DADT02 APP Quiz Topic 2

What is the main purpose of a named constant in programming?

• To store temporary values

• To create a fixed value that cannot be changed

• To act as a placeholder for variables

• To optimize memory usage

How is a named constant typically declared in Java?

• Using var

• Using final

• Using constant

• Using static

What does the scope of a variables determine?

• The data type of the variable

• The lifespan and accessibility of the variable

• The memory allocation of the variable

• The value assigned to the variable

Which of the following scopes is NOT a valid in programming?

• Local scope

• Global scope

• Function scope

• Unlimited scope

Named constants can have their values changed during program execution.

• True

• False

Define a named constant and provide an example of its declaration in any programming language

Which of the following is a primitive data type in Java?

• String

• Array

• int

• Object

What type of data can a boolean variable store?

• Text values

• Decimal numbers

• True or false values

• Large integers

What is the purpose of garbage collection in programming?

• To allocate memory for variables

• To clean up unused objects and free memory

• To sort data in memory

• To delete all variables after a program ends

How can you access an instance variable if it has the same name as a local variable in Java?