1. Search the Internet for information about a technology called personal or home office firewalls. Examine the various alternatives, select three of the options, and compare their functionalities, cost, features, and types of protection.
2. Go to the Web site of VeriSign, one of the market leaders in digital certificates. Determine whether VeriSign serves as a registration authority, certificate authority, or both. Download its free guide to PKI and summarize VeriSign's services.