Important Cisco 200-901 CCNAAUTO Exam Questions

Answer: B

Explanation:

Infrastructure as Code (IaC) principles relate to the service provisioning stage of development. IaC involves managing and provisioning computing infrastructure through machine-readable definition files, rather than through physical hardware configuration or interactive configuration tools.

Service Provisioning: IaC allows for the automated deployment and management of infrastructure resources. This includes servers, databases, networks, and other components necessary for running applications and services.

Automation and Consistency: IaC ensures that the infrastructure is provisioned consistently and repeatably, reducing the chances of human error and increasing efficiency.

Cisco DevNet Associate Certification Guide

Infrastructure as Code (IaC) Principles

Answer: C

Explanation:

The provided JSON configuration includes information about a GigabitEthernet interface with the name '2'. To retrieve information about this specific interface using a RESTCONF API call, the correct HTTP method and URL must be used.

HTTP Method: The GET method is used to retrieve information from the server.

Correct URL: The URL must specify the path to the particular interface. The correct URL structure includes the native and interface resources, followed by the interface type (GigabitEthernet) and its specific name ('2').

The correct RESTCONF API call to retrieve the information would be:

GET https://devnetlab.local/restconf/api/running/native/interface/GigabitEthernet/2/

This URL correctly targets the specific GigabitEthernet interface named '2' in the running configuration.

Cisco RESTCONF API Documentation: RESTCONF API Guide

Answer: C

Explanation:

Jenkins is a widely used automation tool for building, testing, and deploying software. It is an open-source CI/CD tool that supports the automation of various stages of software development through plugins, providing a robust platform for continuous integration and continuous deployment. Jenkins allows developers to integrate changes more frequently, improving collaboration and accelerating the development process. Reference: Cisco DevNet Associate Certification Guide, Chapter 5, Section on CI/CD Tools.

Answer: C

Explanation:

In the provided Python script, database credentials (DB_USER, DB_PWD) are stored in a JSON configuration file (config.json). While it is common to store configuration and credentials in external files, they should always be encrypted to ensure security.

Secret Management: Storing secrets such as database credentials directly in configuration files in plaintext is a security risk.

Encryption: Secrets must be encrypted to protect them from unauthorized access. This can be achieved using various methods such as encrypting the configuration file itself or using secret management tools.

Best Practices: Always ensure that sensitive information like passwords is encrypted when stored, especially in files that might be part of the source code.

Option C is the correct answer because it emphasizes the necessity of encrypting secrets if they are stored in the user database or configuration files to prevent unauthorized access.

Cisco DevNet Documentation: Secure Coding Practices

Answer: A, E

Explanation:

Clients make several types of queries to DNS servers. The two relevant types here are:

AAAA: This query type requests the IPv6 address associated with a domain name.

PTR: This query type is used for reverse DNS lookups, where it maps an IP address to a domain name.

AAAA (Quad-A) records store IPv6 addresses of a domain.

PTR (Pointer) records are used in reverse DNS lookups to map IP addresses to the corresponding domain names.