5. Troubleshoot a Problem Given the HTTP Response Code, Request and API Documentation 200-901 Practice Questions (Page 6)

Questions 26–30

1. 26expert · hard

   An engineer is troubleshooting a failed API call to a Cisco SD-WAN vManage API. The request is a PUT to /dataservice/device/configuration with a JSON body. The response is HTTP 400 Bad Request with a body that includes a validation error message: 'Field 'deviceId' is required.' The engineer checks the request and sees that the deviceId field is present in the JSON body. What is the most likely cause?

   • AThe request method should be POST instead of PUT
   • BThe field name is misspelled or uses the wrong case (e.g., 'deviceid' instead of 'deviceId')
   • CThe server is down
   • DThe API token is invalid
   Reveal Solution Discussion Select an answer first
2. 27application · medium

   A network admin is using a Cisco Meraki API to update a network's settings. The PUT request returns HTTP 409 Conflict. The admin checks the documentation and finds that the API uses optimistic concurrency control with an ETag header. What is the most likely cause of the 409?

   • AThe API token does not have write permission
   • BThe request body is too large
   • CThe resource was modified by another client since the ETag was obtained
   • DThe server is temporarily down
   Reveal Solution Discussion Select an answer first
4. 28application · medium

   A developer is using a Cisco Firepower Management Center API to retrieve access control policy details. The API documentation specifies that the endpoint requires a query parameter 'include' with a value of 'rules'. The developer sends a GET request without the query parameter and receives HTTP 400 Bad Request. What is the most appropriate action?

   • AChange the HTTP method from GET to POST
   • BCheck the server logs for an internal error
   • CAdd the required query parameter 'include=rules' to the request URL
   • DRetry the request with the same URL after a delay
   Reveal Solution Discussion Select an answer first
5. 29foundation · easy

   A network engineer receives a 404 Not Found response when calling a REST API endpoint. Which statement correctly describes the meaning of this status code?

   • AThe client is not authorized to access the requested resource.
   • BThe request was malformed and could not be understood by the server.
   • CThe requested resource does not exist on the server.
   • DThe server encountered an unexpected condition that prevented it from fulfilling the request.
   Reveal Solution Discussion Select an answer first
6. 30application · medium

   An engineer is using a REST API to configure a network device. The API documentation states that the endpoint /api/v1/device/config accepts a PUT request with a JSON body containing a 'hostname' field. The engineer sends a PUT request with a JSON body that includes an extra field 'description'. The API returns HTTP 400 Bad Request. What is the most likely cause?

   • AThe API rejects requests with unexpected fields in the JSON body.
   • BThe API requires an authentication header.
   • CThe API expects XML instead of JSON.
   • DThe API requires a POST method instead of PUT.
   Reveal Solution Discussion Select an answer first