GCSE Protocols

Only one of these could be described as a MESH network - which one?

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• 
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WiFi is...

• The Internet

• The way mobile phones work

• Microwaves

• The protocol described in IEEE 802.11

WiFi frequencies are

• Licensed by the BBC

• Licensed by the government

• Licensed by the WWW consortium

• Not licensed

Frequency is measured in

• Hertz

• Metres per second

• Volts

• Seconds

The main WiFi bands are divided into...

• Subnets

• Minor Frequencies

• Channels

• IP Addresses

WiFi base stations don't all use the exact same frequency because...

• They try to find the cheapest one

• Radio stations sometimes interfere

• The technology is just not accurate enough

• They want to avoid interference from neighbouring channels

Which of these is NOT a WiFi encryption method?

• WPA

• WEP

• WEP2

• WAP

Why is WiFi encryption more of an issue than with Ethernet?

• Ethernet is more modern

• WiFi is more common

• WiFi signals travel through the air

• More people are on phones these days

Ethernet is...

• A type of copper cable

• A net for catching ethers

• A protocol in the IEEE 802 standards

• A type of network adaptor

Which one of these is NOT a valid IPv4 address?

• 122.122.2.2.

• 147.10.301.22

• 1.101.11.11

• 255.255.0.1