and analyze the response, check headers, and read the body according to information inside response headers. Drag and drop the HTTP header values from the left onto the elements of an HTTP response on the right.

  Select and Place:

  

  

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  Explanation/Reference:

• Question 130:

  DRAG DROP

  Drag and drop the characteristics from the left onto the corresponding software development methodologies on the right?

  Select and Place:

  

  

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  Explanation/Reference: