POST: Creates a new resource (e.g., creating a new user).
PUT: Updates or replaces an existing resource (e.g., updating a user profile).
Stages: Code → Build → Test → Deploy → Monitor
Example: A code commit triggers automated tests and deployment to staging.
Used for automation scripts.
Used for configuration management.
Handles UI logic for APIs.
Tracks code changes. Example: git commit, git push to save and share changes.
Tools: Jenkins, GitHub Actions, Docker, Selenium
Waterfall: Sequential, rigid approach (e.g., construction).
Agile: Iterative, flexible approach (e.g., software startups).
Benefit: Ensures consistent environments across all systems.
Definition: Orchestrates containers and automatically scales app pods based on demand.
Used to define and run multi-container Docker applications using docker-compose.yml.
Example 1: Automate router configuration with Python.
Example 2: Parse network logs using Python.
Definition: Bridge for communication between systems.
Example: A weather app calling an API for live data.
Example: json.loads() to read API response.
Waterfall: Sequential, rigid (e.g., construction).
Agile: Iterative, flexible (e.g., software startups).
Spiral: Adds risk analysis.
Iterative: Develops in small chunks.
Styles: REST, GraphQL, SOAP.
Example: REST for web apps, GraphQL for mobile apps.
Sync: Immediate response (e.g., login).
Async: Delayed response (e.g., video processing).
Functions: GET, POST, PUT, DELETE.
Example: GET for fetching a product list.
Tools: Jenkins, GitHub Actions, Docker, Selenium.
Answer:
An API (Application Programming Interface) is a set of rules and protocols that allows different software applications to communicate with each other. APIs define the methods and data formats that systems use to request and exchange information.
Types of API Architecture Styles:
Example API Request (REST API):
import requests
response = requests.get('https://api.example.com/data')
data = response.json()Answer:
CI/CD (Continuous Integration and Continuous Delivery/Deployment) are practices in software development where code changes are automatically tested and deployed through automated pipelines.
CI/CD Pipeline Stages:
CI/CD Tools:
Roles in CI/CD:
Answer:
Cisco DevNet is a developer program that provides resources for software developers, DevOps engineers, and network engineers to build applications for Cisco platforms.
Answer:
Git is a version control system that helps track code changes and collaborate with others. GitHub is a cloud-based platform that hosts Git repositories and enables collaboration between developers.
Basic Git Commands:
Answer:
STLC (Software Testing Life Cycle) is a set of phases that defines the testing process in software development. It helps ensure the quality of the product.
STLC Phases:
Answer:
Requirements in Software Engineering: These include functional and non-functional requirements, which define the system's behavior, performance, and security.
Types of Testing Pipelines:
Roles in Testing:
Answer:
V-Model: It is a development model where each phase of development is directly associated with a corresponding testing phase. It is sequential and rigid.
DevOps Model: It is a collaborative approach between development and operations teams to automate and streamline the software delivery process. It promotes continuous integration, delivery, and feedback.
Terraform: Creates infra.
Ansible: Configures it.
Benefit: Same environment on all systems.
Definition: Orchestrates containers.
Example: Auto-scales app pods.
Python is a versatile, high-level programming language known for its readability and ease of use. It is widely used in automation tasks due to its simplicity and extensive library support.
for i in range(5):
print(i)
def greet(name):
print(f"Hello, {name}")
try:
x = 5 / 0
except ZeroDivisionError:
print("Cannot divide by zero")
Linux is a Unix-like, open-source operating system known for its stability and security. It uses a hierarchical file system with directories like /home, /bin, /usr, and /etc.
Linux assigns permissions to files and directories using three categories:
chmod 755 myfile.txt
A virtual lab is a simulated environment for practicing Python and Linux without physical hardware. You can set it up using tools like VirtualBox or VMware.
Virtual labs help learners practice safely and flexibly, offering an environment to test various configurations.
Linux file system hierarchy is structured with the root directory / at the top, containing essential directories like /home, /bin, and /etc.
ls: Lists files in a directory cp: Copies files or directories mv: Moves or renames files rm: Removes files or directories
DevNet is Cisco's developer network, providing resources and tools for network automation and software development. It supports building scalable network applications using APIs, SDKs, and sandboxes.
DevNet offers tools like Cisco DNA Center, Ansible, and the DevNet Sandbox for hands-on experience with network automation. It enables developers to integrate network APIs and build solutions efficiently.
DevNet provides forums, webinars, GitHub repositories, and expert blogs. Community engagement helps developers share solutions, discuss best practices, and solve real-world problems in network automation and development.
The Waterfall model is structured and sequential, best for well-defined projects. The Agile model is flexible and iterative, suitable for projects with evolving requirements.
Design patterns are reusable solutions to common problems. Examples include:
Version control manages changes to code. Git helps with staging, committing, and branching. GitFlow is a workflow that improves collaboration by defining roles for branches.
Unit testing ensures individual units of code function as expected. Here's an example:
import unittest
def add(a, b):
return a + b
class TestMathOperations(unittest.TestCase):
def test_add(self):
self.assertEqual(add(1, 2), 3)
if __name__ == '__main__':
unittest.main()
REST is an architectural style for designing networked applications using standard HTTP methods (GET, POST, PUT, DELETE).
Use Python's requests module or tools like Postman to send API requests. Example:
import requests
response = requests.get('https://api.example.com/data')
print(response.json())
API authentication secures access to APIs. Methods include API keys, OAuth, and Basic Authentication.
Synchronous APIs block the client until a response is received, while asynchronous APIs allow other operations to continue during the wait. Asynchronous APIs are better for large-scale applications.
REST, SOAP, and GraphQL differ in flexibility, performance, and complexity. REST is widely used for web services, while GraphQL allows clients to request specific data.