Understanding IP Addressing [Part-2]
Content covered: 

Classful Network Architecture

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Mandeep Singh mandeepsingh 28 Dec 2016 11:29 am

Why you have not subtract 2 from NIDs of B and C class?

Shashank Shekhar shashankshek 28 Dec 2016 03:48 pm

Because he already have eliminated the fixed bits from couting the total network ID i.e:

For Class B:

fixed bits- 2(1,0)

total network bits- 16

total manipulative bits = 16-2

So, Total Network ID's = 214

Similarly for class C, total network id's = 221.

sardendu sardendubharti 28 Dec 2016 11:13 pm

becuase he mentioned that the two NID adress were eliminated only for class A network, because the first and last is used for noIP/invalidIP  and loopback adress respectively 

Arun Rajput arunrajput 30 Dec 2016 06:02 pm

Range of class D is 224-239.

mohamedrafi (not verified) 3 Feb 2017 12:26 pm

is class B range from 1-126 or from 1-125. In last video you said it was from 1-125 and in the above it is said as 1-126?