What does AJAX stand for?

• Advanced JavaScript and XML
• Asynchronous JavaScript and XML
• Automated Java Application Extension
• Asynchronous Java App Exchange

Which JavaScript object is used to send AJAX requests?

• JSON
• AJAXObject
• XMLHttpRequest
• WebRequest

Which method is used to open a connection in AJAX?

• connect()
• open()
• initialize()
• begin()

What method sends the request to the server?

• load()
• sendRequest()
• post()
• send()

What does readyState == 4 indicate?

• Error
• Server timeout
• Request completed
• Request started

What is the main purpose of AJAX?

• Data encryption
• Asynchronous data transfer
• Form validation
• UI design

Which HTTP method is commonly used with AJAX for sending data?

• GET
• FETCH
• POST
• PUT

Which JavaScript object is used to make AJAX requests?

• XMLHttpRequest
• AjaxEngine
• HttpHandler
• DOMRequest

Which function is triggered when an AJAX request completes successfully?

• onOpen
• onSuccess
• onComplete
• onreadystatechange

What does the 'readyState' value of 4 indicate in AJAX?

• Request not sent
• Request received
• Request processing
• Request finished and response ready

What is the purpose of JSON Web Tokens (JWT) in AJAX requests?

• Compress data
• Authorize users
• Cache responses
• Format HTML

Which header is typically used to send JWT in an AJAX request?

• X-JWT
• Authorization
• Auth-Token
• JWT-Header

How can you monitor file upload progress in AJAX?

• By using onprogress event
• By using onerror event
• By using onsubmit event
• By using onloadstart only

What method is used to cancel an AJAX request in jQuery?

• $.ajax.cancel()
• xhr.abort()
• $.stop()
• $.ajax.stop()

Which HTTP status code indicates a CORS issue?

• 200
• 403
• 401
• 0