Which of the following protocols does DNS utilize on port 53?
Answer(s): A
Which of the following network devices builds a table of ports to MAC addresses to forward packets only to necessary ports?
Which of the following OSI layers performs error detection using a Frame Check Sequence?
Answer(s): D
At which of the following layers of the OSI model do packets exist?
An administrator is using a packet sniffer to try to determine what is causing the traffic on the network. The administrator sees a lot of packets on port 25. Which of the following traffic types is MOST likely using port 25?
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