Questions

1. Identify all seven layers of the seven-layer OSI model of networking.
2. (a) On what layer does the IP portion of the TCP/IP protocol suite reside? (b) On what layer does TCP reside?
3. Identify the ranges of the Class A, B, and C private networks.
4. Identify the three types of IPv4 addresses.
5. A desktop system has the following specifications. Can the current version of pfSense be installed onto it?
   • Pentium 4 1.8 GHz; 32-bit processor
   • 2 GB RAM
   • 250 GB IDE drive
   • DVD-ROM optical drive
6. Identify the file system options that are available when installing pfSense.
7. Under what circumstances is it possible to login to the pfSense console through the WAN port? Assume that SSH login has not yet been enabled.
8. If you configured both the WAN and LAN interfaces from the console, but you did not set up a DHCP server on the LAN interface, what additional step must be done if you want access to the pfSense web GUI from a PC that's connected to the LAN port?
9. If you need to run the Setup Wizard again after the initial configuration, how can you do this?
10. Why is it generally a good idea to enable Block RFC1918 Private Networks on the WAN interface?