Chapter 6

Question 1

NIC

Answer 1

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

Question 2

Modem

Answer 2

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

Question 3

Media converter

Answer 3

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

Question 4

repeater

Answer 4

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.

Question 5

hub

Answer 5

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

Question 6

passive hub

Answer 6

joins wires from several stations in a star configuration

Question 7

active hub

Answer 7

regenerates signals on the output side to keep the signal strong

Question 8

collision domain

Answer 8

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

Question 9

intelligent hub

Answer 9

functions for network management, bridging, routing and switching.

Question 10

bridge

Answer 10

connects two or more local area networks at layer 2.

Question 11

switch

Answer 11

connecting multiple wires, allowing them to communicate simultaneously

Question 12

multilayer switch

Answer 12

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

Question 13

content switch

Answer 13

distribute user requests to servers based on Layer 7 payload.

Question 14

VLAN

Answer 14

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

Question 15

trunking

Answer 15

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

Question 16

port mirroring

Answer 16

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.

Question 17

port authentication, port-based authentication

Answer 17

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

Question 18

(STP) Spanning Tree Protocol

Answer 18

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

Question 19

PoE (Power over Ethernet)

Answer 19

safetly transfers power over Ethernet cabling

Question 20

CSU/DSU

Answer 20

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

Question 21

router

Answer 21

used to move packets around a larger network

Question 22

port speed

Answer 22

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

Question 23

firewall

Answer 23

used to prevent unauthorized packets into the network

Question 24

ACL

Answer 24

(Access Control List) Rules for a firewall