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Question 14:

What is the definition of IP multicasting? (Choose 3)

IP multicasting is a series of protocols commonly used to address the short comings of basic broadcasts.
IP multicasting is a series of protocols that allow the selective forwarding of traffic based on layer 2 and layer 3 addressing to select groups of nodes.
IP multicasting is essentially the same as IP broadcasting but with some additional layer-3 functionality.
IP multicasting is a technology and series of protocols that allow broadcasts to selectively pass over layer-3 routed network boundaries according to specific multicast parameters.