ocr comp sci modes of connection

Wired meaning

physical cables used to join devices together to transmit data

What is ethernet: speed, security, range, portability, cost, safety

• wired networking standard

• twisted pair cables for duplex communication (simultaneously transmit and recieve data)

• fast data transfer

• better physical security

• high range (up to 100 m) and less susceptible to interference

• can’t move easily as it is physical connection

• need more cables to add new device so costly

• trip hazard so needs routing along walls or under floors

Wireless meaning

connections made using radio waves to transmit data through the air

What is wifi: speed, security, range, portability, cost, compatibility

• common standard for wireless networks

• devices communicate with a WAP

• easy to move around

• less expensive to set up and add new devices

• compatible with most devices

• slower data transfer than ethernet

• less secure than ethernet

• relies on signal strength to WAP

• signals can be obstructed

• can transmit at 2.4GHz but has slower transmission speed

What is bluetooth: speed, security, range, compatibility, power

• common standard for wireless networks

• direct connection between two devices

• very slow transfer speeds

• ideal for personal devices and ad-hoc connections

• low power consumption

• very short range

• data can be intercepted by anyone in range