EmSAT Computer Science 2

Question 1

What is the difference between a compiler and an interpreter?

Accepted Answer

A compiler translates the entire program at once, while an interpreter translates and executes line by line

Answer

A compiler translates the entire source code into machine code before execution, while an interpreter translates and executes code one statement at a time during runtime.

Question 2

What does the Boolean expression (TRUE AND FALSE) OR TRUE evaluate to?

Accepted Answer

TRUE

Answer

(TRUE AND FALSE) = FALSE; FALSE OR TRUE = TRUE. The OR operator returns TRUE if at least one operand is TRUE.

Question 3

What is a variable in programming?

Accepted Answer

A named storage location in memory that holds a value which can be modified

Answer

A variable is a named reference to a memory location that stores data which can be read and modified during program execution.

Question 4

Which network topology connects all devices to a single central hub?

Accepted Answer

Star topology

Answer

In a star topology, all devices connect to a central hub or switch. If the central device fails, the entire network is affected, but individual device failures do not affect others.

Question 5

What is the function of RAM in a computer?

Accepted Answer

Temporary storage for data and instructions currently being processed

Answer

RAM (Random Access Memory) provides fast, temporary storage for data and instructions that the CPU is actively using. Its contents are lost when power is turned off (volatile memory).

EmSAT Practice Test

EmSAT Practice Test

EmSAT Computer Science 2