Question

q2) how many bytes are there in a terabyte? *
2^30
2^40
2^43

Explanation:

Step1: Recall data - size conversion

1 Kilobyte (KB) = $2^{10}$ bytes, 1 Megabyte (MB) = $2^{10}$ KB, 1 Gigabyte (GB) = $2^{10}$ MB, 1 Terabyte (TB)= $2^{10}$ GB.

Step2: Calculate bytes in a Terabyte

TB = $2^{10}\times2^{10}\times2^{10}\times2^{10}$ bytes. Using the rule of exponents $a^m\times a^n=a^{m + n}$, we have $2^{10+10 + 10+10}=2^{40}$ bytes.

Answer:

$2^{40}$ (the second option)