a) Compare the performance of Channel Partitioning MAC protocols and random access MAC protocols at high and low loads. b) CSMA/CD protocol has the feature of detecting whether the line is empty when sending packets in order to avoid collision. If the line is empty, the packet is sent, if it is full, the line is expected to be empty. Despite this, collisions can occur with this protocol. Why are these collisions? Explain. c) A new computer named A connects to an Ethernet-based LAN. Computer A wants to send an IP datagram to computer B. Suppose computer A knows the IP address of B. How does computer A know if computer B is on the same LAN or further away? Explain