4. Explain Common HTTP Response Codes Associated with REST APIs 200-901 Practice Questions (Page 1)

Questions 1–5

1. 1foundation · easy

   An API client sends a GET request for a resource and receives a 304 Not Modified response. What does this indicate?

   • AThe request was malformed and must be corrected.
   • BThe server encountered an error while processing the request.
   • CThe client's cached copy of the resource is still valid and can be used.
   • DThe resource has been permanently moved to a new URL.
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2. 2expert · hard

   A network automation script is intermittently failing when calling a REST API. The error logs show a mix of 401 Unauthorized and 500 Internal Server Error responses. The script uses a token that is refreshed every hour. What is the most likely cause of the 401 errors, and what should be done?

   • AThe API endpoint has moved; update the base URL.
   • BThe API server is overloaded; increase the timeout and retry count.
   • CThe token is expiring before the refresh interval; implement a retry with token refresh on 401.
   • DThe request body is malformed; validate the JSON before sending.
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4. 3application · medium

   A network engineer is using a REST API to update the hostname of a switch. The API returns HTTP 400 Bad Request. The engineer has verified that the authentication token is valid and the URL is correct. What is the most likely cause of this response?

   • AThe authenticated user does not have permission to change the hostname.
   • BThe switch does not exist.
   • CThe request body contains invalid JSON or missing required fields.
   • DThe API endpoint does not support the PUT method.
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5. 4foundation · easy

   A REST API client receives a 301 Moved Permanently response. What should the client do to successfully access the resource?

   • ARetry the same request with the same URL after a short delay.
   • BFollow the redirect by sending a new request to the URL in the Location header.
   • CChange the HTTP method to POST and resend the request.
   • DUse the cached version of the resource without contacting the server.
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6. 5application · medium

   A developer is building a REST API for a network device configuration manager. The API should allow clients to delete a specific interface configuration. Which HTTP method and success response code combination is most appropriate for this operation?

   • APOST method with 201 Created
   • BGET method with 200 OK
   • CPUT method with 200 OK
   • DDELETE method with 204 No Content
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