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ISTM 210 > chapter eight > Flashcards

chapter eight Flashcards

1
Q

computer networks

A

two or more computers connected together to communicate and share resources

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2
Q

shared resources

A

computer files, folders, software, peripheral hardware

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3
Q

advantages of a computer network over a stand-alone system are so significant that…

A

businesses cannot compete without a network (even if the business is a sole proprietorship)

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4
Q

clients

A

(what make up a network)

desktops, laptops, smartphones, etc.

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5
Q

server

A

central computer

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6
Q

node

A

every device connected to a network

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7
Q

network advantages:

A
  • economics
  • software
  • collaboration
  • back up
  • internet
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8
Q

peripheral devices

A

printer, scanners, etc.

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9
Q

4 basic components of a network

A
  • network interface controller (NIC)
  • ethernet card/protocol
  • physical cable system
  • network hub
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10
Q

network interface controller (NIC)

A

first component of a network, plugged into motherboard (allows communication)

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11
Q

most computers come “_____ ______”

A

network ready

already come with a NIC

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12
Q

what is the most common NIC?

A

ethernet card

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13
Q

what does an ethernet card provide?

A

a media access control (MAC) address: unique 48 bit address

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14
Q

protocol

A

standard language

allows communication and data transfer between computers

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15
Q

where is protocol installed?

A

the ethernet card

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16
Q

what is the most common physical cable system?

A

ethernet cable

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17
Q

“twisted pair”

A

most common type of cable wire

cancels out electromagnetic forces from other devices and increases reliability

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18
Q

network hub

A

central location of the computer network that serves as a traffic cop for network connection and communication

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19
Q

what is the most common hub?

A

ethernet hub

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20
Q

intranet

A

the business’ private web-based network
clients=employees
protocols=rules

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21
Q

transmission control protocol/internet protocol

A

common network protocol, guarantees the reliability fro end user
packets sent in correct order

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22
Q

packets

A

smaller, more manageable pieces

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23
Q

user datagram protocol (UDP)

A

does not guarantee reliability

streamed data mostly, frames can be lost

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24
Q

OS/platform

A

controls memory, input/output devices, and manages computer files (run with little/no user interaction)

25
Q

network operating system

A

controls an entire network (responsible for network traffic control, administering packets, file management, administering certain functions (backup, security, etc.)

26
Q

when a new device is attached to a network, the NOS is able to…

A

recognized it and install it as a part of the network

27
Q

multi-processing

A

several processes to occur at one time

28
Q

preregistering with the network administrator

A

the NOS must know who the network end user is going to be

29
Q

network administrator

A

responsible for smooth network operations, network performance and implementation of new nodes or new network

30
Q

businesses’ ______ ______ often determines network access

A

corporate hierarchy

31
Q

topology

A

mapping of a physical network and logical connections between nodes

32
Q

nodes examples

A

computers, hubs, printers, and switches

33
Q

bus topology/linear bus

A

each of a network’s nodes is connected to a common linear back bone that has two endpoints

34
Q

advantages of bus topology

A

all nodes simultaneously receive data

35
Q

disadvantages of bus topology

A

if the backbone is down, all nodes are down

36
Q

star topology

A

center (hub) and spokes (nodes)
client/server model
MOST COMMON TOPOLOGY

37
Q

disadvantage of star topology

A

if the central hub fails, every nod fails

38
Q

ring topology

A

each node is connected to two computers
data transmitted in a circular manner
LEAST USED

39
Q

advantage of ring topology

A

when it can’t flow one direction, data can try another direction

40
Q

local area network (LAN)

A

relatively small, typically in a single building (smaller business/smaller parts of a larger business)

41
Q

campus area network (CAN)

A

connects two or more LANs

42
Q

metropolitan area network (MAN)

A

connects two or more LANs/CANs within a city or town

43
Q

wide area network (WAN)

A

encompasses a wide geographical area, connecting LANs/CANs/MANs
centralized data
airlines (ticket information)

44
Q

dumb terminal

A

a computer whose sole purpose is to connect to the network and nothing else

45
Q

peer-to-peer networks (P2P)

A

connect computers directly to one another without the use of a server
(easy set up, common for sharing audio/video)

46
Q

internet

A

largest network
connects LANs/CANs/MANs/WANs
interconnection of public, private, commercial, industrial, and governmental networks

47
Q

unwanted user

A

primary threat

48
Q

password

A

secret word/combination of characters

49
Q

strong passwords

A

specific amount of characters, numbers, cases, or special characters
(mixed result in effectiveness)

50
Q

passphrase

A

memorable strong password

- ex: Just1Time

51
Q

longevity of a password

A

how often to reset

52
Q

why must network administrators work close with HR?

A

to delete terminated employees logins

53
Q

cookie

A

small program, computer file designed to gather company data and information (potentially undesirable)

54
Q

cached

A

website content is stored on a user’s (client) computers

55
Q

permissions

A

grant access/restrict specific files

56
Q

firewall

A

specialized hardware and software that allow only authorized personnel to access an organization’s intranet

57
Q

intranet

A

private version of internet

58
Q

how can employees who telecommute are able to log on to their business’ computer network?

A

access its intranet from home by getting past the company’s firewall

ISTM 210 (23 decks)

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