Last Updated on June 14, 2021 by Admin

DevNet Associate (Version 1.0) – DevNet Associate Module 4 Exam Answers

  1. In which situation would a synchronous API be used?

    • when the client is not required to take action
    • when the original API request or data from the request is delayed
    • when data is being retrieved from a database
    • when a server is not part of the process
  2. Which API architectural style uses an XML-based messaging protocol to communicate between applications?

    • SOAP
    • XML-RPC
    • REST
    • NFS
  3. Which SOAP message root element defines the XML document as a SOAP message?

    • Header
    • Meta tag
    • Body
    • Envelope
  4. What is the meaning of the term flow as it relates to the OAuth 2.0 authorization framework?

    • It is the number of requests contained in the token bucket.
    • It is the sequence of data exchanged between a REST API request and a response.
    • It is a process for an API request to send authentication credentials to a web service.
    • It is a process for an API user to obtain an access token from the authorization server.
  5. Refer to the exhibit. A network administrator is using a Python script to test a REST API request. The traceback message indicates that there is an error in the URI. What is a possible issue?

    DevNet Associate (Version 1.0) – DevNet Associate Module 4 Exam Answers 01
    DevNet Associate (Version 1.0) – DevNet Associate Module 4 Exam Answers 01
    • The SSL certificate is invalid.
    • The protocol is wrong.
    • The destination host address is wrong.
    • The query component is missing.
  6. A network engineer is learning about Rest APIs. When executing a particular API, the server responds with curl. How is this information useful?

    • Curl shows the URL used in the API request.
    • Curl shows how to access the content displayed in the response body using curl.
    • Curl shows the information the API returned from the server.
    • Curl shows the retrieved information in JSON format.
  7. A client is sending a REST API request to a web server. The request includes the need for data compression. Which three values are acceptable for the Accept-Encoding request header? (Choose three.)

    • xz
    • zip
    • br
    • *
    • gzip
    • tar
  8. Which characteristic of the SOAP architecture specifies communication between all similar and dissimilar application types?

    • interface uniformity
    • neutrality
    • independence
    • extensibility
  9. Refer to the exhibit. A network administrator is using a Python script to send a REST API request. What is the purpose of the line of code resp = requests.get(url, verify = False) ?

    DevNet Associate (Version 1.0) – DevNet Associate Module 4 Exam Answers 02
    DevNet Associate (Version 1.0) – DevNet Associate Module 4 Exam Answers 02
    • It bypasses the certificate validation check.
    • It skips the URL verification step and tests the resource path.
    • It tests the function of the Python requests library.
    • It omits the sending URL in the response.
  10. What is an architectural constraint to which a true RESTful API web service must adhere?

    • It uses HTTPS to transport data.
    • It operates in a stateless way.
    • It operates as a cloud service.
    • It must operate along with a DNS server.
  11. What is a characteristic of a RESTful API?

    • It supports a secure data transmission between a remote user and an enterprise network.
    • It uses HTTP methods to gather and manipulate data.
    • It facilitates the configuration changes from a network controller to end devices.
    • It is a southbound API.
  12. Match the RESTful API method to CRUD function.

    DevNet Associate (Version 1.0) – DevNet Associate Module 4 Exam Answers 001
    DevNet Associate (Version 1.0) – DevNet Associate Module 4 Exam Answers 001
  13. What are two purposes for using rate limits on public and unrestricted APIs? (Choose two.)

    • to avoid a server overloading from too many requests at the same time
    • to limit the number of authorization requests per API call
    • to limit the number of passwords that a client can have in making API requests
    • to ensure a client uses a multifactor authentication mechanism
    • to provide better service and response time to all users
      Answers Explanation & Hints:

      Using an API rate limit is a way for a web service to control the number of requests a user or application can make per defined unit of time and it is considered a best practice for public and unrestricted APIs. Some benefits of using rate limits include the following:

      • Avoid a server overload from too many requests at once.
      • Provide better service and response time to all users.
      • Protect against a denial of service (DoS) attack.
  14. Which HTTP response status code indicates that the user is not authenticated to access the site?

    • 201
    • 400
    • 401
    • 403
    • 404
  15. In the REST API request URI example http://example.com/update/person?id=42&email=person%40example.com , which term describes the component example.com ?

    • path
    • authority
    • scheme
    • query
  16. Which type of credential information is used for the bearer authentication in REST APIs?

    • a username and password set by the client
    • an MD5 hash string generated by the client application
    • a password encoded using Base64
    • a string generated by an authentication server
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