300-435 Question 3
Select 3Your team is tasked with automating the configuration of a large-scale Cisco SD-Access deployment. You decide to use Python and Cisco DNA Center APIs to achieve this. Which key concepts of network programmability should you consider to ensure the solution is scalable and maintainable?
- A
Use REST-based APIs to interact programmatically with Cisco DNA Center
- B
Implement hard-coded IP addresses and credentials within your Python scripts for faster execution
- C
Utilize data models such as YANG to ensure consistency in network configuration
- D
Incorporate version control for your Python scripts to track changes effectively
- E
Rely solely on CLI-based automation for granular control over the network configuration
Show answer and explanation
Correct answers: A, C, D
Explanation
To ensure scalability and maintainability in network automation, leveraging REST APIs, structured data models (e.g., YANG), and software development best practices such as version control are critical. Hard-coding sensitive information like IP addresses or relying solely on CLI-based methods introduces risks and reduces the efficiency of the solution.
- A. Correct.
REST-based APIs are a foundational element of network programmability, enabling programmatic interactions with platforms like Cisco DNA Center.
- B. Incorrect.
Hard-coding IP addresses and credentials is a poor practice as it reduces maintainability and poses security risks.
- C. Correct.
Data models like YANG provide a structured way to define and enforce configuration consistency across network devices.
- D. Correct.
Version control systems like Git are essential for tracking changes, enabling collaboration, and ensuring maintainability of code.
- E. Incorrect.
CLI-based automation is less scalable and lacks the abstraction and flexibility provided by modern APIs and data models.