Glossary h

Logic used by a device on a LAN, for which it chooses to either send or receive a frame at a point in time, but not both at the same time. CSMA/CD logic imposes half duplex logic on a NIC.

A data link layer protocol that is used on WAN links.

A bunch of bits placed in front of data prior to transmission. The bits allow some protocol to have a place to include information along with the user data to accomplish the function of the protocol.

When a web browser requests a web page from a web server, if the URL does not include text after the name of the server, the server returns the default web page. That default web page is called a home page.

A name that represents a TCP/IP host computer.

The portion of an IP address that has a unique value as compared to all other hosts inside the network. Class A, B, and C networks have 3, 2, and 1 octet long host parts, respectively.

IDS software that is installed on a computer, typically a server.

A standard, which is not part of the TCP/IP model, that defines the format and meaning of one type of object used to build a web page.

A TCP/IP protocol, defined in RFC 2616, that defines the protocols through which a web browser identifies the web pages and web objects it wants to download, as well as the processes by which the browser downloads the pages and objects.