Ivailo Chakarov Web Technologies Basic Internet Terminology.

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Presentation transcript:

Ivailo Chakarov Web Technologies Basic Internet Terminology

Ivailo Chakarov We use the Internet for: Searching for information Shopping Downloading files Uploading files Chats (using web-cams) Games Web Technologies

Ivailo Chakarov Terms: Intra = Inside(Intranet) Inter = Between(Internet) Web Technologies

Ivailo Chakarov Web Technologies Sneakernet

Ivailo Chakarov Web Technologies Dial-up Internet modem

Ivailo Chakarov Bit = Binary digit Computers understand bits A bit represents: –0 or 1 –On or Off –True or False A bit is the smallest unit of storage (in computing) Example: (8 bits long number) Web Technologies Binary code

Ivailo Chakarov Web Technologies Signals Analogue signal Digital signal -a codified message a transmitter encodes a message into a signal the signal is carried over a communication channel the signal is received by a receiver -can be digital or analogue

Ivailo Chakarov -Modulator/Demodulator Modulation (binary signals) Demodulation (signals binary) Web Technologies Modems

Ivailo Chakarov Cold War USSR v. USA USA created ARPA ARPA wanted to create computer-based air defence systems. A network needed to be created that is robust and survivable. In October 1969 the APRA-Net was created (thus the Internet was initiated) Web Technologies History of Internet

Ivailo Chakarov Web Technologies Dial-up Internet modem

Ivailo Chakarov Computer/PC Modem or Network card Operating System Web browser Internet Service Provider Web Technologies Connection Requirements

Ivailo Chakarov a business or organization that sells to consumers access to the Internet and related services. (Wikipedia) Web Technologies Internet Service Provider (ISP)

Ivailo Chakarov a software program that manages the hardware and software resources of a computer. (Wikipedia) examples: –Windows –Unix –Linux –Mac OS Web Technologies Operating System

Ivailo Chakarov a device that modulates an analogue signal to encode digital information, and demodulates such a signal to decode the information. (Wikipedia) can be: –Internal –External Web Technologies Modem

Ivailo Chakarov a network card, network adapter or NIC (network interface card) is a piece of computer hardware designed to allow computers to communicate over a computer network (Wikipedia) can be: –Internal –External Web Technologies Network Card

Ivailo Chakarov a piece of software used to view web pages on the World Wide Web examples: –Microsoft Internet Explorer –Netscape Navigator –Opera –Mozilla Firefox –Safari –Browzar Web Technologies Web browser