Watchguard Network Security Practice Test

True or False: A packet filter analyzes traffic at the application, transport, and network layers?

1. True

2. False

3. Sometimes true

4. Always false

The correct answer is: False

A packet filter primarily operates at the network and transport layers of the OSI model, specifically looking at the headers of IP packets to make decisions about allowing or blocking traffic based on IP addresses, port numbers, and protocols. It does not analyze traffic at the application layer, which deals with higher-level operations such as data formats and application communications. The statement suggests that packet filtering encompasses all three layers, which is not accurate. Therefore, the correct interpretation is that the statement is false.