GWT Online Quiz

Following quiz provides Multiple Choice Questions (MCQs) related to GWT. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.

Q 1 - Which of the following is correct about GWT?

A - Application written in GWT is cross-browser compliant.

B - GWT automatically generates javascript code suitable for each browser.

C - GWT is open source and is licensed under the Apache License version 2.0.

D - All of the above.

Answer : D

Explaination

All of the above options are correct.

Q 2 - What is the purpose of 'script' tag in *.gwt.xml file in GWT?

A - This specifies the names of source folders which GWT compiler will search for source compilation.

B - This specifies the place in your project where static resources referenced by your GWT module, such as CSS or images, are stored.

C - This automatically injects the external JavaScript file located at the location specified by src.

D - This automatically injects the external CSS file located at the location specified by src.

Answer : C

Explaination

'script' tag in *.gwt.xml file automatically injects the external JavaScript file located at the location specified by src.

Q 3 - Which of the following is true about Host Page in GWT?

A - The host page is used to invoke actual GWT application.

B - A typical HTML host page for an application might not include any visible HTML body content at all but it is always expected to include GWT application via a <script.../> tag.

C - Both of the above.

D - None of the above.

Answer : C

Explaination

The most important public resource is host page which is used to invoke actual GWT application. A typical HTML host page for an application might not include any visible HTML body content at all but it is always expected to include GWT application via a <script.../> tag.

Q 4 - Which of the following class is the superclass of all user-interface classes?

A - UIObject

B - Widget

C - Panel

D - None of the above.

Answer : A

Explaination

The class UIObject is the superclass for all user-interface objects.

Q 5 - Which of the following gwt widget represents a standard check box?

Answer : A

Explaination

CheckBox widget represents a standard check box. This class also serves as a base class for RadioButton.

Q 6 - Which of the following gwt widget represents a rich text editor?

Answer : C

Explaination

RichTextArea widget represents a rich text editor.

Q 7 - Which of the following panel lays all of its widgets out in a single horizontal column?

Answer : C

Explaination

HorizontalPanel widget represents a panel that lays all of its widgets out in a single horizontal column.

Q 8 - Which of the following GWT widget represents a simple panel that wraps its contents in a scrollable area?

Answer : C

Explaination

ScrollPanel widget represents a simple panel that wraps its contents in a scrollable area.

Q 9 - Which of the following interface a java data object should implement so that it can be transferred over the wire in GWT RPC?

Answer : A

Explaination

A java data object should implement isSerializable interface so that it can be transferred over the wire in GWT RPC.

Q 10 - Which of the following logger logs to the javascript console, which is used by Firebug Lite (for IE), Safari and Chrome.

A - SystemLogHandler

B - DevelopmentModeLogHandler

C - ConsoleLogHandler

D - PopupLogHandler

Answer : C

Explaination

ConsoleLogHandler logs to the javascript console, which is used by Firebug Lite (for IE), Safari and Chrome.

gwt_questions_answers.htm