Which of the following types of firewall treats each network frame or packet in isolation?

A.
statefull firewall

B.
hardware firewall

C.
combination firewall

D.
packet filtering firewall

E.
stateless firewall

F.
None of the choices.

Explanation:

A stateless firewall treats each network frame or packet in isolation.
Such a firewall has no way of knowing if any given packet is part of an existing connection, is

trying to establish a new connection, or is just a rogue packet.