Question 1

AVD stands for __________________.

Accepted Answer

Android Virtual Device

Question 2

The AppCompatActivity's direct superclass is:

Accepted Answer

A)   MainActivity.
B)   Activity.
C)   AppCompat.
D)   Main. B

Question 3

In order to test an app on a device, we need to:

Accepted Answer

A)   do nothing.
B)   download a driver for the device.
C)   disconnect the device from the computer.
D)   download a device for the driver. B

Question 4

An XML element can have only 0 or 1 attribute.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following defines a valid String element?

Accepted Answer

A) < strings name="my_name">20dp< /strings> B) < string name="my_name">20dp< /string> C) < name string="my_name">16dp< /name> D) < my_name name="string">16dp< /my_name>

Question 6

Which of the following code snippets defines a valid dimension element?

Accepted Answer

A) < dimens name="my_margin">20dp< /dimens> B) < dimen name="my_margin">20dp< /dimen> C) < name dimen="my_margin">16dp< /name> D) < my_margin name="dimen">16dp< /my_margin>

Question 7

XML elements can be nested.

Accepted Answer

A) True 
 B)False

Question 8

We can access the activity_main.xml resource file from the layout directory using the expression ___________.

Accepted Answer

The answer of We can access the activity_main.xml resource file...

Question 9

The int parameter of the setContentView( int ) method represents:

Accepted Answer

A)   a count.
B)   a random integer.
C)   a resource.
D)   0 or 1.

Question 10

The name of the directory where we should place the icon file for the app is:

Accepted Answer

A)   drawable.
B)   raw.
C)   mipmap.
D)   values.

Question 11

We can test an app on a device only in vertical orientation.

Accepted Answer

A) True 
 B)False

Question 12

What hex number represents green?

Accepted Answer

A)   FF0000
B)   00FF00
C)   0000FF
D)   000000

Question 13

Which class do we use to send some output to Logcat?

Accepted Answer

A)   Logcat
B)   System
C)   Print
D)   Log

Question 14

Android apps can be distributed via:

Accepted Answer

A)   the App Store.
B)   the Android Market.
C)   Google Play.
D)   the Apple Store.

Question 15

It is possible to set up breakpoints throughout the code so that we can debug the app.

Accepted Answer

A) True 
 B)False

Question 16

It is possible to preview a GUI XML file inside the environment without running the app.

Accepted Answer

A) True 
 B)False

Question 17

The colors.xml file contains ___________ constants.

Accepted Answer

The answer of The colors.xml file contains ___________ constants....

Question 18

A color has been defined in colors.xml using < color name="myColor">#33FD42< /color>. How do you use it?

Accepted Answer

A)   @color/myColor
B)   @color/33FD42
C)   color/myColor
D)   color/33FD42

Question 19

The name of the XML attribute that we use to specify that an app will run in horizontal orientation only is:

Accepted Answer

A)   android:orientation.
B)   android:screen.
C)   android:screenOrientation.
D)   orientation.

Question 20

The red, green, and blue values of a gray shade are all equal. Including black and white, how many shades of gray are there?

Accepted Answer

A)   8
B)   256
C)   16
D)   16.7 million

Exam 1: Basics of Android: Hello World

AVD stands for __________________.

The AppCompatActivity's direct superclass is:

In order to test an app on a device, we need to:

An XML element can have only 0 or 1 attribute.

Which of the following defines a valid String element?

Which of the following code snippets defines a valid dimension element?

XML elements can be nested.

We can access the activity_main.xml resource file from the layout directory using the expression ___________.

The int parameter of the setContentView( int ) method represents:

The name of the directory where we should place the icon file for the app is:

We can test an app on a device only in vertical orientation.

What hex number represents green?

Which class do we use to send some output to Logcat?

Android apps can be distributed via:

It is possible to set up breakpoints throughout the code so that we can debug the app.

It is possible to preview a GUI XML file inside the environment without running the app.

The colors.xml file contains ___________ constants.

A color has been defined in colors.xml using < color name="myColor">#33FD42< /color>. How do you use it?

The name of the XML attribute that we use to specify that an app will run in horizontal orientation only is:

The red, green, and blue values of a gray shade are all equal. Including black and white, how many shades of gray are there?