G10 - CS - Data Packets (2.1)

Suppose a video conference is taking place between delegates in two different

countries. Packet switching is being used to send video and sound data

between the delegates:

Describe:

i any potential problems with sound and video quality

ii how these problems could be caused.

Explain how packet switching could be used to download a large web page

from a website.

a) Explain how it is possible for packets to be lost during their transmission across a network.

b) Describe how it is possible for a system to deal with lost packets and prevent them from slowing down the transmission process.

c) Explain why you think packet switching might improve data security.