8. Compare Common API Styles (REST, RPC, Synchronous, and Asynchronous) 200-901 Practice Questions (Page 3)

Questions 11–15

1. 11foundation · easy

   What is a common trade-off when choosing an asynchronous API over a synchronous API?

   • AAsynchronous APIs provide better scalability but add complexity in handling responses
   • BAsynchronous APIs are simpler to implement but provide slower responses
   • CAsynchronous APIs are easier to debug but require more bandwidth
   • DAsynchronous APIs are more secure but require additional authentication
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2. 12foundation · easy

   Which statement correctly compares typical data formats used by REST and RPC APIs?

   • AREST uses only binary formats, while RPC uses only text formats
   • BREST always uses XML, while RPC always uses JSON
   • CREST typically uses JSON or XML, while RPC often uses binary formats like Protocol Buffers
   • DBoth REST and RPC use the same data format by default
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4. 13foundation · easy

   Which scenario is better suited for an asynchronous API rather than a synchronous API?

   • AA client submits a complex data analysis job that may take several minutes to complete
   • BA client needs to retrieve a small record and display it immediately
   • CA client needs to authenticate and receive a token for subsequent requests
   • DA client wants to update a configuration setting and expects immediate confirmation
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5. 14application · medium

   A team is evaluating two APIs for network device management. API A uses URLs like '/interfaces/1' and HTTP methods GET, POST, PUT, DELETE. API B uses method calls like 'getInterface(1)' and 'updateInterface(1, config)' over JSON-RPC. Which statement correctly compares the two APIs?

   • ABoth APIs are RESTful because they both use JSON for data exchange.
   • BBoth APIs are RPC because they both perform actions on network devices.
   • CAPI A is RPC because it uses HTTP methods; API B is REST because it uses JSON.
   • DAPI A is RESTful because it uses resource-based URLs and HTTP methods; API B is RPC because it uses action-oriented method calls.
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6. 15application · medium

   A developer is comparing REST and RPC for a new API that will be used to manage network devices. The API will need to support both resource operations (like retrieving device info) and action operations (like rebooting a device). Which approach is most appropriate?

   • AUse a single RPC method for all operations with a type parameter
   • BUse REST for all operations, modeling reboot as a resource update
   • CUse REST for resource operations and RPC for action operations
   • DUse RPC for all operations, including retrieving device info
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