It is a group of devices connected with each other.
Types of network
PAN(Personal area network)
The connection between personal devices like laptops to smart devices is called PAN.
Connection of devices
It stands for CAMPUS AREA NETWORK, it is greater than LAN and smaller than MAN.
It stands for Metropolitan Area Network, it is greater than CAN and smaller than WAN.
It stands for Wide Area Network, it is a collection of MAN.
Modem(modulator/demodulator) device that enables a computer to transmit data over telephone lines. this device converts the digital signal into an analog signal and vice versa.
This device is used to connect several computer devices together.
This device is used to connect several computer devices together over a network, it is used on long network lines, it receives, and retransmit electronic signals.
This device is used to connect computers to the internet.
This electronic device connects multiple individual networks.
This device makes reliable communication between different configuration networks.
Protocol means rules and regulations, define rules of communication between network devices.
This protocol responsible to send and receive data from one computer to another in the internet.
Data transfer over internet in the form of packet where the address of sender and receiver labelled in packet.
TCP(Transmission control packet)
This protocol puts the packet in the right order.
It is a set of rules for transferring files(text, graphics, images, sound, videos, etc.)
Twisted pair cable
Twisted pair cable is made up of two plastic insulated copper wire that are twisted on each other to make a single wire.
It is made of hard copper wire, covered by PVC, coaxial cable able to transfer high frequency signals.
Optical fiber cable
These wires made of ultra thin glass fibres, optical fiber cable are able to transmit light signals.
It is short-range wireless technology used for communication between devices, it has range about 10m or other.
This technology uses infrared light to send data. we are using this technology in every day life like TV/AC remotes, and wirelss speakers. infrared light transmit data with air but unable to penetrate the walls.
This is very popular technology which allow electronic devices transmit data over network and device can connect with internet via access point that is called hotspot .
it is a collection of interconnected networks, it is used by any company or and organization, this network is only used by members of that organisation and not accessible by outside one.
it is network of networks, it is publicaly accessible, and transmit data using IP.
Amount of data transmitted in certain amount of time, Generally bandwidth expressed as bps, kbps, mbps, gbps.
Internet service provide, which provide services to use internet.
Collection of web pages.
It is a special website that collection information from different resources.
It is single page in website, that is accessible using browser only.
First page of any website is also called home page.
It is an address what you type at browser to access the resource.
Numbering addressing system / ip address
Combinatioin of unique number is used to design the address of website, this unique number is known as IP address, The IP address can be use directly instead of website letter name. it is combination of four numbers and each number is separated with period (.) each number can be zero to 255.
for example 18.104.22.168
Letter addressing system
It is a system which provide unique name to the website, this is called DNS (domain name system)
DNS translates website hostnames into human readable language. for example www.capscom-technology.com will automatically converted into ip address, so as users we just need to remember these names of website instead of combination of numbers, which is almost impossible to remember.
Last two/three letter of any domain represent kind of organisation.
Types of apps
Native apps are developed for specific platform like only android or only ios, these apps are much faster than hybrid apps.
Hybrid apps are developed for multi platform like one app for both android and ios.