Question

Given the network address 145.20.0.0, find the class ,the block ,and the range of the address

Answer 1

Answer:

Class - Class B

Range - 145.20.1.0 - 145.20.255.255

Explanation:

The first octet of the network address is 145 which falls between 128 - 191 of a class B address.

E.g. Class A: 1 - 126

Class B: 128 - 191 (It falls in this here)

Class C: 192 - 223

Class D: 224 - 239

Class E: 240 - 255

Range: With the inclusion of the network address: 145.20.1.0, and the broadcast address: 145.20.255.255, the range will be from 145.20.1.0 to 145.20.255.255, because the first two octets - 145. and 20. are part of the network address.

This means that only the last two octets i.e .0 and .0, out of the four octets in 145.20.0.0 can be used.

I'm rusty so I can't remember what the block is supposed to be.