1
Q
What is an octet?
A
8 bits = 1 Octet = 1 byte
2
Q
How to convert a decimal into a binary number?
A
Subtract it into the 128 64 32 16 8 4 2 1 range.
3
Q
Convert 42 into binary.
A
128 = 0 64 = 0 32 = 1 16=0 8=1 4=0 2=1 1=0 So: 00101010
4
Q
Convert 10111011 into decimal.
A
128+0+32+16+8+0+2+1=187 IF THERE IS A 1 as the last binary digit the decimal is always ODD if a 0 then EVEN decimal.
5
Q
What is the highest the first octet can be of an IPv4 Class C address?
A
223 as that is the maximum value for a Class C IP address.
