some key terms - the internet and web design

1. Define the term - Protocol
Rules determining the format and transmission data
2. What are the following protocols used for?
TCP/IP - Transmission Control Protocol/Internet Protocol, the suite of communications protocols used to connect hosts on the Internet. TCP/IP uses several protocols, the two main ones being TCP and IP.
HTTP - HyperText Transfer Protocol, the underlying protocol used by the World Wide Web. HTTP defines how messages are formatted and transmitted, and what actions Web servers and browsers should take in response to various commands.
SMTP - Simple Mail Transfer Protocol, a protocol for sending e-mail messages between servers. Most e-mail systems that send mail over the Internet use SMTP to send messages from one server to another; the messages can then be retrieved with an e-mail client using either POP or IMAP.
FTP - File Transfer Protocol, the protocol for exchanging files over the Internet. FTP works in the same way as HTTP for transferring Web pages from a server to a user's browser and SMTP for transferring electronic mail across the Internet in that, like these technologies, FTP uses the Internet's TCP/IP protocols to enable data transfer.
3. What does GUI stand for? graphical user interface. What was used before GUI? The ideas for a GUI computer were thought of long before the technology was even available to build such a machine. One of the first people to express these ideas was Vannevar Bush. In the early 1930s he first wrote of a device he called the "Memex," which he envisioned as looking like a desk with two touch screen graphical displays, a keyboard, and a scanner attached to it. It would allow the user to access all human knowledge using connections very similar to how hyperlinks work. At this point, the digital computer had not been invented, so there was no way for such a device to actually work.
4)What does GUI stand for? Graphical user interface what was used before GUI? Memex
5)There are two methods of data transmission – serial and parallel. Explain the difference between them. Define the term “URL”. Explain the components that make up the url. the diffrence between a serial is that its in a line and a parellel is oppisote to one another. a url means Uniform Resource Locator.
6.In the context of data transmission, what is “error detection”?
error detection refers to a class of techniques for detecting garbled messages, it shows up on the screen to warn people.
7. Name and explain one common method of error detection.
checksum, error-detection scheme in which each transmitted message is accompanied by a numerical value based on the number of set bits in the message.
8.What is HTML and explain why it is important?
Hypertext Mark-up Language, marksup language for web pages.