BSCS Computer Architecture and Organization

Question 1

What does the CPU's ALU stand for?

Accepted Answer

Arithmetic Logic Unit

Answer

The Arithmetic Logic Unit performs arithmetic (addition, subtraction) and logical (AND, OR, NOT) operations.

Question 2

Which memory type loses its contents when power is removed?

Accepted Answer

RAM

Answer

RAM (Random Access Memory) is volatile, meaning its contents are lost when the computer is powered off.

Question 3

What is the purpose of the program counter (PC) register?

Accepted Answer

Holds the memory address of the next instruction

Answer

The Program Counter holds the address of the next instruction to be fetched and executed.

Question 4

Which cache level is typically the smallest and fastest in a modern CPU?

Accepted Answer

L1 cache

Answer

L1 cache is the closest to the CPU core, offering the lowest latency but smallest capacity.

Question 5

What does pipelining achieve in a CPU?

Accepted Answer

Overlaps execution of multiple instructions

Answer

Pipelining overlaps different stages (fetch, decode, execute) of multiple instructions to improve throughput.

BSCS - Bachelor of Science in Computer Science Practice Test