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Developing Applications using Cisco Core Platforms and APIs (DEVCOR) Questions 50–54 (page: 12)

Which RFC5988 (Web Linking) relation type is used in the Link header to control pagination in APIs?

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?

Refer to the exhibit. Two editors are concurrently updating an article’s headline from their mobile devices. What results from this scenario based on this REST API sequence?

Refer to the exhibit. This snippet of a script has recently started exiting abnormally with an exception stating “Unexpected HTTP Response code: 429”.


Which solution handles rate limiting by the remote API?

An application uses OAuth to get access to several API resources on behalf of an end user.
What are two valid parameters to send to the authorization server as part of the first step of an authorization code grant flow? (Choose two.)