Client-server and peer-to-peer

Client-server network

• One or more computers connected to a powerful central computer

• Clients makes requests to server, which processes requests and sends responses

Peer-to-peer network

• Individual computers connected to each other, either in a LAN or over a WAN

• Computers can act as either the client or server depending on which device is making the request

In which type of network is there no central server?

Peer-to-peer

Which type of network has better security and why?

Client-server - files stored in central location with access rights managed by server

In which type of network are backups done centrally and why is this good?

Client-server

• No need for individual users to back up their data

• Centralised backups make it easier to restore files

Which network type is more expensive to install and manage?

Client-server

Which network type requires more expertise and why?

Client-server - professional IT staff needed for server maintenance and to run the network

File server

Holds and manages data for all clients

Print server

Manages print requests

Web server

Manages requests to access the Web

Mail server

Manages the email system

Database server

Manages database applications

Which network type has been widely used for piracy and why?

Peer-to-peer - files being illegally downloaded are very difficult to trace

How many visits are piracy sites estimated to have had in 2011?

53 billion (US Chamber of Commerce)

What are the disadvantages of piracy?

• Less money for industries, including:

  • Music

  • Movie

  • Publishing

  • Photography

• Loss of jobs