Question

What type of firewall looks at the previous conversations to determine if a packet should enter a network?

a) packet-filtering
b) circuit-filtering
c) application-level
d) stateful

Answer 1

A stateful firewall looks at previous conversations to determine if a packet should enter a network.

Step-by-step explanation:

The type of firewall that looks at the previous conversations to determine if a packet should enter a network is stateful firewall. A stateful firewall keeps track of the state of network connections by anlyzing data packets and comparing them to previous packets in a conversation. It checks if the packet belongs to an existing, legitimate conversation before allowing it into the network.