Question: How does TCP Wrappers differ from a firewall?

1. Firewalls are only service specific, whereas TCP Wrappers can block all traffic.
2. TCP Wrappers works at the network layer, so it blocks traffic before the firewall even sees it.
3. Firewalls easily spawn commands to operate on connection data, whereas TCP Wrappers cannot.
4. TCP Wrappers works at the application layer, so it can make access decisions on encrypted data.

Answer: The correct answer of the above question is Option D:TCP Wrappers works at the application layer, so it can make access decisions on encrypted data.