Which of the following operates at the Network Layer of the Open System Interconnection (OSI) model?

Which of the following operates at the Network Layer of the Open System Interconnection (OSI) model?
A . Packet filtering
B . Port services filtering
C . Content filtering
D . Application access control

View Answer

Answer: A

Explanation:

Reference: https://www.sans.org/reading-room/whitepapers/protocols/applying-osi-layer-network-model­information-security-1309 (10)