GWT Mock Test

This section presents you various set of Mock Tests related to GWT. You can download these sample mock tests at your local machine and solve offline at your convenience. Every mock test is supplied with a mock test key to let you verify the final score and grade yourself.

GWT Mock Test IV

Q 1 - Which of the following widget is the base class for panels that contain only one widget?

Answer : B

Explaination

SimplePanel is the base class for panels that contain only one widget.

Q 2 - 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 3 - Which of the following GWT widget represents a simple panel that makes its contents focusable?

Answer : D

Explaination

FocusPanel widget represents a simple panel that makes its contents focusable, and adds the ability to catch mouse and keyboard events.

Q 4 - Which of the following GWT widget wraps its contents in an HTML <FORM> element?

Answer : B

Explaination

FormPanel widget represents a panel that wraps its contents in an HTML <FORM> element.

Q 5 - Which of the following GWT widget represents a panel that can pop up over other widgets?

Answer : C

Explaination

PopupPanel widget represents a panel that can pop up over other widgets. It overlays the browser's client area (and any previously-created popups).

Q 6 - Which of the following GWT widget represents a form of popup that has a caption area at the top and can be dragged by the user?

Answer : D

Explaination

DialogBox widget represents a form of popup that has a caption area at the top and can be dragged by the user. Unlike a PopupPanel, calls to PopupPanel.setWidth(String) and PopupPanel.setHeight(String) will set the width and height of the dialog box itself, even if a widget has not been added as yet.

Q 7 - Which of the following is correct about GWT event handling mechanism?

A - GWT provides a event handler model similar to Java AWT or SWING User Interface frameworks.

B - GWT provides a list of interfaces corresponding to various possible events.

C - A class wishing to receive events of a particular type implements the associated handler interface and then passes a reference to itself to the widget to subscribe to a set of events.

D - All of the above.

Answer : D

Explaination

All of the above options are correct.

Q 8 - Using which of the following, a custom widget can be created?

A - Create a widget by extending Composite Class.

B - Create a widget using GWT DOM API in JAVA.

C - Use JavaScript and wrap it in a widget using JSNI.

D - All of the above.

Answer : D

Explaination

All of the above options are correct.

Q 9 - Which of the following is correct about GWT UiBinder?

A - The UiBinder is a framework designed to separate Functionality and View of User Interface.

B - The UiBinder framework allows developers to build gwt applications as HTML pages with GWT widgets configured throughout them.

C - The UiBinder framework makes easier collaboration with UI designers who are more comfortable with XML, HTML and CSS than Java source code.

D - All of the above.

Answer : D

Explaination

All of the above options are correct.

Q 10 - Which of the following is correct about GWT UiBinder?

A - The UIBinder provides a declarative way of defining User Interface.

B - The UIBinder seperates the programmic logic from UI.

C - The UIBinder is similar to what JSP is to Servlets.

D - All of the above.

Answer : D

Explaination

All of the above options are correct.

Q 11 - Which of the following is correct about GWT RPC?

A - RPC, Remote Procedure Call is the mechansim used by GWT in which client code can directly executes the server side methods.

B - GWT RPC is servlet based.

C - GWT RPC is asynchronous and client is never blocked during communication.

D - All of the above.

Answer : D

Explaination

All of the above options are correct.

Q 12 - Which of the following is correct about GWT RPC?

A - Using GWT RPC Java objects can be sent directly between the client and the server (which are automatically serialized by the GWT framework).

B - Server-side servlet is termed as service.

C - Remote procedure call that is calling methods of server side servlets from client side code is referred to as invoking a service.

D - All of the above.

Answer : D

Explaination

All of the above options are correct.

Q 13 - Which of the following is not the core components of GWT RPC?

A - A remote service (server-side servlet) that runs on the server

B - Client code to invoke that service.

C - Java data objects which will be passed between client and server.

D - Database

Answer : D

Explaination

Database is not a core component of GWT RPC.

Q 14 - 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 15 - Which of the following is the way using which you can internationalize a GWT application?

A - Static String Internationalization

B - Dynamic String Internationalization

C - Localizable Interface

D - All of the above.

Answer : D

Explaination

All of the above options are correct.

Q 16 - Which tag of *.gwt.xml is used to support internationalization in GWT application?

A - extend-property

B - property

C - value

D - None of the above.

Answer : A

Explaination

extend-property tag with attribute name set as locale and values as language specific locale, say de for german locale.

Q 17 - GWT client and server both serialize and deserialize data automatically so developers are not required to serialize/deserialize objects and data objects can travel over HTTP.

A - true

B - false

Answer : A

Explaination

GWT client and server both serialize and deserialize data automatically so developers are not required to serialize/deserialize objects and data objects can travel over HTTP.

Q 18 - Which of the following internationalization technique uses standard Java properties files to store translated strings and parameterized messages, and strongly-typed Java interfaces are created to retrieve their values?

A - Static String Internationalization

B - Dynamic String Internationalization

C - Localizable Interface

D - None of the above.

Answer : A

Explaination

Static String Internationalization is most prevalent and requires very little overhead at runtime; is a very efficient technique for translating both constant and parameterized strings;simplest to implement. Static string internationalization uses standard Java properties files to store translated strings and parameterized messages, and strongly-typed Java interfaces are created to retrieve their values.

Q 19 - In which of the following internationalization technique host page contains the localized strings therefore, applications are not required to be recompiled when we add a new locale?

A - Static String Internationalization

B - Dynamic String Internationalization

C - Localizable Interface

D - None of the above.

Answer : B

Explaination

Dynamic String Internationalization is very flexible but slower than static string internationalization. Host page contains the localized strings therefore, applications are not required to be recompiled when we add a new locale. If GWT application is to be integrated with an existing server-side localization system, then this technique is to be used.

Q 20 - Which of the following logger logs to stdout and logged messages can only be seen in Development Mode in the DevMode window.

A - SystemLogHandler

B - DevelopmentModeLogHandler

C - ConsoleLogHandler

D - PopupLogHandler