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
Answer: A
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 2switches that can only read the contents of the data-link layer protocol header in the packets they process, layer 3 switches can read the (IP) addresses in the network layer protocol header as well.