Question

1) How many kilobits are there if you have 2¹⁶ bits?

2) How many bits are required if you need 24 unique bit strings?

3) Assume 4-bit strings. You want to turn on bit 3. What mask would you use? Give your answer as a bit string.

4) What is log₂ 4^5?

Answer 1

1. a Kilo is 1024.. Hence 216/1024 = 0.21kilobits.

2.
1 bit can represet 2 strings. 0 or 1.
Similarly, 2 bits can represent 4 strings and so on..
5 bits can represent 32 strings.. hence 5 bits.

3.
num & 1000 (AND number with mask 1000)

4.
5.49185309633