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difference between network id and host id??

what is the difference between net ID and host ID??
in a class C IP address say, 192.52.56.8 the first 3 octets denote the net ID while the last octet shows the host ID. what are the 2 used for ?

again in a class B IP address say, 172.52.36.5 the first 2 octets show the net ID while the last 2 denote the host ID.... what is the significance of the netID and hostID???

i got this definition for host ID frm google search, but i still didn't understand ...
5th Jul

Answers (1)

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aw come on.... an IT pro and you don't know??
what's the "network" portion of the address for? come on I think you know....
what's the "host" portion of the address for? this should be easy if you got the one above.

what's the subnet mask for? if you can answer the 2 above, then you ought to know what's it for....
6th Jul
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