The fastest hardware device in a computer is ________.

Correct option is B

Ans. (b) Cache memory
Sol. Cache memory is the fastest hardware device in a computer because it is a small, high-speed memory located inside or very close to the processor. It stores frequently accessed data and instructions to reduce the time needed to fetch data from the main memory (RAM), thereby enhancing processing speed.
Explanation of each option:
· (a) USB port – Incorrect, as USB ports are used for data transfer but are much slower than cache memory.
· (b) Cache memory – Correct answer. It is the fastest memory, providing quick access to frequently used data.
· (c) Laser printer – Incorrect, as a printer is an output device and does not contribute to computational speed.
· (d) Processor – Incorrect, as the processor executes instructions, but it relies on cache memory for faster access to data.