Data storage units MCQ - Practice Questions with Answers

In the binary-based storage scale commonly used in such computer-awareness questions, 1 petabyte equals 1024 terabytes. Therefore, 1024 TB is the correct match for 1 PB. 1024 bytes is only 1 kilobyte in the same scale, far smaller than a petabyte. 1024 MB equals 1 GB, and 1024 GB equals 1 TB. Since the question asks specifically for 1 PB, the next lower unit must be terabyte, giving 1024 TB.

A bit is the smallest unit of data in computing. It can represent one of two possible states, usually 0 or 1. A nibble is larger because it consists of 4 bits. A byte is still larger, normally made up of 8 bits. KB, or kilobyte, is much larger than a byte and is used to measure storage capacity. Since every larger data unit is built from bits, the smallest unit among the given choices is the bit.

In the binary-style storage scale commonly used in such exam questions, each larger unit is 1024 times the previous unit. A zettabyte is one step above an exabyte, so 1 ZB is taken as 1024 EB. Saying 1024 ZB would make the unit equal to a larger quantity of itself, which is not a conversion. Kilobyte and gigabyte are much smaller units; 1024 KB equals 1 MB, and 1024 GB equals 1 TB, not 1 ZB.