Networking Basics - Networks & OSI Model

Any object that has a computer / microcontroller

Microcomputer on a single chip - used to control some devices: automobile engine / toy

Property of representing values as discrete (often binary) numbers rather than a continuous spectrum

Multiple computers & other devices connected to each other to share information

Representation of facts/data in a formal manner capable of being communicated/manipulated by some process

Conversion of data / information from analog to digital binary

Code that uses the binary digits 0 & 1 - usually in groups of 8 to represent characters, machine instructions, or other data

Being in 1 of 2 mutually exclusive states: such as on or off - binary states are often represented as 1 & 0

Smallest unit of storage in digital computer, consisting of binary digits

Unit of computing storage equal to 8 bits - can represent any of 256 distinct values

Any type of information that can be digitized & transmitted over a network: text, files, photographs, videos, voice calls

Enable digital devices to communicate with each other by sharing digital data

Process of converting: written text, voice, video into binary code

Computers & other digital devices connected to each other to share resources

Electronic device that is outside the computer’s system unit (external to the computer’s enclosing case) but used by the computer to which it is connected: printer / scanner

Any computer attached to a network

Networks that use various types of network cables to carry signals from device to device

Electromagnetic spectrum in which radio waves are transmitted

Interconnection of computers that are in relatively close proximity to each other, such as within a building

Small office / home office

Rate of data flow in digital networks typically measured in bits per second; bit rate

Delay or a period between the initiation of something & the occurrence

Set of formal rules describing how to transmit / exchange data, especially across a network

Network typically attached to a LAN to provide mobility to local users by way of wireless RF connection