2. A switch contains the following switch table: MAC Address 55-55-55-55-55-55 66-66-66-66-66-66 77-77-77-77-77-77 Port 1 2 3 a. A frame arrives at the switch with a source MAC of 55-55-55-55-55-55 and a destination MAC of 77-77-77-77-77-77. Out of which port(s) will the switch send the frame? b. A frame arrives at the switch with a source MAC of 55-55-55-55-55-55 and a destination MAC of FF-FF-FF-FF-FF-FF. Out of which port(s) will the switch send the frame? 3. A. Explain how Ethernet detects a collision and retransmits the frame. B. Explain how 802.11 WiFi that uses CSMA/CA detects a collision and retransmits the frame. C. Explain how 802.11 WiFi that does not use CSMA/CA deals with collisions