Questions:

1. What are the three actions a firewall can take towards packages coming in to your computer?
2. List the methods an anti-virus software uses to detect malware files.
3. What does a password manager do?

Answers:

1. It can accept the package and let it in, reject the package and reply "unreachable", or drop the package without sending any reply.
2. Signature-based detection, Heuristic-based detection, and Behavior-based detection
3. A password manager helps people to create and store effective passwords.