Important Cisco 200-901 CCNAAUTO Exam Questions

Answer: B

Explanation:

Tracking Changes: VCS keeps a detailed history of changes made to files, including who made the change and when.

Collaboration: Multiple users can work on the same project simultaneously without overwriting each other's work.

Reverting Changes: It allows reverting to previous versions if a mistake is made.

Option B is correct as it highlights the primary benefit of version control---keeping track of all changes to the files.

Cisco DevNet Documentation: Version Control with Git

Answer: A

Explanation:

The 401 Unauthorized status code indicates that the request lacks valid authentication credentials. When using OAuth2 for authenticating with the Cisco Webex API, the correct approach is to include a Bearer token in the Authorization header.

Option A:

header = {'Authorization': 'Bearer YOUR_TOKEN'}

This option correctly formats the Authorization header, which is necessary for the Webex API to authenticate the request. The Bearer token is a type of token used by OAuth2 to access protected resources.

Authorization Header: The header must contain the key 'Authorization' with the value formatted as 'Bearer YOUR_TOKEN'.

Bearer Token: The Bearer keyword followed by a space and the token itself is the correct way to pass the OAuth2 token in the header.

Other Options:

Option B:

Incorrect because it uses 'Authentication' instead of 'Authorization'.

Option C:

Incorrect because it combines Authentication and Bearer incorrectly without a space.

Option D:

Incorrect for the same reason as Option C.

Cisco Webex API Authentication

OAuth2 Authorization Header =====================

Answer: C

Explanation:

A router is a network component that enables communication between different broadcast domains by forwarding data packets between them based on their IP addresses.

Broadcast Domains: A broadcast domain is a network segment where a broadcast frame is forwarded to all devices.

Router Function: Routers separate broadcast domains, allowing communication between them by routing packets based on their destination IP addresses.

Network Components: Routers and Broadcast Domains

Answer: A

Explanation:

When configuring a Cisco IOS XE device using RESTCONF, the default data-encoding method is XML. RESTCONF is a protocol used to access configuration data and operational data using a REST-like API, and it uses XML as the default encoding method for data exchange.

XML: Used as the default encoding method for RESTCONF.

x-form-encoding: Not used by RESTCONF.

YANG: A data modeling language used to model configuration and state data manipulated by NETCONF and RESTCONF, but not an encoding method.

YAML: Not used by RESTCONF.

Answer: B

Explanation:

Ansible playbooks are used to define the desired state of a device configuration. Playbooks contain a series of tasks that describe the configuration management, deployment, and orchestration tasks. They are written in YAML and are designed to be simple yet powerful, allowing users to define the state and ensure that devices are configured accordingly.