Half-Duplex:-

Abbreviated HDX. In asynchronous transmissions,, the ability to transmit on the same channel in two directions, but only in one direction at a time.

Handshaking:-

The exchange of control codes or particular characters to maintain and coordinate data flow between two devices, so that data is only transmitted when the receiving device is ready to accept the data. Handshaking can be implemented in either hardware or software, and it occurs between varieties of devices. For example, the data flow might be from one computer to another computer or from a computer to a peripheral device, such as a modem or printer.

Heartbeat:-

An Ethernet signal quality test function. This signal proves that a component is working, and is capable of detecting collisions. Also known as signal quality error or SQE.

Heterogeneous Network:-

A network that consists of work stations, servers, network interface cards, operating systems, and applications from many different vendors, all working together as a single unit. The network may also use different media and different protocols over different network links.

Homogeneous Network:-

A network that consists of one type of workstation, server, network interface card, and operating system, with a limited number of applications, all purchased from a single vendor. All nodes use the same protocol and the same control procedures.

Host:-

The central or controlling computer in a networked or distributed processing environment, providing services that other computers or terminals can access via the network.

Hot Java:-

An interactive Internet World Wide Web browser from Sun Microsystems.

Hot Java is the player for programs written in Java, a programming language designed to create small executable programs that can be downloaded quickly and can run in a small amount of memory. Using Java, you can create interactive Web sites that can download programs to other computers. These programs can display animation and perform other tasks; they can also cooperate with other programs on the Web.

HTML:-

Abbreviation for Hypertext Markup Language. A standard hypertext language used to create . World Wide Web pages and other hypertext documents. When you access an HTML document, you will see a mixture of text, graphics, and links to other documents. If you select a link, the related document will open automatically, no matter where that document is located. Hypertext documents often have the file-name extension.html.

Hypertext:-

A method of presenting information so that it can be viewed by the user in a non-sequential way, regardless of how the topics were originally organized.

Hypertext was designed to make a computer respond to the nonlinear way that human's link and access information-by association, rather than the linear organization of

film, books, and speech. In a hypertext application, you can browse through the information with considerable flexibility, choosing to follow a new path each time you access the information. When you click on a highlighted word, you activate a link to another hypertext document, which may be located on the same Internet host or can be on a completely different system thousands of miles away.  

These links depend on the rare that the document originator used when assembling the document; unfortunately, many links turn into dead ends.