Key Terms – The internet and web design
1. Protocol: is a convention or standard that controls or enables the connection, communication, and data transfer between two computing endpoints.
2. TCP/IP: The internet Protocol IP works by exchanging groups of information called packets. Packets are short sequences of bytes consisting of a header and a body. The header describes the packet’s destination, which routers on the internet use to pass the packet along, generally in the right direction, until it arrives at its final destination.
Http: Hypertext Transfer Protocol is a communications protocol for the transfer of information on intranets and the World Wide Web. Its original purpose was to provide a way to publish and retrieve hypertext pages over the internet.
SMTP: Simple Mail Transfer Protocol is the standard for e-mail transmissions across the internet.
FTP: In computing, the File Transfer Protocol is a network used to transfer data from one computer to another through a network, such as over the internet.
3. GUI: Graphical User Interface is a type of user interface which allows people to interact with a computer and computer – controlled devices.
4. Parallel transmission is the transmission of several bits at the same time, with each bit transmitted over a seperate wire. Serial transmission is the sequential transmission of singal elements of a group repersenting a character or other entity of data. The difference between the two is that parallel transmission transmits more than one bit at a time and serial transmission only transmits one bit a time.
5. URL: Uniform Resource Locator (URL), also known as Universal Resource Locator, is a technical, Web-related term used in two distinct meanings: In popular usage and many technical documents, it is a synonym for Uniform Resource Locator(URI). In popular usage, it means a web page address.Strictly, it is a compact string of characters for a resource available via the Internet. The idea of a uniform syntax for global identifiers of network-retrievable documents was the core idea of the World Wide Web. In the early times, these identifiers were variously called "document names", "Web addresses" and "Uniform Resource Locators". These names were misleading, however, because not all identifiers were locators, and even for those that were, this was not their defining characteristic. Nevertheless, by the time the RFC 1630 formally defined the term "URI" as a generic term best suited to the concept, the term "URL" had gained widespread popularity, which has continued to this day.
6.In communications, error detection refers to a class of techniques for detecting garbled messages. Two of the simplest and most common techniques are called checksum and CRC. More sophisticated strategies include MNP and CCITT.
