1. Can a host have more than one multicast address? Explain.
2. A multicast router is connected to four networks. The interest of each network is shown below. What is the group list that should be advertised by the router?
a. N1: {G1, G2, G3}
b. N2: {G1, G3}
c. N3: {G1, G4}
d. N4: {G1, G3}