8. Compare Common API Styles (REST, RPC, Synchronous, and Asynchronous) 200-901 Practice Questions (Page 6)

Questions 26–29

1. 26foundation · easy

   Which mechanism is commonly used by asynchronous APIs to deliver results to the client?

   • AThe server immediately returns the final result in the HTTP response
   • BThe client waits for the server to respond on the same connection
   • CThe client sends multiple requests and the server aggregates them into one response
   • DThe server sends the response to a callback URL or the client polls for status
   Reveal Solution Discussion Select an answer first
2. 27application · medium

   A network engineer is writing a script that must configure a router and then immediately verify the configuration. The script should be simple and not require additional logic to handle delayed responses. Which API approach should the engineer use?

   • ASynchronous REST API call that returns the configuration after the change is applied
   • BAsynchronous REST API call that returns a job ID and requires polling for the result
   • CAsynchronous RPC call that uses a callback to notify when the configuration is complete
   • DSynchronous RPC call that returns a job ID and requires a separate status check
   Reveal Solution Discussion Select an answer first
4. 28application · medium

   A network automation platform needs to handle thousands of configuration changes per hour. The platform should not wait for each change to complete before submitting the next one. Which API design should the platform use?

   • ASynchronous RPC calls that block until each configuration change is applied
   • BSynchronous REST API calls that wait for each response before sending the next request
   • CAsynchronous RPC calls that return a job ID but require the client to wait for a callback
   • DAsynchronous REST API calls that submit requests and later check status via polling or webhooks
   Reveal Solution Discussion Select an answer first
5. 29foundation · easy

   Which protocol is an example of an RPC-style API?

   • AGraphQL
   • BOAuth 2.0
   • CWebSocket
   • DJSON-RPC
   Reveal Solution Discussion Select an answer first