Help with Exam Question

[unwashed potato!]

im donig past exam papers for ITGS atm and am stuck on this question so fast responses would be wonderful.

There is a picture of 3 computers conected using wires to a HUB which then is connected to a file server and a laser printer again by wires, and it asks what type of network is this?

A. peer-peer, im sure it isn't this one
B. a wide area network where 3 cmoputers a connected via a wiring HUB, i think its this one but not sure
C. A client/server network. not sure what this is? anyone fill me in?
D. A Stand alone network with connection to the internt via a HUB, pretty sure its not this one as there is no internet connection.

thanks for the help guys

 

[unwashed potato!]

Also while you're at it, which system should be included in a system input to avoid incorrect output? i thought it was a value checker. other options given are, searching, selecting, and analysing.