Learn the Basic Networking and Topology

Computer Communications - A process in which two or more computers or devices transfer’s data, instructions, and information. For successful communications you need the following:

• A sending device - Initiates an instruction to transmit data, instructions, information
• A communications device - Connects the sending device to a communications channel
• A communication channel - Transmission media on which the data, instructions, or information 
• A communications device - Connects the sending device to a communications channel
• A receiving device - Accepts the transmission of data, instruction of information

Uses of computer communication

• Internet - A worldwide collection of networks that links millions of businesses, government agencies, educations, and individual
• Web - Worldwide collection of electronic documents on the internet that users access through Web browser.
• E-Mail - Or Electronic mail, is type of mail message that is sent through the network. 
• Instant messaging - A Real-time internet communication service that notifies you when one or more people are online,then allows you to exchange messages, pictures, files, audio and video.
• Chat rooms - A Real-time typed in conversation that takes place on a computer connected to a network, that also allows you to exchange messages, pictures, files, audio and video.
• Newsgroup - Online areas in which user’s have written discussion about a particular subject.
• Internet telephony - A conversation takes place over the internet using a telephone connected to a desktop computer.
• FTP - Internet standard that permits or allows user to upload or download files.
• Web Folder - Known as HTTP server, allows users publish documents and other files.
• Video conferencing - Realtime meeting over two person, use the internet to transmit audio and video signal.
• Fax Machine or Computer fax/modem - Transmits and receives documents over the phone line.

Network Communications Standard

Data is processed in one of two ways: Analog or Digital. A computer, by contrast, is Digital Which means it can process data in two discrete states: Positive (ON or 1) Non-Positive (OFF or 0). The 1 and 0 represent the two digits used by the binary number system, this system is at the heart of digital computing.

Computer Network - A collection of computers and devices connected together via communications devices and transmission media.