Question 1

Which of the following is false&#10;A) The XMLHttpRequest object carries out asynchronous requests.&#10;B) Browsers cache asynchronously requested files for faster access.&#10;C) The XMLHttpRequest can make a request to any server.&#10;D) The third argument to the XMLHttpRequest object's open method determines whether the request is asynchronous.

Accepted Answer

The XMLHttpRequest object is subject to the same-origin policy, which means it cannot make requests to any server unless CORS (Cross-Origin Resource Sharing) is properly configured on the server.

Question 2

The XMLHttpRequest object parses an XML response into a DOM tree and stores it in the ________ property.&#10;A) response&#10;B) responseXML&#10;C) xmlData&#10;D) responseTree

Accepted Answer

The XMLHttpRequest object stores the parsed XML response in the responseXML property, which contains the response as a DOM Document object.

Question 3

The name for Ajax was coined by ________ in ________.&#10;A) Jesse James Garrett, 2005&#10;B) Adaptive Path, 2003&#10;C) Microsoft, 1998&#10;D) None of the above.

Accepted Answer

Jesse James Garrett, who was a member of Adaptive Path, coined the term Ajax in 2005.

Question 4

Unlike in POST requests, in an HTTP GET request&#10;A) the request may not have parameters&#10;B) the request may have only a limited number of parameters&#10;C) the parameters are appended to the URL&#10;D) the parameters are sent separatelyo

Accepted Answer

The answer of Unlike in POST requests, in an HTTP...

Question 5

Which property or method is used to modify an attribute of an XML DOM element&#10;A) attribute&#10;B) the property with the same name as the attribute&#10;C) attributeValue&#10;D) setAttribute

Accepted Answer

The `setAttribute` method is used to modify or set the value of an attribute on an XML DOM element.

Question 6

Ajax toolkits solve which of the following problems&#10;A) cross-browser incompatibilies&#10;B) limited bandwidth availability&#10;C) application security&#10;D) compliance to web standards

Accepted Answer

Ajax toolkits help address cross-browser incompatibilities by providing a consistent API that works across different web browsers.

Question 7

When an XMLHttpRequest object receives a response from the server, it invokes a ________, which usually performs a ________ to display the retreived data.&#10;A) recursive function, browser reload&#10;B) anonymous function, browser redirect&#10;C) callback function, partial page update&#10;D) delayed function, database query

Accepted Answer

The XMLHttpRequest object uses a callback function to handle the server's response, and this function typically performs a partial page update to display the retrieved data without reloading the entire page.

Question 8

Ajax takes advantage of ________ scripting to make applications more responsive.&#10;A) server-side&#10;B) PHP&#10;C) client-side&#10;D) XML

Accepted Answer

Ajax uses client-side scripting to update parts of a web page asynchronously without reloading the entire page, making applications more responsive.

Question 9

If the code in a try block causes an exception, execution passes to ________.&#10;A) the next line of the try block&#10;B) the next function&#10;C) the corresponding catch block&#10;D) the corresponding error block

Accepted Answer

When an exception occurs in a try block, execution is transferred to the corresponding catch block designed to handle that specific exception.

Question 10

Ajax applications respond to user actions by making ________ requests to a web server.&#10;A) synchronous&#10;B) asynchronous&#10;C) contiguous&#10;D) asymmetric

Accepted Answer

Ajax applications make asynchronous requests to a web server, allowing web pages to update dynamically without reloading the entire page.

Deck 16: Ajax-Enabled Rich Internet Applications With Xml and Json