A circuit level gateway works at which of the following layers of the OSI Model?
A.
Layer 5 – Application
B.
Layer 4 – TCP
C.
Layer 3 – Internet protocol
D.
Layer 2 – Data link
which of the following layers of the OSI Model?
A circuit level gateway works at which of the following layers of the OSI Model?
answer is A – Layer 5 – Application
Answer: A Layer 5-Application
Circuit level gateways are deployed at the *Session layer* of the OSI model and they monitor sessions like TCP three way handshake to see whether a requested connection is legitimate or not.
The TCP/IP model includes the Session layer (and Presentation) in the Application layer.
https://equizzing.com/ec-council/which-type-of-firewall-is-the-tester-trying-to-traverse-4/
and layer 5 is session layer not Application layer
The answer is A