Deck 4: Explore Icons and Decision-Making Controls

Question 1

Never offer a default selection, as it complicates user input.

Answer 1

False

Question 2

RadioButton controls are usually used together in a ____, causing only one RadioButton to be selected at a time.

A) GroupControl
C) RadioGroup
B) MultiButton
D) Selector

Answer 2

C

Question 3

RadioButton controls are circular in shape, while CheckBox controls are square.

Answer 3

True

Question 4

Java automatically indents control structures to make them easy to identify.

Question 5

A toast notification is an easy way to inform the user of a failed data validation.

Question 6

Launcher icons form the first impression of your app on prospective users in the Android Market.

Question 7

Each icon used in an app should come in ____ size(s).

A) one
C) four
B) two
D) six

Question 8

A toast notification communicates messages to the user.

Question 9

Logical operators are used to combine smaller logical and relational operators.

Question 10

The statement 6<=6 is true.

Question 11

The ____ property can center a control horizontally as well as position it at other places on the screen.

A) elastic
C) rubber band
B) gravity
D) stretch

Question 12

A ____ is a triplet of three colors which encodes different colors.

A) controlled color code
C) standard color encoding
B) hexadecimal color code
D) triple-coded color

Question 13

Launcher icons should be intricate and conservative to have a memorable impact.

Question 14

The following condition is valid: (6 || ticketPrice) > (450.45 == "vacation").

Question 15

Decision-making statements in Java allow you to test ____ and perform different operations depending on the results of that test.

A) conditions
C) security
B) data integrity
D) icons

Question 16

____ graphics are best to use for icon design because the images can be scaled without loss of detail.

A) Composite
C) Scanned
B) Raster
D) Vector-based

Question 17

The ____ change(s) the spacing around each object in your layout.

A) borders
C) cellpadding
B) margins
D) cellspacing

Question 18

The icon used to start your app is called the ____.

A) boot icon
C) master icon
B) launcher icon
D) starter icon

Question 19

A(n) ____ control always operates independently, therefore selecting it will never deselect any other controls.

A) CheckBox
C) SingleSelect
B) EachButton
D) TextView

Question 20

The recommended prefix for a launcher icon is ____.

A) ic_launcher
C) launch_icon
B) ic_start
D) start_icon

Question 21

The statements that execute when an if statement is true are enclosed in ____.

A) [ and ]
C) | and |
B) { and }
D) begin and end

Question 22

A ____ is a fundamental control structure used in computer programming.

A) choice point
C) decision structure
B) code block
D) logic structure

Question 23

You test for a(n) ____________________ being true or false and change the flow of what happens in a program based on the user's input.

Question 24

The most common mistake with an if statement is using the ____ instead of the equals operator.

A) assignment operator
C) greater than operator
B) compareTo method
D) less than operator

Question 25

For a extra high-density screen, the pixel size of an icon should be ____________________ (state as number x number).

Question 26

Strings in Java are compared for equality by using the ____.

A) = operator
C) compareTo method
B) == operator
D) equals method

Question 27

To compare the lexicographical order of two strings, use the ____.

A) < operator
C) compareTo method
B) > operator
D) equals method

Question 28

You must use ____ to compare primitive values of the same type.

A) byte analysis
C) relational operators
B) logical operators
D) static methods

Question 29

The resulting value of the expression "sears".compareTo("chicago") is ____.

A) equal to 0
C) less than 0
B) greater than 0
D) unknown

Question 30

The method to test a checked property is the ____ method.

A) getChecked()
C) checked()
B) isChecked()
D) setChecked()

Question 31

The operator for "equal to" is ____.

A) =
C) !=
B) ==
D) <=

Question 32

When displayed, a Toast notification uses ____ to display the message.

A) half of the screen
C) one line
B) just enough room
D) the whole screen

Question 33

To set an app's launcher icon to an image called myLaunchIcon. png, the code to insert into the manifest is ____________________.

Question 34

____________________ controls are used to select and deselect an option.

Question 35

When an if statement is inside another if statement, the inner if statement is considered to be ____.

A) folded
C) nested
B) internal
D) stacked

Question 36

The method call to make to display a toast notification is Toast.____.

A) alert
C) showText
B) makeText
D) toastNotify

Question 37

A toast notification ____.

A) always fades after one second
B) automatically fades after a set amount of time
C) never goes away
D) requires a button push to fade

Question 38

When more than one condition is tested in an if statement, it is called a(n) ____.

A) compound condition
C) linked condition
B) expanded condition
D) multicondition

Question 39

When you publish an app in the Android Market, you must provide an icon of size ____________________ (state as number x number) as the display icon in the Market.

Question 40

If you have one set of instructions to execute when a condition is true and another set of instructions if the same condition is false, you use a(n) ____ statement.

A) if
C) while
B) if-else
D) switch

Question 41

Let the String variable a be set to the value "Boston". The value of the expression
a.equals("boston") is ____________________.

Question 42

When two Strings are compared, they are ordered ____________________.

Question 43

The isChecked method makes use of the ____________________ property of the RadioButton or CheckBox control.

Question 44

The process of verifying that a value is not a typo or some other type of mistake is called ____________________.

Question 45

The color code for black is ____________________.

Question 46

The truth value of the expression !(false && (true || !false) && (!false || !true)) is ____________________.

Question 47

Instead of eye-balling the controls on the user interface for alignment, you can use the ____________________ tool to create equal spacing around controls.

Question 48

A toast message is best used for ____________________ messages.

Question 49

The code to display the short toast message "Hi mom" is _________________________________________________________________.

Question 50

The condition necessary to test if a variable stockPrice is below $0.30 is ____________________.