5 computer networks

Question 1

what are the advantages and disadvantages of wired and wireless networks?

Answer 1

wired:
+ faster connection speed
+ higher bandwidth
+ fewer security risks
- cables can be hazardous
- expensive to set up

wireless:
+ lower setup cost
+ easy to connect new devices
+ users can connect to the network if they are in range
+ can connect multiple devices without extra hardware
- slower connection speed
- connection speed reduces further away from the WAP
- walls can interfere with the connection
- more security risks
- easier to intercept and for hackers to get data

Question 2

what are the advantages of using a star topology instead of a bus topology?

Answer 2

fewer data collisions, faster data transmission

Question 3

what are the benefits and risks of computer networks?

Answer 3

benefits:
• share resources (printers)
• central backing up of data
• central installation and management of software
• central monitor of network activity

risks:
• risk of malware spreading
• high dependency if network hardware
• can be expensive due to hardware being needed

Question 4

define “network protocol”

Answer 4

a set of rules allowing networks to communicate

Question 5

why does a firewall improve network security?

Answer 5

prevents unauthorised access, monitors network traffic

Question 6

what are two differences between a LAN and WAN?

Answer 6

WAN is a Wide Area Network that links more than one remote geographical site to another.

LAN is a Local Area Network thank links together devices that are within one site.