Which of the following is a router that operates at the Data Link and Transport layers of the OSI model, examining the header of every packet of data that it receives to determine whether that type of packet is authorized to continue to its destination?
A) Firewall
B) Packet-filtering firewall
C) Kerberos
D) None of the above

Question

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The Answer of Which of the following is a router that operates at the Data Link and Transport layers of the OSI model, examining the header of every packet of data that it receives to determine whether that type of packet is authorized to continue to its destination?
A) Firewall
B) Packet-filtering firewall
C) Kerberos
D) None of the above

Which of the Following Is a Router That Operates at the Data