126. Which routing protocol is used to allow hosts to participate in multicasting?

Вариант ответа 1 - A. OSPF (Open Shortest Path First)

Вариант ответа 2 - B. IGMP (Internet Group Management Protocol)

Вариант ответа 3 - C. RIP (Routing Information Protocol)

Вариант ответа 4 - D. BGP (Border Gateway Protocol)