programming skills

Question 1

computer networks are the convergence of two important technologies:

Answer 1

computing and telecommunication

Question 2

what is telecommunications technology

Answer 2

the technology of long distance communications

Question 3

what is a node

Answer 3

each computer on a network

Question 4

what is a server

Answer 4

a central computer included on many networks

Question 5

what is a hybrid network

Answer 5

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

Question 6

examples of categories of networks:

Answer 6

• WAN
• LAN
• MAN

Question 7

LAN stands for:

Answer 7

local area network

Question 8

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

Answer 8

local area network (LAN)

Question 9

what materials does an LAN use

Answer 9

• twisted pair
• fiber optic
• coaxial cable

Question 10

what is a collision (in reference to LAN)

Answer 10

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

Question 11

what network covers a large area

Answer 11

wide area network (WAN)

Question 12

the primary difference b/w LAN and WAN

Answer 12

distance

Question 12

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

Answer 12

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

Question 12

what area network do mobile phone systems often use

Answer 12

metropolitan area network (MAN)

Question 13

what is metropolitan area network (MAN)

Answer 13

a network that transmits data over citywide distance faster than LAN

Question 13

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

Answer 13

network

Question 14

what does de facto mean

Answer 14

by fact

Question 15

examples of governing bodies that approve network standards

Answer 15

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

Question 16

the ITU was formerly known as:

Answer 16

CCIT

Question 17

examples of types of protocols:

Answer 17

• ethernet
• ARCnet
• FTP

Question 18

examples of de-jure standards:

Answer 18

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

Question 19

examples of LAN protocols:

Answer 19

• ethernet
• token ring
• ARCnet

Question 20

what is a token ring

Answer 20

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

Question 21

what is the most commonly used LAN protocol

Answer 21

ethernet

Question 22

what happens in CSMA/CS

Answer 22

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

Question 23

what is CSMA/CD

Answer 23

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

Question 24

the physical layout of a network is called:

Answer 24

topology

Question 25

what is the most common LAN topology

Answer 25

star topology

Question 26

what network topology places all nodes on a single cable

Answer 26

bus topology

Question 27

what is a hub (in reference to star topology)

Answer 27

the central device

Question 28

what topology uses terminators

Answer 28

bus topology

Question 29

what topology uses routers

Answer 29

mesh topology

Question 30

example networks of ring topology

Answer 30

- fiber distributed data interface (FDDI)

Question 31

what topology is fiber distributed data interface (FDDI)

Answer 31

ring topology

Question 32

what is de jure protocol

Answer 32

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

Question 33

what is a bridge

Answer 33

a device used to connect similar networks

Question 34

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

Answer 34

7 layers

Question 35

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

Answer 35

session layer

Question 36

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

Answer 36

LLC and MAC

Question 37

what is the bottom layer of the OSI model

Answer 37

physical layer

Question 38

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

Answer 38

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

Question 39

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

Answer 39

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

Question 40

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

Answer 40

4th layer (transport layer)

Question 41

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

Answer 41

transport layer

Question 42

which OSI model layer identifies the route determination

Answer 42

network layer

Question 43

what OSI layer is closest layer to the transmission medium

Answer 43

physical layer

Question 44

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

Answer 44

data link layer

Question 45

what layer of the OSI model performs data compression

Answer 45

physical layer

Question 46

project 802 defines standards for which two OSI model layers?

Answer 46

physical and data link layers

Question 47

what is the internet

Answer 47

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

Question 48

what is a website

Answer 48

a collection of related web pages

Question 49

FTP stands for

Answer 49

file transfer protocol

Question 50

what is the FTP facility used for

Answer 50

file transfer

Question 51

examples of services on the internet:

Answer 51

- WWW - FTP - email

Question 52

what is downloading

Answer 52

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

Question 53

what is uploading

Answer 53

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

Question 54

what can help extend cabling on a linear bus topology

Answer 54

barrel connector

Question 55

ISDN stands for:

Answer 55

integrated services digital network

Question 56

DSL stands for:

Answer 56

digital subscriber line

Question 57

what is a router

Answer 57

a device that connects multiple networks using similar or different protocols

Question 58

what order are the data transfer rates of LAN typically of

Answer 58

megabits per second

Question 59

what is a computer network

Answer 59

a collection of computers connected together to share resources and information

Question 60

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

Answer 60

2

Question 61

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

Answer 61

- hardware devices - software programs - information

Question 62

what is a peer-to-peer computer network

Answer 62

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

Question 63

examples of communications devices:

Answer 63

- router

Question 64

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

Answer 64

LAN