Y8 - CY1 - HW - W4

How does data get from one place to another

• Transition Medium

• Wireless

• Teleportation

• USB File Transfer

What are twisted pair cables often called?

• Ethernet

• Coaxial

• USB Mini

• Arpanet

• Telecom Inverter

How many pairs of wires are there in a twisted pair cable?

• 4

• 2

• 8

• 1

• 10

Why are the wires in a twisted pair cable twisted around one another?

• To prevent interference

• To boost the strength of the signal

• For redundancy e.g. if one wire fails the other can still carry the same message

• To make the cable safer to handle e.g. the wires earth each other

• To prevent them from affecting things like compasses

Fibre optic cables transfer data as...

• Pulses of light

• Radio signals

• Electromagnetic pulses

• Sound waves

• X rays

Which is the fastest method of data transfer?

• Fibre Optic

• Twisted Pair Cable

• Radio Waves

Which protocols rely on the use of radio technologies?

• WiFi

• Bluetooth

• Ethernet

• Coaxial

• Fibre Optic

What is a protocol?

• A set of rules for how something should be done

• A set of instructions

• A method of data transfer

• A program that sends emails