Ethernet Frame Format
64 bit preamble is sequence of alternating 1 and 0 for receiver synchronization with signal.
Every Ethernet adapter attached to a host has a unique 6-Byte address e.g. 8:0:2b:e4:b1:2 is 0001000:00000000:00101011:11100100:10110001:00000010
Ethernet standard defined by Xerox, DEC and Intel in 1978 uses 16 bit type field for demultiplexing to frame to higher level protocols. IEEE 802.3 standard uses this field to determine how long the frame is.
Maximum data payload is 1500 Byte.
Cyclic Redundancy Code (CRC-32) is used for error checking.
Postamble indicates end of frame.