End of unit assessment - Networks

Computer networks share...

• Files

• Resources

• Software

• All of the above

What type of signals are transmitted across fibre optic cables?

• Electric

• Light

• Sound

• Radio

Which of the following can affect the performance of a network?

• Whether the connection is wired or wireless

• The amount of users sharing the network

• Bandwidth

• All of the above

Which is the correct answer to the below:
"A number of devices that communicate with each other without the need of the internet"

• LAN
• WAN
• TCP/IP
• DSL

Ethernet cables are categorised by the number of twisted pairs they contain.

• True.

  This is why CAT6 is twice as superior to CAT3.

• False.

  They are generally categorised by bandwidth. E.g. 100 Mbps.

How many channels are used by WiFi in a radio frequency band?

• 2.4

• 3

• 5

• 11

What happens when adjacent channels in a radio frequency band are used?

• WiFi performance is affected negatively by interference

• WiFi performance is affected positively by reducing contention

• WiFi performance is affected positively with boosting

• WiFi performance is unaffected

Which best describes the function of a switch?

• Connects printers together in a LAN

• Connects devices together in a WAN

• Connects devices together in a LAN

• Shares Internet connection on a LAN

What is cloud storage?

• Storing data on the server of another company, accessible through the Internet

• Storage accessible anywhere with an internet connection

• Running programs on a remote server, accessible with an Internet connection

• All of the above

Select all the true statements:

• If the server goes down in a client-server network, all clients lose access to work and resources.

• All computers in a client-server network are equal

• A peer-to-peer network has one central controlling computer

• Peer-to-peer networks are less secure because data is spread out among devices.

• The server in a client-server network can become overloaded if too many clients are accessing it at once.