Answer it
P1 a2 packet switching
3 marksYou mark it yourself against the marking points
A student at home uploads a large photo of a science poster to the school's file server. The photo is sent across the internet using packet switching.
(a) State one item, other than part of the photo itself, that each packet carries. [1]
(b) Explain why the packets can arrive at the file server in a different order from the one they were sent in. [2]
[3]