Cisco Cisco Certified DevNet Associate 200-901 Questions & Answers

• Question 491:

  What is a benefit of organizing code into modules?

  A. enables the code to be broken down into layers

  B. improves collaboration of the development team

  C. makes it easier to deal with large and complex systems

  D. enables the inclusion of more programming languages in the code

  Correct Answer: B

• Question 492:

  A developer needs a list of clients connected to a specific device in a Meraki network. After making a REST API call, the developer receives an unfamiliar response code. Which Cisco DevNet resource should be used to identify the meaning of the response code?

  A. API documentation

  B. Code Exchange

  C. Learning Labs

  D. Sandbox

  Correct Answer: A

  https://dynomapper.com/blog/254-the-6-types-of-http-status-codes-explained

• Question 493:

  A developer is trying to retrieve data over a REST API. The API server responds with an HTTP client error response code. After investigating the response the developer realizes the response has a Retry-After header. What is the root cause of this error?

  A. An appliance limited the rate of requests to the transport layer.

  B. The REST service is unreachable at the time of the REST request.

  C. Too many requests were sent to the REST service in a given amount of time.

  D. An appliance limited the rate of requests to the application layer.

  Correct Answer: C

  The Retry-After response HTTP header indicates how long the user agent should wait before making a follow-up request. There are three main cases this header is used:

  When sent with a 503 (Service Unavailable) response, this indicates how long the service is expected to be unavailable.

  When sent with a 429 (Too Many Requests) response, this indicates how long to wait before making a new request.

  When sent with a redirect response, such as 301 (Moved Permanently), this indicates the minimum time that the user agent is asked to wait before issuing the redirected request.

• Question 494:

  While developing a real-time VoIP application on a Cisco Webex Teams platform, users report that their voice gets chopped or parts of the conversation drops out. Which network constraint is impacting the application?

  A. jitter

  B. capacity

  C. delay

  D. latency

  Correct Answer: A

• Question 495:

  What are two key capabilities of Cisco Finesse? (Choose two.)

  A. Agents access Finesse from a browser without needing to install or configure anything on the client machine.

  B. An OpenDNS utility is preconfigured and ready to use on Finesse.

  C. Gadget containers provide a seamless experience in a single user interface.

  D. Finesse automatically collects telemetry data.

  E. Finesse includes an RPC API that enables the development of custom gadgets.

  Correct Answer: AC

• Question 496:

  Refer to the exhibit.

  

  An API call is constructed to retrieve the inventory in XML formal by using the API. The response to the call is 401 Unauthorized. Which two headers must he added to the API call? (Choose two.)

  A. Bearer-Token: dXNlcm5hbWU6cGFzc3dvemQ=

  B. Content-Type: application/xml

  C. Authentication: Bearer dXNlcm5hbWU6cGFzc3dvemQ=

  D. Accept: application/xml

  E. Authorization: Bearer dXNlcm5hbWU6cGFzc3dvemQ=

  Correct Answer: DE

  A. is Incorrect because there is no Bearer-Token header in HTTP

  B. is Incorrect, because the image shows Method GET, and Content-Type header defines the type of data you use in the payload of a Method POST C. is incorrect, because Authentication is not the correct HTTP header

  D. is correct, because Accept header defines the expected response data format of a Method GET

  E. is correct, because the header Authorization is the one used for OAuth and Basic Auth

• Question 497:

  Where is an IP packet routed if the packet does not match any routes in the routing table?

  A. firewall

  B. load balancer

  C. central switch

  D. default gateway

  Correct Answer: D

• Question 498:

  Which configuration management tool has an agentless capability?

  A. Puppet

  B. CFEngine

  C. Ansible

  D. Chef

  Correct Answer: C

• Question 499:

  A developer is creating a script to interact with a REST API service which requires basic authentication. The credentials are "devnet:391665405" and the Base64 encoding of the credentials is "GV2bmV0dXNlcjpDaXNj=". Which payload and header combination must be used for authentication?

  

  A. Option A

  B. Option B

  C. Option C

  D. Option D

  Correct Answer: B

  https://developer.cisco.com/docs/epnm/#!how-to-authenticate/authorization

• Question 500:

  What is a benefit of using edge computing in an IoT implementation?

  A. high speed in data processing

  B. low network design complexity

  C. low cost in network design

  D. high availability for network components

  Correct Answer: A