Questions

As we conclude, here is a list of questions for you to test your knowledge regarding this chapter's material. You will find the answers in the Assessments section of the Appendix:

1. When you assess your local ports using netstat, ss, or another command, will you ever see a UDP session in the ESTABLISHED state?
2. Why is it important to be able to determine which processes listen on which ports?
3. Why is it important to determine which remote ports you connect to from any particular application?
4. Why would you scan for expired or soon-to-expire certificates on ports other than tcp/443?
5. Why would netcat need sudo rights in order to start a listener on port 80?
6. In the 2.4 GHz band, which three channels make the best selection to reduce interference?
7. When would you use a Wi-Fi channel width other than 20 GHz?