1. We have a laptop user transmitting at 1 Mbps with no loss. The packets, including payload and all headers, are 100 bytes long and the average CSMA backoff is 32 microseconds. Assuming RTS/CTS induces an extra amortized load of 160 microseconds per data packet, how much faster (in percent) is the CSMA/CA protocol in this situation?

2. Suppose you are transmitting a 1500 byte WiFi frame at 600Mbps. If the physical and link layer overhead is 92% (only 8% of packet time is spent transmitting the 1500-byte WiFi frame), how long is this overhead, in microseconds?

3. What is the theoretical maximum length for cable segments using the original 10Mb/s Ethernet standard (in meters)? You should assume the minimum length packet is 72 bytes, and a propagation speed of 2 * 10^8 m/s.