Ajax Quiz – Ajax Multiple Choice Questions and Answers: Here to take an Ajax Quiz? Then you are chosen the right website. In this article, the MCQ questions that are provided here are for AJAX Quiz for Beginners, the AJAX Multiple Choice Questions and Answers will let you know at which level you stood regarding your knowledge about AJAX Concept. Further, the AJAX Basics Quiz will not only provide the correct answers but let you know the overall score you will be securing once you answer the Ajax Online Quiz. Now, we urge you guys to take the AJAX MCQ online quiz and know whether you can answer these questions or not.
Ajax Quiz – Details
| Quiz Name | Ajax Quiz |
| Exam Type | MCQ (Multiple Choice Questions) |
| Category | Technical Quiz |
| Mode of Quiz | Online |
AJAX MCQ – Online Practice
1. What does AJAX stand for?
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a) Asynchronous JavaScript and XML
b) Advanced JavaScript and XHTML
c) Asynchronous JSON and XML
d) Automated JavaScript and XML
Answer: a) Asynchronous JavaScript and XML
Explanation: AJAX stands for Asynchronous JavaScript and XML, which is a technique used for creating fast and dynamic web pages without the need for reloading the entire page.
2. Which object is used to make an AJAX request?
a) XMLHTTPRequest
b) JSONRequest
c) HTTPRequest
d) AJAXRequest
Answer: a) XMLHTTPRequest
Explanation: The XMLHTTPRequest object is used to make an AJAX request. It is an API in JavaScript that enables client-side scripting to exchange data asynchronously with a web server.
3. What is the advantage of using AJAX in web development?
a) It reduces server load and network traffic
b) It simplifies the development process
c) It improves security
d) It enhances the user interface
Answer: a) It reduces server load and network traffic
Explanation: AJAX allows data to be retrieved from the server without reloading the entire web page. This reduces the server load and network traffic as only the required data is fetched from the server.
3. Which of the following HTTP methods is used for retrieving data in AJAX?
a) GET
b) POST
c) PUT
d) DELETE
Answer: a) GET
Explanation: The GET method is used for retrieving data in AJAX. It sends a request to the server to retrieve data, and the server responds with the requested data.
4. What is the purpose of the XMLHttpRequest.readyState property?
a) To determine the status of the AJAX request
b) To store the response data from the server
c) To store the request data sent to the server
d) To store the URL of the server
Answer: a) To determine the status of the AJAX request
Explanation: The XMLHttpRequest.readyState property is used to determine the status of
the AJAX request. It indicates the current state of the request, such as whether it is still being processed or has been completed.
5. What is the role of the onreadystatechange event in AJAX?
a) To specify the URL of the server
b) To specify the request data sent to the server
c) To specify the response data received from the server
d) To specify the function to be executed when the AJAX request status changes
Answer: d) To specify the function to be executed when the AJAX request status changes
Explanation: The onreadystatechange event is used to specify the function to be executed when the AJAX request status changes. It is triggered each time the readyState property changes.
6. Which of the following is an example of an AJAX framework?
a) React
b) Vue.js
c) jQuery
d) Angular
Answer: c) jQuery
Explanation: jQuery is an example of an AJAX framework. It provides a simple API for making AJAX requests and handling the response data.
7. Which of the following is NOT a disadvantage of using AJAX?
a) It can cause cross-site scripting (XSS) vulnerabilities
b) It can make the web application slower
c) It can be difficult to debug
d) It can make the web application less accessible
Answer: b) It can make the web application slower
Explanation: Using AJAX can actually make the web application faster by reducing the need for full-page reloads. The other options are potential disadvantages of using AJAX.
8. What is the purpose of the AJAX responseXML property?
a) To store the response data as an XML document
b) To store the response data as a JSON object
c) To store the response data as a string
d) To store the status code of the AJAX request
Answer: a) To store the response data as an XML document
Explanation: The AJAX responseXML property is used to store the response data as an XML document. This is useful when the response data is in XML format and needs to be parsed or manipulated.
9. Which of the following is NOT a data format used in AJAX?
a) JSON
b) XML
c) HTML
d) CSV
Answer: d) CSV
Explanation: CSV (Comma Separated Values) is not a data format used in AJAX. The other options are commonly used data formats for exchanging data between the client and the server.
10. What is the purpose of the AJAX beforeSend function?
a) To specify the request headers to be sent to the server
b) To specify the data to be sent to the server
c) To specify the function to be executed before the AJAX request is sent
d) To specify the function to be executed after the AJAX request is completed
Answer: c) To specify the function to be executed before the AJAX request is sent
Explanation: The AJAX beforeSend function is used to specify the function to be executed before the AJAX request is sent. This can be used to set custom request headers or perform other tasks before the request is sent.
11. Which of the following is a disadvantage of using AJAX for search engine optimization (SEO)?
a) AJAX can improve the SEO of a website
b) AJAX can have a negative impact on the SEO of a website
c) AJAX has no effect on the SEO of a website
d) AJAX is not used for SEO purposes
Answer: b) AJAX can have a negative impact on the SEO of a website
Explanation: AJAX can have a negative impact on the SEO of a website if the content is not properly indexed by search engines. This can be addressed by using techniques such as pre-rendering or server-side rendering.
12. Which of the following is an example of a jQuery AJAX method?
a) ajax()
b) getJSON()
c) load()
d) All of the above
Answer: d) All of the above
Explanation: ajax(), getJSON(), and load() are all examples of jQuery AJAX methods. They provide a simple API for making AJAX requests and handling the response data.
13. What is the purpose of the AJAX error function?
a) To handle errors that occur during the AJAX request
b) To specify the data to be sent to the server
c) To specify the function to be executed before the AJAX request is sent
d) To specify the function to be executed after the AJAX request is completed
Answer: a) To handle errors that occur during the AJAX request
Explanation: The AJAX error function is used to handle errors that occur during the AJAX request. This can include network errors, server errors, or errors in the response data.
14. Which of the following is NOT a common use case for AJAX?
a) Real-time chat applications
b) Auto-complete search fields
c) Social media sharing buttons
d) Complex form submissions
Answer: c) Social media sharing buttons
Explanation: Social media sharing buttons typically do not require the use of AJAX. The other options are common use cases for AJAX.
15. What is the purpose of the AJAX timeout property?
a) To specify the maximum amount of time to wait for a response from the server
b) To specify the data to be sent to the server
c) To specify the function to be executed before the AJAX request is sent
d) To specify the function to be executed after the AJAX request is completed
Answer: a) To specify the maximum amount of time to wait for a response from the server
Explanation: The AJAX timeout property is used to specify the maximum amount of time to wait for a response from the server. This can be useful in preventing long-running requests from affecting the user experience.
16. Which of the following HTTP methods is NOT supported by all browsers for AJAX requests?
a) GET
b) POST
c) PUT
d) DELETE
Answer: c) PUT
Explanation: PUT is not supported by all browsers for AJAX requests. However, it can be used with AJAX in some browsers with the help of frameworks or libraries.
17. Which of the following is a technique used to mitigate CORS (Cross-Origin Resource Sharing) issues in AJAX requests?
a) JSONP (JSON with Padding)
b) CSRF (Cross-Site Request Forgery) protection
c) XSRF (Cross-Site Request Forgery) protection
d) None of the above
Answer: a) JSONP (JSON with Padding)
Explanation: JSONP is a technique used to mitigate CORS issues in AJAX requests. It involves wrapping the response data in a function call that can be executed in the client-side code.
18. Which of the following is a benefit of using AJAX for form submissions?
a) Improved security
b) Improved performance
c) Improved user experience
d) All of the above
Answer: d) All of the above
Explanation: Using AJAX for form submissions can provide several benefits, including improved security, improved performance, and improved user experience.
19. Which of the following is a disadvantage of using AJAX for file uploads?
a) Increased network usage
b) Limited browser support
c) Difficult to implement
d) All of the above
Answer: d) All of the above
Explanation: Using AJAX for file uploads can have several disadvantages, including increased network usage, limited browser support, and difficulty in implementation. It is usually better to use a dedicated file upload tool for this purpose.
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