Cisco Cisco Certified DevNet Associate 200-901 Questions & Answers

• Question 131:

  Which Python function is used to parse a string that contains JSON data into a Python dictionary?

  A. json.dumps()

  B. json.to_json()

  C. json.parse()

  D. json.loads()

  Correct Answer: D

• Question 132:

  A developer must test the performance and reliability of an application. After functional and load tests are run, the application crashes due to traffic spikes from users. Which type of API constraint must be implemented to maintain reliability?

  A. rate limiting

  B. pagination

  C. payload limits

  D. filtering

  Correct Answer: A

  https://datadome.co/bot-management-protection/what-is-api-rate-limiting/

• Question 133:

  A team of developers is responsible for a network orchestration application in the company. The responsibilities also include:

  1.

  developing and improving the application in a continuous manner

  2.

  deployment of the application and management of CI/CD frameworks

  3.

  monitoring the usage and problems and managing the performance improvements Which principle best describes this DevOps practice?

  A. responsible for IT operations

  B. automation of processes

  C. end-to-end responsibility

  D. quality assurance checks

  Correct Answer: C

  The key words "developing," "deployment," "monitoring," and "managing" show end-to-end responsibility.

• Question 134:

  A developer is working on a new feature in a branch named 'newfeat123456789' and the current working primary branch is named 'prim987654321'. The developer requires a merge commit during a fast forward merge for record-keeping purposes. Which Git command must be used?

  A. git merge --no-ff newfeat123456789

  B. git commit --no-ff newfeat123456789

  C. git add --commit-ff newfeat123456789

  D. git reset --commit-ff newfeat123456789

  Correct Answer: A

  In the event that you require a merge commit during a fast forward merge for record keeping purposes you can execute git merge with the --no-ff option.

  This command merges the specified branch into the current branch, but always generates a merge commit (even if it was a fast-forward merge). This is useful for documenting all merges that occur in your repository.

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

• Question 135:

  A developer has experienced security issues with a previously developed application. The API offered by that application is open and without any constraints. During a recent attack, the application was overloaded with API requests. To address this issue, an API constraint is implemented to protect the application from future attacks or any sudden throttling. Which API constraint must the application developer implement in this situation?

  A. pagination

  B. rate limiting

  C. filtering

  D. payload limiting

  Correct Answer: B

• Question 136:

  Which protocol runs over TCP port 830?

  A. NETCONF

  B. Telnet

  C. RESTCONF

  D. HTTP

  Correct Answer: A

• Question 137:

  Which solution reduces costs from MPLS, improves application performance, and simplifies operations?

  A. Cisco NSO

  B. Cisco SD-WAN

  C. Cisco ACI

  D. Cisco DNA Center

  Correct Answer: B

  https://www.cisco.com/c/en/us/solutions/enterprise-networks/sd-wan/what-is-sd-wan.html

• Question 138:

  Which IP service is used to monitor the performance of network devices?

  A. SNMP

  B. DHCP

  C. DNS

  D. NTP

  Correct Answer: A

• Question 139:

  Which IP service synchronizes the time across devices?

  A. DNS

  B. NTP

  C. SNMP

  D. NAT

  Correct Answer: B

• Question 140:

  What is a firehose webhook?

  A. It collects data from third-party cloud APIs for custom applications.

  B. It enables an application to receive real-time data from Cisco Webex.

  C. It enables data to flow from the Cisco Webex API to a user's application.

  D. It sends a notification of any event for commonly used resources.

  Correct Answer: D