The network install is failing redundancy testing at the MDF. The traffic being transported is a mixture of
multicast and unicast signals. Which of the following would BEST handle the rerouting caused by the disruption
of service?

A.
Layer 3 switch

B.
Proxy server

C.
Layer 2 switch

D.
Smart hub

Explanation:
The question states that the traffic being transported is a mixture of multicast and unicast signals. There are
three basic types of network transmissions: broadcasts, which are packets transmitted to every node on the
network; unicasts, which are packets transmitted to just one node; and multicasts, which are packets
transmitted to a group of nodes. Multicast is a layer 3 feature of IPv4 & IPv6. Therefore, we would need a layer
3 switch (or a router) to reroute the traffic. Unlike layer 2 switches that can only read the contents of the datalink layer protocol header in the packets they process, layer 3 switches can read the (IP) addresses in the
network layer protocol header as well.