Wednesday, April 26, 2017

CN summary topic 2

IP (Internet Protocols) Address
is an identifier for a computer or device on a TCP/IP network.

 The format of an IP address is a 32-bit numeric address written as four numbers separated by periods. Each number can be zero to 255. For example, 1.160.10.240 could be an IP address.

 Class A - supports 16 million hosts on each of 126 networks
Class B - supports 65,000 hosts on each of 16,000 networks
Class C - supports 254 hosts on each of 2 million networks

 Subnet
A portion of a network that shares a common address component.

 Subnet Mask
is a mask used to determine what subnet an IP address belongs to.

 NIC (Network Interface Card)
is an expansion board you insert into a computer so the computer can be connected to a network.

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