COMPUTER NETWORKING

TRANSPORT LAYER

TRANSMISSION CONTROL PROTOCOL TCP

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the decimal equivalent of an octet composed of all 1s?
A
255
B
111
C
100
D
11111111
Explanation: 

Detailed explanation-1: -The reason that the highest octet value is 255 is that IP addresses are given in bits, which are the power of 2. The maximum number you can write with bit notation is with 8 1’s or 11111111=255.

Detailed explanation-2: -Class A networks use a default subnet mask of 255.0.0.0 and have 0-127 as their first octet.

Detailed explanation-3: -255.255. 255.252 is a /30 network mask (or simply netmask), that is, the first 30 bits are used for the network prefix and the last 2 are use to identify the host.

There is 1 question to complete.