True/False
Indicate whether the
statement is true or false.
|
|
|
1.
|
AJAX primarily relies on JavaScript and HTTP requests to exchange data between a
client computer and a Web server.
|
|
|
2.
|
AJAX cannot exchange data using standard text strings.
|
|
|
3.
|
You can use the XMLHttpRequest
object to directly access content on another domain’s server.
|
|
|
4.
|
The ability for one Web server to access Web pages and data on another Web
server is the foundation of the World Wide Web.
|
|
|
5.
|
The response returned from a server can be much more involved than the original
request that generated it.
|
Multiple Choice
Identify the
choice that best completes the statement or answers the question.
|
|
|
6.
|
AJAX gets its name from the fact that ____ is often the format used for
exchanging data between a client computer and a Web server.
a. | ActiveX | c. | XML | b. | DOM | d. | HTTPS |
|
|
|
7.
|
The XMLHttpRequest object uses ____ to exchange data
between a client computer and a Web server.
|
|
|
8.
|
By combining the ____
object with DHTML techniques, you can update and modify individual portions of your Web page
with data received from a Web server.
a. | AjaxRequest | c. | HttpRequest | b. | XMLHttpRequest | d. | XMLRequest |
|
|
|
9.
|
____ is an XML format that allows Web sites to publish content that can be read
by other Web sites.
|
|
|
10.
|
You can use a server-side script as a ____ to access data from another
domain.
a. | proxy | c. | router | b. | switch | d. | firewall |
|
|
|
11.
|
The purpose of the ____ policy is to prevent malicious scripts from modifying
the content of other windows and frames and prevent the theft of private browser information and
information displayed on secure Web pages.
a. | privacy | c. | delegation | b. | proxy | d. | same origin |
|
|
|
12.
|
A(n) ____ is a software component that resides on a Web server.
a. | AJAX request | c. | HTTP service | b. | Web service | d. | DHTML service |
|
|
|
13.
|
Every Web page is identified by a unique address called the ____.
a. | host string | c. | URL | b. | host | d. | HTTP |
|
|
|
14.
|
The term ____ refers to the application, usually a Web browser, which makes the
request.
a. | HTTP server | c. | HTTP URL | b. | host | d. | HTTP client |
|
|
|
15.
|
The term ____ is another name for a Web server and refers to a computer that
receives HTTP requests and returns responses to HTTP clients.
a. | URL | c. | HTTP server | b. | HTTP client | d. | host |
|
|
|
16.
|
The term ____ refers to a computer system that is being accessed by a remote
computer.
a. | protocol | c. | client | b. | host | d. | URL |
|
|
|
17.
|
HTTP client requests and server responses are both known as HTTP ____.
a. | messages | c. | strings | b. | scripts | d. | queries |
|
|
|
18.
|
____ define information about the request or response message and about the
contents of the message body.
a. | Queries | c. | Headers | b. | Tags | d. | Labels |
|
|
|
19.
|
____ refers to the temporary storage of data for faster access.
a. | Caching | c. | Shadowing | b. | Salting | d. | Hashing |
|
|
|
20.
|
One generic header that requires special mention for AJAX applications is the
____ header, which specifies how a Web browser
should cache any server content it receives.
a. | Caching | c. | CacheLevel | b. | Cache-Control | d. | Cached |
|
|
|
21.
|
____ is a technology that allows programming objects to be easily reused with
any programming language that supports Microsoft’s Component Object Model.
a. | AJAX | c. | DOCs | b. | DHTML | d. | ActiveX |
|
|
|
22.
|
The ____ is an architecture for cross-platform development of client/server
applications.
a. | Component Object Model | c. | RSS | b. | Dynamic HTML | d. | HTTPS |
|
|
|
23.
|
After you instantiate an XMLHttpRequest object, you use the ____ method with the instantiated XMLHttpRequest object to specify the request method
(such as GET or POST) and URL.
a. | alive() | c. | instantiate() | b. | create() | d. | open() |
|
|
|
24.
|
To improve performance, you should call the ____ method of the XMLHttpRequest object to cancel any existing HTTP
requests before beginning a new one.
a. | exit() | c. | cancel() | b. | abort() | d. | delete() |
|
|
|
25.
|
After you have defined the basic request criteria with the open() method, you use the ____ method with the
instantiated XMLHttpRequest object to submit
the request to the server.
a. | pass() | c. | send() | b. | request() | d. | call() |
|
|
|
26.
|
A(n) ____ request stops the processing of the JavaScript code until a response
is returned from the server.
a. | asynchronous | c. | domain | b. | global | d. | synchronous |
|
Completion
Complete each
statement.
|
|
|
27.
|
____________________ (AJAX) refers to a combination of technologies that allow
Web pages displayed on a client computer to quickly interact and exchange data with a Web server
without reloading the entire Web page.
|
|
|
28.
|
Unlike standard HTTP requests, which usually replace the entire page in a Web
browser, the ____________________ object can be used to request and
receive data without reloading a Web page.
|
|
|
29.
|
The process of asking for a Web page from a Web server is known as a(n)
____________________.
|
|
|
30.
|
The Web server’s reply (which might consist of the requested Web page or a
message about that Web page) is known as the ____________________.
|
|
|
31.
|
____________________ is a set of rules that defines how requests are made by an
HTTP client to an HTTP server, and how responses are returned from an HTTP server to an HTTP
client.
|
Matching
|
|
|
Match each item with a statement below: a. | ECMAScript Edition 3 | f. | Web
services | b. | DHTML | g. | JavaScript programs | c. | XMLHttpRequest object | h. | Apache HTTP Server | d. | same origin policy | i. | Microsoft Internet Information
Services | e. | proxy |
|
|
|
32.
|
Restricts how JavaScript code in one window or frame accesses a Web page in
another window or frame on a client computer
|
|
|
33.
|
The most popular Web server software used on the Internet
|
|
|
34.
|
Makes Web pages dynamic by combining JavaScript, XHTML, CSS, and the Document
Object Model
|
|
|
35.
|
Provide services and data in the form of methods and properties
|
|
|
36.
|
The most recent version of the JavaScript language
|
|
|
37.
|
The second most popular Web server
|
|
|
38.
|
The key component of AJAX
|
|
|
39.
|
Someone or something that acts or performs a request for another thing or
person
|
|
|
40.
|
Client-side scripting programs
|
Short Answer
|
|
|
41.
|
Briefly describe Google Suggest.
|
|
|
42.
|
How does the same origin policy affect AJAX?
|
|
|
43.
|
Why should you run AJAX from a Web server?
|
|
|
44.
|
What are the steps to create an AJAX script?
|
|
|
45.
|
Briefly describe the main characteristics of a Web page URL.
|
|
|
46.
|
Briefly describe TCP/IP.
|
|
|
47.
|
Describe the HTTP GET method.
|
|
|
48.
|
What is the format of the three-digit status codes returned from an HTTP
server?
|
|
|
49.
|
What are the rules that your code should test for when instantiating an XMLHttpRequest object?
|
|
|
50.
|
How can you create an asynchronous request with JavaScript?
|