Calculate the latency (from first bit sent to last bit received) for the following: 1. 100-Mbps Ethernet with a single store-and-forward switch in the path, and a packet size of 12,000 bits. Assume that each link introduces a propagation delay of 10s and that the switch begins retransmitting immediately after it has finished receiving the packet 2. Same as 1 but with three switches. 3. Same as 1, but assume the switch implements "cut-through" switching; it is able to begin retransmitting the packet after the first 200 bits have been received