network media

Network Media

Flow of Data

Sent along BUS in bits (16,32 or 64, depending on type)
Sent to NIC buffer, small section of RAM on the NIC
MAU (part of NIC) turns bits into electrical signals
NIC sends bits across network
NIC at other end receives data and puts in computers RAM

Bits, Bytes, Parity

Bit – binary digit (0 or 1), smallest unit of information used
Byte – group of bits (8)
Parity – error checking, 8th bit usually for parity check
Always 0 – space parity/no parity
Always 1 – mark parity
Even number of 1’s – even parity
Odd number of 1’s – odd parity
Parity calculated when transmitted and checked when received
Both computers must use same parity system

Transmission Speed

Speed calculated by Bit Rate
Expressed in bits per second (Bps)
High-speed transmission abbreviated to kilobits per second (Kbs)
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