Cisco CCNA Network Automation and APIs 3

Question 1

What is the function of a YANG model in network automation?

Accepted Answer

It defines the data structure and constraints for network configuration

Answer

YANG (Yet Another Next Generation) is a data modeling language that defines the structure, syntax, and semantics of network configuration data.

Question 2

Which tool uses an agentless architecture and communicates with network devices over SSH by default?

Accepted Answer

Ansible

Answer

Ansible is agentless and uses SSH (or APIs) to communicate with managed devices, requiring no agent software on endpoints.

Question 3

In a REST API, what does the endpoint '/api/v1/devices/{id}' with a DELETE method accomplish?

Accepted Answer

Removes the device with the specified ID

Answer

A DELETE request to a resource URI with a specific ID removes that particular resource from the system.

Question 4

What is a webhook in the context of network automation?

Accepted Answer

An HTTP callback triggered by an event to notify another system

Answer

A webhook is an HTTP POST callback sent to a URL when a specific event occurs, enabling event-driven automation.

Question 5

Which Cisco platform provides a REST API for managing network infrastructure through a centralized controller?

Accepted Answer

Cisco DNA Center

Answer

Cisco DNA Center (now Cisco Catalyst Center) exposes northbound REST APIs for network intent-based automation and management.

Cisco CCNA Practice Test