Networking Basics - Ethernet
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Ethernet
Set of network cabling & network access (CSMA/CD) protocol standards for logical bus topology computer networks invented by Xerox but now controlled by the 602.3 subcommittee of the IEEE
Fast Ethernet
100 Mbps Ethernet
Gigabit Ethernet
1000 Mbps Ethernet
Collision Domain
Area of an Ethernet network where collision can occur
Collision
Ethernet condition of multiple interfaces transmitted simultaneously
Hub
Physical Layer device that is a multiport repeater
Broadcast
Transmission addressed to all stations
Broadcast Domain
Area of network where a broadcast will be received by all stations
MAC Address
Media Access Control address; A unique identifying number assigning to most network devices
Carrier Sense Multiple Access With Collision Detection (CSMA/CD)
Ethernet’s media access control protocol
Back Off
To defer transmission
Frequency-Division Multiplexing
Combining transmission from multiple stations onto a single communications channel carrying multiple frequency
Bit Rate
Frequency at which bits pass a given physical/metaphorical point - measured in bps
bps
Bits per second
Bps
Bytes per second
Baud Rate
Number of signaling events per second
Wavelength
Length of a single cycle of a wave - measured by the distance between 1 peak or through a wave & the next
MAC Address
MAC address, sometimes referred to as a hardware / physical address, is a unique, 12-character alphanumeric attribute that is used to identify individual electronic device on a network
Decimal
Value in a base-10 numbering system
Nibble
Half a byte; 4 bits
Octet
1 byte; 8 bits
Set Bit
Binary number is represented by 1
Hexadecimal
Base-16 numbering system
Network Interface Card (NIC)
Hardware that connects to a computer to a network