BE/B Eng Bachelor of Engineering Computer Engineering 1

Question 1

What is the primary function of the ALU (Arithmetic Logic Unit) in a CPU?

Accepted Answer

To perform arithmetic and logical operations on data

Answer

The ALU performs all arithmetic (addition, subtraction) and logical (AND, OR, NOT) operations on binary data as directed by the control unit.

Question 2

In computer architecture, what is cache memory?

Accepted Answer

A small, fast memory close to the CPU that stores frequently accessed data

Answer

Cache memory is a small, high-speed SRAM buffer between the CPU and main memory that reduces latency by storing frequently or recently accessed data and instructions.

Question 3

What does pipelining in a CPU refer to?

Accepted Answer

Overlapping the execution of multiple instructions by dividing processing into stages

Answer

CPU pipelining divides instruction execution into discrete stages (fetch, decode, execute, writeback) so multiple instructions can be in different stages simultaneously, improving throughput.

Question 4

In binary arithmetic, what is the two's complement of 0110 (representing +6)?

Accepted Answer

1010

Answer

Two's complement of 0110: invert all bits to get 1001, then add 1 to get 1010, which represents -6 in two's complement notation.

Question 5

What is virtual memory in an operating system?

Accepted Answer

A technique that allows programs to use more memory than physically available by using disk space

Answer

Virtual memory abstracts physical RAM by using a page file on disk, giving each process the illusion of a large contiguous address space regardless of actual RAM size.

BE/B Eng Bachelor of Engineering Practice Test

BE/B Eng Bachelor of Engineering Practice Test

BE/B Eng Bachelor of Engineering Computer Engineering 1