Rigorous Ajax Test - 44+ MCQs: Ajax Quiz: Test Your Expertise with Asynchronous JavaScript and XML

1. Which attribute is used to set the content type of an Ajax request?

contentType

type

dataType

requestType

2. How does the 'CORS' policy impact Ajax requests?

It ensures the request is executed synchronously

It restricts requests to the same origin for security reasons

It allows cross-origin requests without any restrictions

It defines custom headers for cross-origin requests

3. Which attribute is used to set a timeout for an Ajax request?

timeout

delay

asyncTimeout

requestTimeout

4. What role does the 'withCredentials' property play in Ajax requests?

It specifies whether credentials should be included in cross-origin requests

It defines the content type of the request

It sets the timeout for the request

It determines the request method

5. What role does the 'onreadystatechange' event play in Ajax?

It triggers the Ajax request

It defines the response type

It handles the server response

It monitors the change in the ready state of the request

6. Which method is used to cancel an ongoing Ajax request?

abort()

cancel()

stop()

terminate()

7. What is the role of the 'onabort' event in Ajax?

To handle errors during the request

To initiate an Ajax request

To monitor the change in the ready state of the request

To execute code when the request is aborted

8. What is the purpose of the same-origin policy in Ajax?

To restrict requests to a different domain for security reasons

To enable cross-origin resource sharing

To validate the content type of Ajax responses

To prevent caching of Ajax requests

9. What is the purpose of the 'crossOrigin' property in the 'Image' object in Ajax?

To handle errors during the request

To define the response type

To facilitate cross-origin requests for images

To track the progress of the data transfer

10. What is the purpose of the 'async' attribute in the XMLHttpRequest open method?

To specify the request method

To set the request headers

To indicate whether the request should be asynchronous or not

To define the response type

11. Which HTTP method is commonly used in Ajax for retrieving data from the server?

GET

POST

PUT

DELETE

12. What is the purpose of the XMLHttpRequest property 'responseText' in Ajax?

To store the HTML content of the current page

To store the raw server response as a string

To store the content type of the server response

To store the URL of the current page

13. What is the purpose of the XMLHttpRequest property 'responseType' in Ajax?

To define the request method

To set the content type of the request

To specify the type of data expected in the response

To indicate whether the request should be asynchronous or not

14. Which JavaScript function is commonly used to parse JSON data received in an Ajax response?

parseXML()

decodeJSON()

evalJSON()

JSON.parse()

15. What is the role of the Ajax callback function?

To define the HTML structure of the page

To handle the server response after an asynchronous request

To initiate an Ajax request

To set up the initial configuration of XMLHttpRequest

16. What does Ajax stand for?

Asynchronous JavaScript and XML

Advanced JavaScript and XML

Ajax is not an acronym

Automated JavaScript and XML

17. Which method is used to initiate an Ajax request in JavaScript?

startRequest()

triggerAjax()

executeAsync()

send()

18. Which status code indicates a successful Ajax request?

200 OK

404 Not Found

500 Internal Server Error

302 Found

19. In Ajax, what does the term 'asynchronous' refer to?

Simultaneous execution of multiple functions

Executing code in a sequential manner

Delegating tasks to a separate thread

Performing tasks without waiting for the completion of previous ones

20. In Ajax, what is the purpose of the XMLHttpRequest method 'getAllResponseHeaders'?

To retrieve the content of the server response

To obtain the response headers as a string

To extract the URL of the current page

To validate the status of the request

Ajax MCQ Test 3