Programming in PHP - UNIT V

What does AJAX stand for?

• Asynchronous Java and XML

• Asynchronous JavaScript and XML

• Automated Java and XML

• Asynchronous JSON and XML

Which JavaScript object is used to send an AJAX request?

• XMLHttpRequest

• AjaxRequest

• HttpRequest

• JSRequest

What is the correct way to send a GET request using XMLHttpRequest?

• xhr.open("POST", "data.php", true);

• xhr.send("GET", "data.php", true);

• xhr.open("GET", "data.php", true);

• xhr.fetch("GET", "data.php", true);

Which of the following is NOT an advantage of AJAX?

• Reduces server load

• Improves user experience

• Requires page refresh for every request

• Allows asynchronous data retrieval

Which of the following is used to handle responses in modern AJAX requests?

• xhr.onload

• xhr.sendResponse()

• xhr.execute()

• xhr.runResponse()

What is the role of the readyState property in an AJAX request?

• Specifies the HTTP method to use

• Defines the request headers

• Tracks the state of the request

• Sends the request to the server

Which JavaScript method is commonly used with AJAX for sending JSON data?

• JSON.parse()

• JSON.stringify()

• JSON.encode()

• JSON.convert()

Which PHP library is commonly used to create and manipulate images on the server?

• GD Library

• ImageMagick

• Both a and b

• None of the above

Which function is used to create a new blank image in PHP GD?

• imagecreatefromblank()

• imagecreate()

• newimage()

• generateimage()

What is the purpose of the header("Content-Type: image/png") function in PHP?

• It sets the image format for output

• It uploads the image to a database

• It compresses the image file

• It resizes the image