Hypertext publishing:
Hypertext is an approach to information management where the data is stored in network of documents and these documents are connected by links. Here the documents are taken as nodes and links represent the relationship between the documents and nodes. As the documents are known as nodes similarly the links are known as the pointers. The nodes or documents may contain text, graphic, animation, audio video, images or programs. In same system the nodes and system network itself is viewed through browsers and are manipulated, edited with the help of structure editor. We see that different nodes are connected by links or pointers. The node from which the link gets started is known as reference or anchor and the node at which it ends is called referent. The movement between bodes is made possible by activating links which connect related concepts or nodes. Links can be of bi directional providing backward traversals, referential, hierarchical. In some browsers hypertext is a very simple context lies in its ability to produce large, complex, richly connected and cross referenced bodies of information.
Protocols:
protocols are defined as agreed upon rules to be followed upon between two applications. These can also be defined as agreed upon format for transmitting data between two devices. The protocol determines the following.
a. The type of error checking to be used.
b. Data compression method if any.
c. How the sender device indicate that it is sending the data.
d. How the receiver device indicate that it is receiving the data.
The protocol cab be implemented either in hardware or in software.The different types of protocols.
1. tcp/ip transmission control protocol or internet protocol
2. Http Hyper text transfer protocol
3. Smtp Simple mail transport protocol
4. Pop Post office protocol
5. Espp Encapsulating security pay protocol
6. Saip security association identifier protocol
7. Tlsp Transport layer support protocol
8. Egp Exterior gateway protocol
9. Eigrp Enhanced interior gateway routing protocol
10. Grep Generic routing encapsulation protocol
11. Hsrp Hot standby router protocol
12. Igrp Interior gateway routing protocol
13. Ftp file transfer protocol
14. Shttp Security hyper text transfer protocol
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