If you can correctly answer these questions before going through this section, save time by skimming the Exam Alerts in this section and then completing the Cram Quiz at the end of the section.
1. Explain how IPsec is used, including the OSI model layer it operates on.
2. Explain what ICMP is and how it is used in a networking environment.
3. What are the major differences between IPv4 and IPv6?
1. The Internet Protocol Security (IPsec) authentication and encapsulation standard is widely used to establish secure VPN communications. The use of IPsec can secure transmissions between critical ...
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