MAH-CET 2026 — Computer PYQ

The correct option is (d) All of the above(option 1, option 2 and option 3).

Detailed Explanation

To understand why all options are correct, let us look at the standard decimal metric hierarchy for computer memory storage:

• $1\text{ Kilobyte (KB)}=10^3\text{ Bytes}$

• $1\text{ Megabyte (MB)}=10^6\text{ Bytes}$

• $1\text{ Gigabyte (GB)}=10^9\text{ Bytes}$

• $1\text{ Terabyte (TB)}=10^{12}\text{ Bytes}$

• $1\text{ Petabyte (PB)}=10^{15}\text{ Bytes}$

• $1\text{ Exabyte (EB)}=10^{18}\text{ Bytes}$

• $1\text{ Zettabyte (ZB)}=10^{21}\text{ Bytes}$

Let's evaluate each option mathematically:

• Evaluating Option (a): Direct definition shows that:

  $$\text{1 Exabyte}=10^{18}\text{ Bytes}$$

  Hence, statement (a) is true.

• Evaluating Option (b): A Zettabyte is the next higher unit after an Exabyte. Dividing a Zettabyte by $10^3$ (one thousand) gives:

  $$\frac{1\text{ ZB}}{10^3}=\frac{10^{21}\text{ Bytes}}{10^3}=10^{18}\text{ Bytes}=1\text{ EB}$$

  Hence, statement (b) is true.

• Evaluating Option (c): A Petabyte is the unit immediately preceding an Exabyte. Multiplying a Petabyte by $10^3$ (one thousand) gives:

  $$1\text{ PB}\times 10^3=10^{15}\text{ Bytes}\times 10^3=10^{18}\text{ Bytes}=1\text{ EB}$$

  Hence, statement (c) is true.