Cisco Cisco Certified DevNet Associate 200-901 New Questions

Model-driven programmability refers to using data models to define the desired state of network infrastructure and automate its configuration and management. This approach offers several benefits:

Infrastructure Resource Optimization: Model-driven programmability allows for more efficient use of network resources by ensuring consistent and optimal configurations. Automation driven by data models helps in reducing human errors and improving the overall performance and utilization of the infrastructure.

Consistency: Automated, model-driven configurations ensure that network devices are consistently configured, reducing variability and the risk of misconfigurations.

Scalability: It enables scalable automation solutions that can easily adapt to changing network requirements and topologies.

References:

Cisco DevNet Associate Certification Guide

Cisco Model-Driven Programmability

To protect secrets such as API URLs, shared keys, and other application configurations, it is best practice to: C. Ensure they never appear in plaintext at rest or in transit. Encrypt sensitive data both when it is stored (at rest) and when it is transmitted over the network (in transit). This prevents unauthorized access and exposure. E. Always store secrets in a secure vault. Use dedicated secret management tools like HashiCorp Vault, AWS Secrets Manager, or Azure Key Vault to store and manage sensitive information securely. These tools provide mechanisms for access control, audit logging, and automatic rotation of secrets.

References:

Securing Secrets

HashiCorp Vault

AWS Secrets Manager

The git merge-file command is used to merge changes from a specified file into the working directory file. This is particularly useful when you have a separate file with bug fixes and you need to incorporate those fixes into your production code. The command takes three files: the base file, the current file, and the file with changes. It then merges the changes into the current file.

Example usage:

bash

Copy code

git merge-file

References:

Git Documentation - git merge-file

Cisco DevNet Associate Certification Guide

The diff command is used to compare the contents of two files and display the differences. The -u option stands for "unified" and shows the differences in a unified format, which includes the lines that differ between the two files along with a few lines of context.

When running the command diff -u file1.txt file2.txt, it compares the two files and shows the differences between them.

References:

GNU Diffutils: Unified Format