Chapter 3 Quiz

1. The error-checking code in an frame’s trailer is called a
5. When several hubs or switches must be connected, usually one device is used as the central connecting point, forming an
7. describes how data travels from computer to computer
8. packet frame headers acknowledgements, and retransmissions
9. The 802.11 wireless networking standard is also referred to as
12. direct link using a wireless bridge between two devices and is mostly used in WANs
14. sends digital signals in which each bit of data is represented by a pulse of electricity or light
15. wd
16. The extent to which signals in an Ethernet bus topology network are propagated is called a
17. cabling used to communicate between LANs or between hubs and switches
18. The path data travels between computers on a network is considered the
19. In most towns you can usually find a public Wi-Fi network, called a
20. uses thin strands of glass to carry pulses of light long distances and at high data rates

1. listen before send - must hear silence if two or more stations hear silence multiple stations may transmit at the same time if two or more stations transmit , a collision occurs and is detected by the NIC; all stations must retransmit
2. The arrangement of cabling and how cables connect one device to another in a network is considered the
3. is the term used when electricity bounces off the end of a cable and back in the other direction
4. most common media in LANs consists of four pairs of copper wiring twisted together
6. a continuous length of cable connecting one computer to another in daisy-chain fashion
10. uses analog techniques to encode binary 1s and 0s across a continuous range of values
11. is obsolete as a LAN medium but it is used as the network medium for Internet access via cable modem
13. an electrical component called a resistor that absorbs the signal instead of allowing it to bounce back