IT220 Unit 5 assignment

Frantzy Senat IT220
Unit 5 Assignment : Ethernet LANs Review
Chapter Review Questions:
1. C
2. D
3. B
4. A
5. B
6. E
7. D
8. A & D
9. A & C
10. A & D
11. C
12. C & D
13. C
14. A & C
15. A
16. A & B
17. D
18. C
19. B
20. C
Key Terms:
Ethernet LANs: collection of devices which use IEEE Ethernet standards at the physical and data link layers, so that the devices can send Ethernet frames to each other
802.3: the name of the original IEEE Ethernet standard, as well as the overall base name of all IEEE Ethernet LAN working committees
Fast Ethernet: informal name for one particular standard, originally defined formally as 802.3u, which was the first Ethernet standard to surpass the original 10-Mbps speed to run at 100 Mbps
Gigabit Ethernet: informal name for one particular standard, defined formally in 802.3z (for fiber) and 802.3ab (for UTP), with a speed of 1 Gbps
Autonegotiation: a process defined by the IEEE so that nodes on the same Ethernet link can exchange messages for the purpose of choosing the best speed and duplex option that both nodes support
Ethernet frame: includes the Ethernet data link layer header and trailer plus the data and other higher-layer headers that need to be sent through the LAN
MAC address: data link layer address, 48 bits in length, usually written as 12 hexadecimal digits and used to represent different devices connected to a LAN
MAC address table: on a LAN switch, a table of addresses and local switch ports that the switch uses when making its decision of where to forward Ethernet frames that arrive at the switch