What is the rotational latency of a hard disk? MCQ with Answer and Explanation

Explanation:
Standard DVD-ROM holds 4.7 GB (single layer) or 8.5 GB (dual layer). But the most common is 4.7 GB.

Explanation:
A bit is the smallest unit of data in computing and can have a value of 0 or 1. A byte is 8 bits, a kilobyte is 1024 bytes, and a nibble is 4 bits.

Explanation:
While pen drives come in various capacities, common sizes are powers of 2 (8, 16, 32, 64, 128, 256 GB). 120 GB is not a standard power-of-two size, though non-standard sizes might exist; typically, 120 GB is more common in SSDs, not pen drives. However, 128 GB is common. For exam, 120 GB is unusual, but I'd say it's not a standard capacity. I'll go with D as not typical.