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CSci 11 > Computer Networks II > Flashcards

Computer Networks II Flashcards

1
Q

measurement of the width or capacity of the communication channel

A

bandwidth

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2
Q

it means how much information can move across the communication channel in a given amount of time

A

bandwidth

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3
Q

4 categories of bandwidth

A

voiceband,
medium band,
broadband,
baseband

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4
Q

also known as low bandwidth that is used for standard telephone communication

A

voiceband

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5
Q

effective for transmitting text documents but not for high-quality audio and video

A

voiceband

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6
Q

used in special leased lines to connect midrange computers and mainframes as well as to transmit data over long distances and is capable of very high-speed data transfer

A

medium band

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7
Q

widely used for DSL, cable, and satellite connections to the internet

A

broadband

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8
Q

widely used to connect individual computers that are located to one another

A

baseband

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9
Q

this bandwidth can only carry single signal at a time

A

baseband

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10
Q

rules for the exchange of information

A

protocols

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11
Q

unique numeric address

A

IP address (internet protocol address)

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12
Q

converts text-based addresses to IP addresses

A

domain name server (DNS)

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13
Q

before the message is sent, it is reformatted or broken down into small parts called “”

A

packets

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14
Q

connects two or more computers so that they can exchange information and share resources

A

networks

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15
Q

any device that is connected to a network

A

node

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16
Q

a node that requests and uses resources available from other nodes

A

clients

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17
Q

a node that shares resources with other nodes

A

server

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18
Q

5 types of server

A
  1. application server
  2. database server
  3. file server
  4. printer server
  5. web server
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19
Q

specialized server that manages the resources, such as user accounts, for an entire network

A

directory server

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20
Q

any computer system connected to a network that provide access to its resources

A

host

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21
Q

a node that forwards or routes data packets from one network to their destination in another network

A

router

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22
Q

central node that coordinates the flow of data by sending messages directly between sender and receiver nodes

A

switch

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23
Q

expansion cards located within the system unit that connect the computer to a network

A

network interface cards (NIC)

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24
Q

sometimes referred to as LAN adapter

A

network interface cards (NIC)

25
Q

control and coordinate the activities of all computers and other devices on a network

A

network operating system (NOS)

26
Q

a computer specialist responsible for efficient network operations and implementation of new networks

A

network administrator

27
Q

network with nodes that are in close physical proximity

A

local area networks (LAN)

28
Q

LAN that are being used by individuals in their homes and apartments

A

home networks

29
Q

this network allows different computers to share resources, including a common Internet connection

A

home networks

30
Q

it uses radio frequencies to connect computers and other devices

A

wireless LAN

31
Q

or base station, interprets incoming radio frequencies and routes communications to the approprate devices (a.k.a. hotspots)

A

wireless access point

32
Q

internal devices which is used to connect to hotspots

A

wireless network card

33
Q

external device used to connect to hotspots

A

wireless adapter

34
Q

a type of network that works within a very small area- your immediate surroundings

A

personal area network (PAN)

35
Q

these networks are frequently used as links between office buildings that are located throughout a city

A

metropolitan area networks (MAN)

36
Q

this network span distances up to 100 miles

A

metropolitan area networks (MAN)

37
Q

countrywide and worldwide networks

A

wide area networks (WAN)

38
Q

widest of all WANs which spans the entire globe

A

internet

39
Q

use microwave relays and satellites to reach users over long distances

A

wide area networks

40
Q

describes how a network is arranged and how resources are coordinated and shared

A

network architecture

41
Q

arrangement or configuration of network

A

topologies

42
Q

5 most common topologies are

A 
bus network
ring network
star network
tree network
mesh network
43
Q

each device is connected to a common cable called a bus or backbone and all communications travel along this bus

A

bus network

44
Q

each device is connected to two other devices forming a ring

A

ring network

45
Q

each devices is conneceted to a central node, either directly or through one or more other devices

A

tree network

46
Q

also known as hierarchial network

A

tree network

47
Q

this topology is the newest type type that each node have more than one connection to the other nodes

A

mesh network

48
Q

two strategies of sharing information and resources

A

client/server or peer-to-peer

49
Q

uses central servers to coordinate and supply services to other nodes on the network

A

client/server network

50
Q

nodes have equal authority and can act as both clients and servers

A

peer-to-peer (P2P) network

51
Q

a private network within an organization that resembles the internet, use browsers, websites, and web pages

A

intranet

52
Q

a private network that connects more than one organization

A

extranet

53
Q

securing large computer networks

A

network security

54
Q

network security includes

A

firewalls,
intrusion detection system,
virtual private networks

55
Q

consists of hardware and software that control access to a comoany’s intranet and other internal networks

A

firewall

56
Q

software used to filter a message or file to pass into an organization’s network

A

proxy server

57
Q

work with firewalls to protect an organization’s network where it recognizes signs of network attack and disable access before an intruder can do damage

A

intrusion detection system (IDS)

58
Q

create a secure private connection between a remote user and an organization’s internal network

A

Virtual Private Networks (VPN)

CSci 11 (11 decks)

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