GCSE Network Topologies and Protocols

Choose all that are true about star networks

• All devices have a connection to a central switch or server

• They are the most fault tolerant type of network

• If one connection fails, only that one device is affected

• They can be expensive because of the large amount of cabling needed

Choose all that are true about mesh networks

• if one connection fails there may be an alternative

• They are the most fault tolerant type of network

• 'Mesh' is an example of network topology

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Choose all that are true about WiFi

• WiFi is a wireless protocol

• WiFi is just a catchy name for the protocol IEEE 802.11

• WiFi needs Ethernet cables to connect you to it

• WiFi is just another name for Internet

Choose all that are true about WiFi

• It uses radio waves

• It uses unlicensed frequencies

• Small animals can actually hear WiFi signals

• WiFi frequencies are strictly licensed by the WiFi Alliance

Which are true about WiFi?

• There are 2 main frequency bands for WiFi

• WiFi frequencies are measured in gigaHertz

• You can use any frequency for WiFi signals

• You can only use WiFi with a smartphone

Which are true about WiFi frequency bands and channels?

• Each channel is divided into several bands

• Each band is divided into several channels

• Using different channels helps stop interference

• Each channel has a slightly different frequency

Choose all that are true about frequency

• Its unit of measurement is the hertz.

• It's a measure of how many times something changes per second

• The unit of measurement is the freq

• Radio waves can have a variety of frequencies

WiFi encryption is especially important because... (choose all true answers)

• People sometimes need to log on to private accounts using WiFi

• Places that use WiFi often have strangers looking over your shoulder (shoulder surfing)

• WiFi signals can be picked up by anyone in range

• It is not (this is a trick question)

Choose all that are WiFi encryption methods?

• WPA2

• WEP

• WAP

• WYSIWYG

Choose all that are true about Ethernet

• It's just a catchy name for a protocol

• Ethernet involves signals moving through wires

• It can be used in LANs

• It's not an Internet protocol