Cisco Cisco Certified DevNet Associate 200-901 Questions & Answers

• Question 141:

  A file in a local Git repository has been updated and issued the git add . command. The git diff command has been run to compare the changes to the previous commit, but nothing shows. Which action identifies the problem?

  A. Run the git add . command again in the correct subdirectory to ensure changes added to the staging area.

  B. Run the git commit command before the differences are compared to receive the end state of the code.

  C. Run the git status command to see the differences between current and previous code review stages.

  D. Run the git diff --staged command to compare the code added to the staging area.

  Correct Answer: D

  From both of these resourses I can conclude that:

  "git diff [] [--] [...]

  This form is to view the changes you made relative to the index (staging area for the next commit). In other words, the differences are what you could tell Git to further add to the index but you still haven't. You can stage these changes by

  using git-add[1]."

  "git diff [] --cached [--merge-base] [] [--] [...]

  This form is to view the changes you staged for the next commit relative to the named . Typically you would want comparison with the latest commit, so if you do not give , it defaults to HEAD. If HEAD does not exist (e.g.

  unborn branches) and is not given, it shows all staged changes. --staged is a synonym of --cached."

  https://git-scm.com/docs/git-diff

• Question 142:

  Which function does a router provide to a network?

  A. broadcast domain segmentation

  B. unique host on a Layer 3 network

  C. unique hardware address for every node on a LAN

  D. broadcast domain extension

  Correct Answer: A

• Question 143:

  To which stage of development do Infrastructure as Code principles relate?

  A. manual configuration

  B. service provisioning

  C. physical deployment

  D. requirement collection

  Correct Answer: B

• Question 144:

  Refer to the exhibit.

  

  An engineer must authorize a REST API call. The API password is "Cisco123!". Which Bash command must be placed in the code to authorize the call?

  A. mkdir API_PASSWORD=Cisco123!

  B. set API_PASSWORD=Cisco123!

  C. cp API_PASSWORD=Cisco123!

  D. export API_PASSWORD=Cisco123!

  Correct Answer: D

• Question 145:

  Refer to the exhibit.

  

  A developer must use a token to collect data from Cisco DNA Center API and prepares a Python script to send requests. Which line of code needs to be placed on the snippet where the code is missing to obtain a token from the Cisco DNA Center API?

  A. token=BasicAuth(`user',`password'))

  B. auth=BasicAuth(`user',`password'))

  C. auth=HTTPBasicAuth(user,password))

  D. token=HTTPBasicAuth(user,password))

  Correct Answer: C

• Question 146:

  Refer to the exhibit.

  

  A network engineer must copy the "config.txt" file from directory TEST to directory PROD. The copied file must also be renamed into "current.txt". Which command must be used to accomplish these tasks?

  A. cp ./PROD/current.txt ./TEST/config.txt

  B. cp ./TESTi/current.txt ./PROD/config.txt

  C. cp ./PROD/config.txt ./TEST/current.txt

  D. cp ./TEST/config.txt ./PROD/current.txt

  Correct Answer: D

• Question 147:

  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

  Correct Answer: C

• Question 148:

  Refer to the exhibit.

  

  An engineer runs a network that consists of Cisco Nexus devices. The network is distributed between data centers in different locations. The switches are configured using standalone connections and a single point of failure. Which process is being automated by the Ansible playbook?

  A. enabling HSRP on the nxos_rtr inventory host

  B. enabling HSRP on the rtr-1a inventory host

  C. executing HSRP configuration from the Ansible controller node

  D. executing HSRP configuration from the srv-1a inventory host

  Correct Answer: B

• Question 149:

  What is a benefit of using model-driven programmability for infrastructure automation?

  A. connected user tracking

  B. infrastructure resource optimization

  C. multiple device control protocols

  D. device performance monitoring

  Correct Answer: C

• Question 150:

  What is the function of an Ethernet switch in a networking environment?

  A. to switch a frame from one port to another port based on IP address

  B. to switch a frame from one port to another port based on MAC address

  C. to provide IP addressing to connected hosts

  D. to block unwanted traffic

  Correct Answer: B