wired and wireless networks

Question 1

what is a network

Answer 1

collection of connected computers that can communicate by sending data between themselves

Question 2

what do we use networks for

Answer 2

resource sharing, data exchange, managing computers

Question 3

what factors affect the performance of a network

Answer 3

choice of hardware, bandwidth, wired or wireless and the topology

Question 4

is wired faster and more reliable than wireless

Answer 4

true

Question 5

what is a topology

Answer 5

the way computers are connected and laid out

Question 6

what is a wan

Answer 6

collection of computers connected over a large geographical area

Question 7

what is an example of a wan

Answer 7

the internet

Question 8

what is a lan

Answer 8

collection of computers connected over a small geographical area

Question 9

what is the most common networking model

Answer 9

client-server model

Question 10

what does a server do in a client-server model

Answer 10

provides services like storing files, printing and hosting a website

Question 11

what are the pros of a client-server model

Answer 11

security updates can be managed centrally, clients can be monitored centrally, administrator can retrieve lost files and password, files are stored centrally and members can easily share files

Question 12

what are the cons of a client-server model

Answer 12

if central server fails then the whole network wouldn’t function, expensive and they are often targeted in cyber attacks like ransomeware and denial of service attacks

Question 13

what is a peer-to-peer network

Answer 13

where each computer is directly connected to each other

Question 14

is each peer on a peer-to-peer network responsible for their own maintenance

Answer 14

yes

Question 15

what are peer-to-peer networks used for

Answer 15

file transfer, streaming videos, wireless printing and blu-tooth speakers

Question 16

what is a computer called on a peer-to-peer network called

Answer 16

peer

Question 17

can each peer only be a client or a server

Answer 17

false. they can be either depending on what they are doing

Question 18

pros of peer-to-peer network

Answer 18

cheap, no dedicated hardware needed, robust, no central server, if one peer fails the others still work, easily set up

Question 19

cons of peer-to-peer network

Answer 19

files must be duplicated and transferred which can lead to multiple versions that may become out of date, peers may loose connections when trying to access files, hard to update software and security

Question 20

what is the internet

Answer 20

a worldwide collection of computer networks(a network of networks)

Question 21

what is internet protocol

Answer 21

a set of rules that make sure devices can work together on the internet

Question 22

what is an IP address used for

Answer 22

to send and receive data

Question 23

give examples of applications that cause internet traffic

Answer 23

world wide web(www), email traffic, multiplayer game traffic and video streaming traffic

Question 24

what is packet switching

Answer 24

the process of how data is transmitted on the internet

Question 25

why are routers essential for packet switching

Answer 25

they pass data packet between interconnected networks

Question 26

what is the domain

Answer 26

the name of the server that is hosting the website