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1. Circuit switching

   • Connection is through a dedicated route
   • Route is blocked off until transmission is complete
   • Data is split into packets
   • All packets follow the route
   • Packets arrive in the order they were sent
   • The packets are quickly reassembled
   • Easy for a hacker to intercept data
   • Example: Phone line

2. Packet switching

   • Packets are sent down seperate routes
   • More efficient use of the network
   • No dedicated routes
   • Best path decided by routers along the way
   • Takes longer to reassemble data
   • Difficult for hackers to intercept data

3. Data is split into packets

4. Packets contain destination information along with data