Module 2

Question 1

Is an attribute associated with a piece of data that tells a computer system how to interpret its value.

Answer 1

Data Type

Question 2

Specifies the size and
type of variable values, and it has no additional methods.

Answer 2

Primitive data types

Question 3

Are called reference types because they refer to objects.

Answer 3

Non-primitive data types

Question 4

Can store whole numbers from -128 to 127.

Answer 4

Byte

Question 5

Can store whole numbers from -32768 to 32767

Answer 5

Short

Question 6

Can store whole numbers from
-2147483648 to 2147483647.

Answer 6

Int

Question 7

Can store whole numbers from -
9223372036854775808 to 9223372036854775807.

Answer 7

Long

Question 8

Can store fractional numbers from 3.4e−038 to 3.4e+038. Note that you should end the value with an
“f”:

Answer 8

Float

Question 9

Can store fractional numbers from
1.7e−308 to 1.7e+308.

Answer 9

Double

Question 10

Can only take the values true or false:

Answer 10

Booleans

Question 11

Used to store a single character. The character must be surrounded by single quotes, like ‘A’ or ‘c’:

Answer 11

Characters

Question 12

Is used to store a sequence of
characters (text).

Answer 12

String

Question 13

Any constant value which can be assigned to the variable

Answer 13

Literal/Constant

Question 14

Used to represent a decimal, binary, or hexadecimal value.

Answer 14

Integer Literals

Question 15

Composed of a sequence of decimal digits followed by either a decimal fraction, a decimal
exponent, or both.

Answer 15

Floating-point Literals

Question 16

Have only two values, true or false.

Answer 16

Boolean literals

Question 17

Represented as a single character
surrounded by single quotes.

Answer 17

Character Literals

Question 18

Represent multiple characters and are enclosed
by double quotes.

Answer 18

String Literals

Question 19

A name which is associated with a value that can be changed.

Answer 19

Variables

Question 20

Constitute the basic building block to any programming language.

Answer 20

Operators

Question 21

Are used in mathematical expressions in the same way that they are used in algebra.

Answer 21

Arithmetic Operators

Question 22

Also known as Comparison Operators are used to check for relations like equality, greater than, less than. They return Boolean result after the comparison.

Answer 22

Relational
Operators

Question 23

Also known as Logical Operators are used to perform logical “AND”, “OR” and “NOT” operation, i.e. the function similar to AND gate and OR gate in digital electronics.

Answer 23

Boolean Operators

Question 24

Used to assign values to a variable. The left side operand is a variable and the right side operand of the assignment operator is a value.

Answer 24

Assignment Operators