Memory Units — Set 6

Correct Answer: B. Exabyte

EB is the standard abbreviation for Exabyte, a massive unit of data. It is equal to 1024 Petabytes. The amount of data generated daily across the globe is often estimated in Exabytes.

Correct Answer: B. Bit

A bit is a contraction of the words 'Binary Digit'. It can only take one of two values: 0 or 1. It is the core unit of all digital communication and processing.

Correct Answer: A. 8192

Since 1 KB is 1024 bytes and 1 byte is 8 bits, 1024 multiplied by 8 equals 8192 bits. This calculation shows the relationship between the two different levels of data grouping. It is useful for understanding low-level data transmission.

Correct Answer: B. Zettabyte

Zettabyte (ZB) is the unit that follows Exabyte in the standard sequence. One Zettabyte is equal to 1024 Exabytes. It is a unit used to describe the total scale of worldwide data.

Correct Answer: D. 64 bits

The correct answer is '64 bits'. Modern personal computers almost exclusively use a 64-bit word size. This allows the processor to handle larger numbers and more complex instructions in one go. Word size is a defining characteristic of a CPU's architecture.

Correct Answer: C. 10,48,576

There are 1024 Gigabytes in a Terabyte and 1024 Terabytes in a Petabyte. Multiplying 1024 by 1024 gives 1,048,576 Gigabytes. This shows how quickly the data volume increases across the hierarchy.

Correct Answer: B. None of the mentioned

The correct answer is 'None of the mentioned'. A lowercase 'b' always denotes bits, so Mb is the abbreviation for Megabit. An uppercase 'B' denotes Bytes, so MB is Megabyte. Internet speeds are usually marketed in Megabits per second (Mbps).

Correct Answer: B. Yottabyte

The Yottabyte is the highest unit officially defined by the International System of Units (SI). It is equivalent to 1024 Zettabytes. Larger terms like Brontobyte exist but are not yet formally standardized.

Correct Answer: C. 12

One byte is 8 bits, and half a byte (a nibble) is 4 bits. Adding 8 and 4 results in 12 bits for a total of 1.5 bytes. This demonstrates how data can be measured in non-integer byte values.

Correct Answer: B. 2^10

2 raised to the power of 10 equals 1024, which is the number of bytes in a Kilobyte. 2^20 represents a Megabyte, and 2^30 represents a Gigabyte. This binary math is the basis for all computing storage scales.