Chapter 6 Flashcards Preview

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Flashcards in Chapter 6 Deck (24):
1

NIC

(Network Interface Card) connects a computer to a computer network.

2

Modem

(Modulator/Demodulator) a device that modulates signals to encode and demodulates to decode.

3

Media converter

connects two dissimilar media types such as twisted pair with fiber optic cabling.

4

repeater

receives a signal and retransmits it at a power, or onto the other side of an obstruction, so that the signal can cover longer distances.

5

hub

a node with a number of links that greatly exceeds the average.

6

passive hub

joins wires from several stations in a star configuration

7

active hub

regenerates signals on the output side to keep the signal strong

8

collision domain

A physical region of a LAN in which data collisions can occur

9

intelligent hub

functions for network management, bridging, routing and switching.

10

bridge

connects two or more local area networks at layer 2.

11

switch

connecting multiple wires, allowing them to communicate simultaneously

12

multilayer switch

switches on OSI layer 2 like an ordinary network switch and provides extra functions on higher OSI layers.

13

content switch

distribute user requests to servers based on Layer 7 payload.

14

VLAN

(Virtual LAN) groups users by logical addresses into a virtual LAN through a switch or router.

15

trunking

provides network access to many clients by sharing a set of lines or frequencies

16

port mirroring

Cross connecting two or more ports on a network switch so that traffic can be simultaneously sent to a network analyzer or monitor connected to another port.

17

port authentication, port-based authentication

limits access to a specific port to just certain MAC addresses.

18

(STP) Spanning Tree Protocol

used by switches when multiple switches are used in the same network

19

PoE (Power over Ethernet)

safetly transfers power over Ethernet cabling

20

CSU/DSU

(Channel Service Unit/Data Service Unit) used to convert a digital signal from one frame format to another

21

router

used to move packets around a larger network

22

port speed

how fast a specific port on the router is able to send/receive data

23

firewall

used to prevent unauthorized packets into the network

24

ACL

(Access Control List) Rules for a firewall