For both LAN and WAN Layer 2 protocols Media Access Control (MAC) is used in three ways:


1. Partitioning

2. Random Access

3. Taking Turn

a) Classify the following MAC protocols into one of these categories and justify your choice:

i) Ethernet

ii) WiFi

iii) Bluetooth

iv) 2G

b) Identify the THREE main topologies deployed in Wide Area Networks and outline a key advantage/disadvantage for each one.

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