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Hop count
A measure of distance between two points on the Internet. It is equivalent to the number of routers that separate
the source and destination.
HTML
Hypertext Markup Language - The page-coding language for the World Wide Web.
HTML browser
A browser used to traverse the Internet, such as Netscape or Microsoft Internet Explorer.
http
Hypertext Transfer Protocol - The protocol used to carry world-wide-web (www) traffic between a www browser
computer and the www server being accessed.
ICMP
Internet Control Message Protocol - The protocol used to handle errors and control messages at the IP layer.
ICMP is actually part of the IP protocol.
Internet address
An IP address is assigned in blocks of numbers to user organizations accessing the Internet. These addresses
are established by the United States Department of Defense's Network Information Center. Duplicate addresses
can cause major problems on the network, but the NIC trusts organizations to use individual addresses
responsibly. Each address is a 32-bit address in the form of x.x.x.x where x is an eight- bit number from 0 to 255.
There are three classes: A, B and C, depending on how many computers on the site are likely to be connected.
Internet Protocol (IP)
The network layer protocol for the Internet protocol suite
IP address
The 32-bit address assigned to hosts that want to participate in a TCP/IP Internet.
ISP
Internet service provider - A company allows home and corporate users to connect to the Internet.
MAC
Media Access Control Layer - A sub-layer of the Data Link Layer (Layer 2) of the ISO OSI Model responsible for
media control.
