To create and execute a basic API request in Postman:

Open Postman and click on the "New" button to create a new request.
Select "Request" from the options.
Name your request and save it to a collection.
In the request window, select the HTTP method (e.g., GET, POST, PUT, DELETE).
Enter the API endpoint URL.
Add any required headers or parameters.
Click on the "Send" button.
Postman will display the response from the server, including status code, response time, and the response body.

Collections in Postman are a way to group and organize related API requests. They help in managing and running multiple requests together and are useful for testing workflows and scenarios. To use collections:

Create a new collection by clicking the "New" button and selecting "Collection".
Name the collection and save it.
Add requests to the collection by creating new requests or moving existing ones into the collection.
You can also organize requests into folders within a collection for better structure.
Collections can be shared with team members for collaboration and can also be run as automated test suites using the Postman Runner.

Postman allows you to automate API testing by using its built-in scripting capabilities with JavaScript. You can write scripts to run before a request is sent (Pre-request Script) and after a response is received (Tests). Here's how to automate testing:

Write test scripts in the "Tests" tab of a request. For example:
javascript
Copy code
pm.test("Status code is 200", function () {
    pm.response.to.have.status(200);
});
pm.test("Response time is less than 200ms", function () {
    pm.expect(pm.response.responseTime).to.be.below(200);
});
Use the Postman Runner to execute a collection of requests with automated tests.
Integrate Postman with CI/CD tools to run tests automatically in your development pipeline.
Question 5: How do you handle authentication in Postman?
Answer: Postman supports various types of authentication methods to handle secured API endpoints. Here are the steps to handle authentication:

Open the request for which you need to set up authentication.
Go to the "Authorization" tab.
Select the authentication type from the dropdown menu (e.g., Basic Auth, Bearer Token, OAuth 2.0).
Enter the necessary credentials or tokens. For example:
For Basic Auth, enter the username and password.
For Bearer Token, paste the token in the respective field.
For OAuth 2.0, configure the token generation flow by providing the necessary URLs and client credentials.
Postman will include the necessary authorization headers in the request.

Postman is used for developing, testing, and documenting APIs.

Click on "New" and select "Request" to create a new API request.

Go to the "Authorization" tab and select the appropriate type of authorization.

Save a request by clicking the "Save" button and choosing a collection to store in it.

Use the Postman Collection Runner to run a collection of requests.