Which of the following is a network security device that operates at the session layer of the OSI model?

Which of the following is a network security device that operates at the session layer of the OSI model?
A . Firewall
B . Intrusion Detection System (IDS)
C . Intrusion Prevention System (IPS)
D . SSL/TLS

View Answer

Answer: B

Explanation:

Option 1: Incorrect. A firewall operates at the network layer (layer of the OSI model, not the session layer (layer 5).

Option 2: Correct. An Intrusion Prevention System (IPS) operates at the session layer (layer 5) of the OSI model. It monitors network traffic in real-time and can block or prevent malicious activities.

Option 3: Incorrect. An Intrusion Detection System (IDS) operates at the network layer (layer of the OSI model, not the session layer (layer 5).

Option 4: Incorrect. SSL/TLS is a cryptographic protocol that operates at the transport layer (layer of the OSI model, not the session layer (layer 5).