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# Chapter Summary (1 of 2) - Networks are categorized in size as a PAN, LAN, Wireless LAN, MAN, or WAN - Network performance is measured in bandwidth and latency - Two most popular ways to connect to the Internet are cable Internet and DSL - A VPN protects data by encrypting it from the time it lea...

# Chapter Summary (1 of 2) - Networks are categorized in size as a PAN, LAN, Wireless LAN, MAN, or WAN - Network performance is measured in bandwidth and latency - Two most popular ways to connect to the Internet are cable Internet and DSL - A VPN protects data by encrypting it from the time it leaves the remote computer until it reaches a server on the corporate network - A host needs an IP address, subnet mask, default gateway, and IP addresses for DNS servers to communicate with other hosts on the local or remote networks - Network adapters, commonly called NICs, are rated by speed and each has a MAC address