Cisco Updated 200-901 Exam Questions and Answers by amelia-rose

Network Time Protocol (NTP) is used to synchronize the clocks of network devices to a common reference time. This is crucial for ensuring accurate time stamps in logs, coordinating time-sensitive operations, and maintaining consistent time across all devices in a network.

NTP: Synchronizes clocks of network devices to ensure they have the same time, which is essential for accurate event logging and coordination.

Other Protocols:

DNS: Resolves domain names to IP addresses.

SNMP: Used for monitoring network devices.

NAT: Translates private IP addresses to public IP addresses.

References:

Cisco DevNet Associate Certification Guide

Cisco NTP Overview

Implementing common data structures when working with APIs in remote systems has multiple benefits:

Enforces standardized data structures: This ensures consistency and interoperability across different systems and APIs, making it easier to integrate and communicate between various components.

Leverages code that is easily managed and reused: Standardized data structures lead to more maintainable and reusable code. Developers can build upon existing frameworks and libraries without having to rewrite data handling logic for each new API.

References: Cisco DevNet Data Structures

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Webhooks typically use the HTTP POST method to notify a listener about an event change. When an event occurs, the source system sends an HTTP POST request to the listener's URL with the details of the event, allowing the receiving system to process and respond to the event.

References:

Cisco DevNet Documentation - Webhooks

Cisco DevNet Associate Certification Guide

An HTTP 404 status code indicates that the requested resource could not be found. In the context of the Cisco DNA Center API, this usually means that the URL being accessed is incorrect or the endpoint does not exist. The solution is to verify and correct the API URL to ensure it points to a valid endpoint.

Example correct API URL:

url = 'https://sandboxdnac.cisco.com/dna/intent/api/v1/... '

This ensures that the script is making requests to the correct API endpoint.

References:

Cisco DNA Center API Documentation

Cisco DevNet Associate Certification Guide