Cisco Cisco Certified DevNet Professional 350-901 Questions & Answers

• Question 241:

  A client is written that uses a REST API to interact with a server. Using HTTPS as the transport, an HTTP request is sent and received an HTTP response. The response contains the HTTP response status code: 503 Service Unavailable.

  Which action is the appropriate response?

  A. Add an Authorization header that supplies appropriate credentials and sends the updated request.

  B. Resend the request using HTTP as the transport instead of HTTPS.

  C. Add an Accept header that indicates the content types that the client understands and send the updated request.

  D. Look for a Retry-After header in the response and resend the request after the amount of time indicated.

  Correct Answer: D

• Question 242:

  What is a consideration for using gRPC as the model-driven telemetry protocol on a Cisco IOS XE device?

  A. XML-based transmission format

  B. works in dial-out mode

  C. human-readable transmission format

  D. works in call-out mode

  Correct Answer: B

• Question 243:

  What are two principles according to the build, release, run principle of the twelve-factor app methodology? (Choose two.)

  A. Code changes are able to be made at runtime.

  B. Separation between the build, release, and run phases.

  C. Releases should have a unique identifier.

  D. Existing releases are able to be mutated after creation.

  E. Release stage is responsible for compilation of assets and binaries.

  Correct Answer: BC

  Reference: https://www.bmc.com/blogs/twelve-factor-app/

• Question 244:

  What is an effective logging strategy according 10 the 12-factor app tenets?

  A. Capture togs by the execution environment and route to a centralized destination

  B. Tag and save togs in a local document database that has querying capabilities.

  C. Back up log files in a high-availability remote cluster on the public cloud

  D. Timestamp and save logs in a local time-series database that has querying capabilities

  Correct Answer: A

• Question 245:

  Which two gRPC modes of model-driven telemetry are supported on Cisco IOS XE Software? (Choose two.)

  A. dial-in

  B. dial-out

  C. call-in

  D. call-out

  E. passive

  Correct Answer: AB

  Reference: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/prog/configuration/1612/b_1612_programmability_cg/model_driven_telemetry.html#id_86392

• Question 246:

  A timeframe custom dashboard must be developed to present data collected from Cisco Meraki. The dashboard must include a wireless health alert count. What needs to be built as a prerequisite?

  A. A publicly available HTTP server to receive Meraki Webhooks from the Meraki Dashboard API

  B. A publicly available HTTP server to receive Meraki Webhooks from the Meraki Scanning API

  C. A daemon to consume the Wireless Health endpoint of the Meraki Scanning API

  D. A daemon to consume the Wireless Health endpoint of the Meraki Dashboard API

  Correct Answer: A

• Question 247:

  What is a well-defined concept for GDPR compliance?

  A. Records that are relevant to an existing contract agreement can be retained as long as the contract is in effect.

  B. Data controllers must confirm to data subjects as to whether where, and why personal data is being processed.

  C. Personal data that was collected before the compliance standards were set do not need to be protected.

  D. Compliance standards apply to organizations that have a physical presence in Europe.

  Correct Answer: B

• Question 248:

  Refer to the exhibit.

  

  A developer created the code, but it fails to execute. Which code snippet helps to identify the issue?

  

  A. Option A

  B. Option B

  C. Option C

  D. Option D

  Correct Answer: A

  >>> read_file = open("me.txt", "r") Traceback (most recent call last): File "", line 1, in FileNotFoundError: [Errno 2] No such file or directory: 'me.txt' >>>

• Question 249:

  A container running a Python script is failing when it reaches the integration testing phase of the CI/CD process. The code has been reviewed thoroughly and the build process works on this container and all other containers pass unit and integration testing.

  What should be verified to resolve the issue?

  A. that the correct port is exposed in the Dockerfile

  B. that the necessary modules and packages are installed on build

  C. that the script is running from the right directory

  D. that the Python version of the container image is correct

  Correct Answer: A

• Question 250:

  What are two steps in the OAuth2 protocol flow? (Choose two.)

  A. The user is authenticated by the authorization server and granted an access token.

  B. The user's original credentials are validated by the resource server and authorization is granted.

  C. The user indirectly requests authorization through the authorization server.

  D. The user requests an access token by authentication and authorization grant presentation.

  E. The user requests the protected resource from the resource server using the original credentials.

  Correct Answer: AE

  Reference: https://www.digitalocean.com/community/tutorials/an-introduction-to-oauth-2