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nts > programming skills > Flashcards

programming skills Flashcards

1
Q

computer networks are the convergence of two important technologies:

A

computing and telecommunication

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2
Q

what is telecommunications technology

A

the technology of long distance communications

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3
Q

what is a node

A

each computer on a network

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4
Q

what is a server

A

a central computer included on many networks

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5
Q

what is a hybrid network

A

a combination of both client/server and peer to peer network

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6
Q

examples of categories of networks:

A
  • WAN
  • LAN
  • MAN
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7
Q

LAN stands for:

A

local area network

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8
Q

a lab with 20 computers and a laser printer is an example of what area network

A

local area network (LAN)

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9
Q

what materials does an LAN use

A
  • twisted pair
  • fiber optic
  • coaxial cable
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10
Q

what is a collision (in reference to LAN)

A

when two workstations on shared ethernet try to access LAN at the same time

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11
Q

what network covers a large area

A

wide area network (WAN)

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12
Q

the primary difference b/w LAN and WAN

A

distance

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12
Q

what is a terminal emulation software (in reference to WAN)

A

a communication software that allows a personal computer to appear as terminal

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12
Q

what area network do mobile phone systems often use

A

metropolitan area network (MAN)

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13
Q

what is metropolitan area network (MAN)

A

a network that transmits data over citywide distance faster than LAN

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13
Q

network interface card (NIC) allows a direct connection to:

A

network

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14
Q

what does de facto mean

A

by fact

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15
Q

examples of governing bodies that approve network standards

A
  • institute of electrical and electronic engineers (IEEE)
  • electronics industry association (EIA)
  • american standards national institute (ANSI)
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16
Q

the ITU was formerly known as:

A

CCIT

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17
Q

examples of types of protocols:

A
  • ethernet
  • ARCnet
  • FTP
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18
Q

examples of de-jure standards:

A
  • institute of electrical and electronic engineers (IEEE)
  • american standards national institute (ANSI)
  • international organization for standardization (ISO)
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19
Q

examples of LAN protocols:

A
  • ethernet
  • token ring
  • ARCnet
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20
Q

what is a token ring

A

a protocol that works on the concepts of ring topology and a token

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21
Q

what is the most commonly used LAN protocol

A

ethernet

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22
Q

what happens in CSMA/CS

A

a node listens to the bus for specified time and waits until the node has completed the transmission

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23
Q

what is CSMA/CD

A

an LAN access method that resolves the contention b/w two or more nodes by collision detection

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24
Q

the physical layout of a network is called:

A

topology

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25
Q

what is the most common LAN topology

A

star topology

26
Q

what network topology places all nodes on a single cable

A

bus topology

27
Q

what is a hub (in reference to star topology)

A

the central device

28
Q

what topology uses terminators

A

bus topology

29
Q

what topology uses routers

A

mesh topology

30
Q

example networks of ring topology

A
  • fiber distributed data interface (FDDI)
31
Q

what topology is fiber distributed data interface (FDDI)

A

ring topology

32
Q

what is de jure protocol

A

a protocol that is properly researched, designed and finally published as a standard

33
Q

what is a bridge

A

a device used to connect similar networks

34
Q

how many layers does an open systems interconnection (osi) reference model have

A

7 layers

35
Q

what osi layer is responsible for establishing, maintaining and terminating user connection

A

session layer

36
Q

what are the two separate sub layers the osi data link layer has

A

LLC and MAC

37
Q

what is the bottom layer of the OSI model

A

physical layer

38
Q

what is the physical layer (in reference to OSI model)

A

the layer that is used to control how a bit stream of data is sent and received over the physical medium

39
Q

what is the presentation layer (in reference to OSI model)

A

the layer that defines the formats that the data uses as it is transmitted on the communication line

40
Q

what layer of the OSI model is responsible for segmentation and reassembly

A

4th layer (transport layer)

41
Q

what layer lies between the network layer and the application layer (in reference to OSI model

A

transport layer

42
Q

which OSI model layer identifies the route determination

A

network layer

43
Q

what OSI layer is closest layer to the transmission medium

A

physical layer

44
Q

what layer lies b/w the physical and network layer (in reference to OSI model)

A

data link layer

45
Q

what layer of the OSI model performs data compression

A

physical layer

46
Q

project 802 defines standards for which two OSI model layers?

A

physical and data link layers

47
Q

what is the internet

A

a set collection of a large number of computers all over the world connected to one another

48
Q

what is a website

A

a collection of related web pages

49
Q

FTP stands for

A

file transfer protocol

50
Q

what is the FTP facility used for

A

file transfer

51
Q

examples of services on the internet:

A
  • WWW
  • FTP
  • email
52
Q

what is downloading

A

the process of transferring a file from a remote computer to a local computer on a network

53
Q

what is uploading

A

the process of transferring a file from our own computer to the remote computer on a network

54
Q

what can help extend cabling on a linear bus topology

A

barrel connector

55
Q

ISDN stands for:

A

integrated services digital network

56
Q

DSL stands for:

A

digital subscriber line

57
Q

what is a router

A

a device that connects multiple networks using similar or different protocols

58
Q

what order are the data transfer rates of LAN typically of

A

megabits per second

59
Q

what is a computer network

A

a collection of computers connected together to share resources and information

60
Q

what is the least amount of computers allowed in a computer network

A

2

61
Q

companies that use networks can save time and money became network users are allowed to share:

A
  • hardware devices
  • software programs
  • information
62
Q

what is a peer-to-peer computer network

A

a computer network in which all computers have equal status and no one has control over others

63
Q

examples of communications devices:

A
  • router
64
Q

what type of network (LAN,WAN,MAN, etc) covers a small area

A

LAN

65
Q
A

nts (4 decks)

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