- Different transmission media may be used within a network.
(a) (i) Identify two characteristics of fibre optic cables as a transmission medium. [2]
(ii) Identify two characteristics of wireless transmission. [2]
(b) Describe how encryption is used to protect data during transmission. [3]
(c) Explain how data is transmitted using packet switching. [5]
(d) Explain one social implication of changes to working patterns due to the use of a virtual private network (VPN). [3]