LPI Linux Certification in a Nutshell, 2nd Edition

Chapter 42. Exam 202 Review Questions and Exercises

This chapter is designed to help you learn more about the concepts, best practices, and commands tested in the LPI 202 Exam. Even advanced Linux users will find these activities useful, because they are all based on the LPI's Objectives. The things you read about in this chapter might help remind you about how to do tasks that you may not have had to do in a while.

It is best if you use a "live," nonproduction Linux system to conduct these exercises. This way, you can apply your knowledge, but still not worry too much if your experiments cause the system to become unstable or to no longer be as secure as before.

Networking Configuration (Topic 2.205)

Review Questions

1. You have learned that a system does not currently specify the correct default gateway. The correct default gateway address is 192.168.2.1. What commands would you issue to delete the existing gateway address and add a new one?

2. What command would you issue to assign a second IP address of 192.168.2.55 and a netmask of 255.255.255.0 to your eth1 card?

3. The arpwatch daemon has discovered several "flip-flops," implying that ARP poisoning has occurred on your network. Where can you read the alerts sent by the daemon?

4. A remote office has had to swap out a failed NIC in its Linux router. This router must work with an ISP's cable modem to allow the remote office to access the Internet. However, the ISP's cable modem recognizes only the MAC address of the failed card. What command ...