A network management system needs to execute a series of commands on a router, such as 'show version' and 'show interfaces'. The system wants to use an API that is action-oriented and supports multiple commands in a single call. Which API style is most appropriate?

REST API using HTTP methods to represent commands, such as GET for 'show version'

RPC API with a single method that returns a job ID for each command

RPC API with methods like executeCommand(command)

REST API with a resource for each command, such as /commands/show-version

Which scenario is a typical use case for a synchronous API?

Fetching a user's profile information to display on a web page

Submitting a long-running report generation job and checking its status later

Sending an email notification after a user action without waiting for delivery confirmation

Uploading a large video file and receiving a notification when processing is complete

A network engineer is writing a script that must retrieve the current VLAN configuration from a switch and then immediately use that configuration to make a decision. The script cannot proceed until the VLAN data is received. Which API behavior is most appropriate for this task?

Use an asynchronous API call and poll for the result in a loop until the data is available.

Use a synchronous API call that blocks the script until the response is received.

Use an asynchronous API call with a callback that processes the VLAN data when it arrives.

Use an RPC call that returns a job ID and later retrieve the result.

Which set of characteristics best describes a REST API?

Event-driven messaging with a central broker and topics

Resource-based URLs, standard HTTP methods, and stateless communication

Binary serialization with a schema definition and remote procedure calls

Action-oriented calls that use a single endpoint and custom methods

A network operations team is integrating a third-party service that sends a notification whenever a link goes down. The service cannot accept long-lived connections, and the team wants to avoid polling. Which approach should they use to receive these notifications?

Use a callback URL that the service invokes only after the team polls for events

Use synchronous REST calls to fetch link status every minute

Use a webhook that the service calls to POST the link-down event to the team's endpoint

Use an RPC method that blocks until a link-down event occurs

CiscoCertified Network Associate Automation (CCNA Automation)

Domain 2Objective 8

8. Compare Common API Styles (REST, RPC, Synchronous, and Asynchronous) 200-901 Practice Questions (Page 1)

Part of the 2.0 Understanding and Using APIs domain, which accounts for 20% of the 200-901 exam. Cisco does not publish an official question count, but from its 120-minute exam (~50–80 total, ~10–16 in this domain), expect 1–2 from this objective — we provide 29 practice questions to prepare you well beyond it. (estimate)

29questions here

6free pages

6concepts

20%of the exam

Questions 1–5

1application · medium
A network management system needs to execute a series of commands on a router, such as 'show version' and 'show interfaces'. The system wants to use an API that is action-oriented and supports multiple commands in a single call. Which API style is most appropriate?
Select an answer first
2foundation · easy
Which scenario is a typical use case for a synchronous API?
Select an answer first
3application · medium
A network engineer is writing a script that must retrieve the current VLAN configuration from a switch and then immediately use that configuration to make a decision. The script cannot proceed until the VLAN data is received. Which API behavior is most appropriate for this task?
Select an answer first
4foundation · easy
Which set of characteristics best describes a REST API?
Select an answer first
5application · medium
A network operations team is integrating a third-party service that sends a notification whenever a link goes down. The service cannot accept long-lived connections, and the team wants to avoid polling. Which approach should they use to receive these notifications?
Select an answer first

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