Question 1

What is a variable in micro:bit programming?

Accepted Answer

A named storage location for data values

Answer

A hardware component that displays output

Answer

A type of program loop

Answer

A function that performs calculations

Question 2

What is a valid variable name in micro:bit programming?

Accepted Answer

myVar

Answer

MyVar

Answer

my var

Answer

my_var

Question 3

What data types can be assigned to a variable in micro:bit programming?

Accepted Answer

Numbers, strings, and booleans

Answer

Numbers only

Answer

Strings only

Answer

Booleans only

Question 4

What symbol is used to assign a value to a variable in micro:bit programming?

Accepted Answer

=

Answer

+

Answer

:

Answer

-

Question 5

What is the scope of a variable in micro:bit programming?

Accepted Answer

The area of the program where the variable can be accessed

Answer

The memory location of the variable

Answer

The type of data assigned to the variable

Answer

The time when the variable was created

Question 6

What happens if a variable is not initialized with a value in micro:bit programming?

Accepted Answer

It will have a default value of 'undefined'

Answer

It will have a default value of 'null'

Answer

The program will crash

Answer

It will have a default value of '0'

Question 7

What is the difference between a local variable and a global variable in micro:bit programming?

Accepted Answer

A local variable is only accessible within the function or block of code where it is defined, while a global variable can be accessed from anywhere in the program

Answer

There is no difference between a local and global variable in micro:bit programming

Answer

A local variable is initialized with a value, while a global variable is not

Answer

A global variable is only accessible within the function or block of code where it is defined, while a local variable can be accessed from anywhere in the program

Question 8

What is the advantage of using variables in micro:bit programming?

Accepted Answer

It makes the code more flexible and easier to maintain

Answer

It improves the accuracy of program calculations

Answer

It makes the code run faster

Answer

It reduces the amount of memory used by the program

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