Question 1

The f:ajax element's ________ attribute specifies a space-separated list of element ids-the values of these elements are submitted as part of the Ajax request.
A)execute.
B)render.
C)send.
D)display.

Accepted Answer

The "execute" attribute of the f:ajax element specifies a space-separated list of element ids. The values of these elements are submitted as part of the Ajax request. Therefore, this is the best choice for the described scenario.

Question 2

The ________ annotation allows you to inject a DataSource into a managed bean.
A)@Resource.
B)@DataSource.
C)@Database.
D)None of the above.

Accepted Answer

The @Resource annotation allows dependency injection of a DataSource into a managed bean in Java.

Question 3

The ________ enables the asynchronous exchanges with the web server that make Ajax applications so responsive.
A)HttpRequestObject.
B)XMLHttpRequest.
C)XMLHttpRequestObject.
D)None of the above.

Accepted Answer

C

Question 4

Ajax separates the user interaction portion of an application from its server interaction,enabling both to proceed ________.
A)synchronously.
B)asynchronously in parallel.
C)without any interaction whatsoever.
D)None of the above.

Accepted Answer

Ajax allows user interactions and server interactions to occur asynchronously, meaning they can happen independently and in parallel without waiting for each other.

Question 5

Which of the following is true?
A)You should maintain a separate database connection for each client request.
B)You should maintain a connection pool that allows the server to manage a limited number of database connections and share them among requests.
C)You should never connect to databases from web apps.
D)None of the above.

Accepted Answer

Maintaining a separate database connection for each client request (option A) is not efficient and can lead to resource depletion. Connecting to databases from web apps (option C) is necessary for many web applications. Option B is the best choice as it allows for efficient management of database connections and prevents resource waste, while still allowing for database connectivity in a web app. Therefore, the best choice is B.

Question 6

The f:ajax element's ________ attribute specifies a space-separated list of element ids for the elements that should be updated via partial page updates.
A)execute.
B)render.
C)send.
D)display.

Accepted Answer

The "render" attribute of the f:ajax element specifies a space-separated list of element IDs for the elements that should be updated via partial page updates. It allows developers to define which parts of the page should be updated when an Ajax call is made. The "execute" attribute, on the other hand, specifies which component(s) on the page should be processed during a post request. The "send" attribute is not a valid attribute of the f:ajax element. The "display" attribute is also not a valid attribute of the f:ajax element.

Question 7

The ________ element displays a collection's data in tabular format.
A)h:table.
B)h:collection.
C)h:dataTable.
D)None of the above.

Accepted Answer

The h:dataTable is specifically designed to display data in a tabular format by mapping each row of data to a row element in the table and each column of data to a column element in the table. The h:table element is a generic table that can be used for layout purposes and does not provide the same functionality as the h:dataTable. The h:collection element is used to display a collection of objects in various formats, but not specifically in a table format.

Quiz 30: Ajax-Enabled Jsf Web Applications

The f:ajax element's ________ attribute specifies a space-separated list of element ids-the values of these elements are submitted as part of the Ajax request.

The ________ annotation allows you to inject a DataSource into a managed bean.

The ________ enables the asynchronous exchanges with the web server that make Ajax applications so responsive.

Ajax separates the user interaction portion of an application from its server interaction,enabling both to proceed ________.

Which of the following is true?

The f:ajax element's ________ attribute specifies a space-separated list of element ids for the elements that should be updated via partial page updates.

The ________ element displays a collection's data in tabular format.