CND1/Ch3: Fundamentals of LANs Flashcards
Table H-3: Today's most common types of Ethernet Table H-4: LAN MAC address terminology and features Definitions
(Types of Ethernet)
Speed - 10 Mbps/Alt name - 10 BASE-T/IEEE Std - 802.3/Cable type, Max length - Copper, 100m
Ethernet
(Types of Ethernet)
Speed - 100 Mbps/Alt name - 100BASE-TX/IEEE Std - 802.3u/Cable type, max length - Copper, 100m
Fast Ethernet
(Types of Ethernet)
Speed - 1000 Mbps/Alt name - 1000BASE-LX, 1000BASE-SX/IEEE Std - 802.3z/Cable type, max length - Fiber, 550m (SX), 5km (LX)
Gigabit Ethernet
(Types of Ethernet)
Speed - 100 Mbps/Alt name - 1000BASE-T/IEEE Std - 802.3ab/Cable type, max length - 100m
Gigabit Ethernet
(LAN Addressing Term or Feature Description)
Media Access Control. 802.3 (Ethernet) defines the MAC sublayer of IEEE Ethernet
MAC
(LAN Addressing Term or Feature Description)
Other names often used instead of MAC address. These terms describe the 6-byte address of the LAN interface card
Ethernet address, NIC address, LAN address
(LAN Addressing Term or Feature Description)
The 6-byte address assigned by the vendor making the card
Burned-in address
(LAN Addressing Term or Feature Description)
A term for a MAC that represents a single LAN interface
Unicast address
(LAN Addressing Term or Feature Description)
An address that means “all devices that reside on this LAN right now.”
Broadcast address
(LAN Addressing Term or Feature Description)
On Ethernet, a multicast address implies some subset of all devices currently on the Ethernet LAN
Multicast address
(Definition)
A name for the IEEE Gigabit Ethernet standard that uses four-pair copper cabling, a speed of 1000 Mbps (1 Gbps), and a maximum cable length of 100 meters
1000BASE-T
(Definition)
A name for the IEEE Fast Ethernet standard that uses two-pair copper cabling, a speed of a 100 Mbps, and a maximum cable length of 100 meters
100BASE-TX
(Definition)
The 10-Mbps baseband Ethernet specification using two pairs of twisted-pair cabling (Cat 3, 4, 5): One pair transmits and the other receives, IEEE 802.3, approx 100 m per segment
10BASE-T
(Definition)
An Ethernet cable that swaps the pair used for transmission on one device to pair used for receiving on the device on the opposite end of the cable
crossover cable
(Definition)
A media-access mechanism in which devices ready to transmit data first check the channel for a carrier
Carrier sense multiple access collision detect (CSMA/CD)
(Definition)
Generically, any communication in which two communicating devices can concurrently send and receive data
full duplex
(Definition)
Generically, any communication in which only one device at a time can send data
half duplex
(Definition)
A LAN device that provides a centralized connection point for LAN cabling, repeating any received electrical signal out all other ports, thereby creating a logical bus
hub
Layer 1 device - do not interpret the electrical signals as a frame of bits
(Definition)
The documentation and implementation of which wires inside a cable connect to each pin position in any connector
pinout
(Definition)
A field in a LAN header that identifies the type of header that follows the LAN header
Protocol Type field
(Definition)
An Ethernet that uses a hub, or even the original coaxial cabling, which results in the devices having to take turns sending data, sharing the available bandwidth
shared Ethernet
(Definition)
In Ethernet, a cable that connects the wire on pin 1 on one end of the cable to pin 1 one the other end of the cable, pin 2 on one end to pin 2 on the other end, etc
straight-through cable
(Definition)
A network device that filters, forwards, and floods Ethernet frames based on the destination address of each frame
switch
(Definition)
An Ethernet that uses a switch, and particularly not a hub, so that the devices connected to one switch port do not have to contend to use bandwidth available on another port
switched Ethernet
