Packet switching
Converged networks
Hosts
Client server
Host Addressing
Default gateways
IP address configuration
- dynamic
-static
DNS
- gateway ip
- subnet mask : used by host to determine which network does ipv4 belong to
Cables and media
- devices
- media
- services
Signal
Network interface hardware
Electronic hardware that provide connection to network medium
- Ethernet NIC
- Optical fiber NIC
- Wifi NIc
Bandwidth
Bandwidth is the specified (or ideal maximum) capacity of a medium to carry data.
Digital bandwidth measures the amount of data that can flow from one place to another in a given amount of time
Throughput
Throughput is the measure of the actual transfer of bits across the media for a given period.
Goodput
Goodput is a term sometimes used to describe the transfer rate of actual, usable data.
Mobile wireless technologies
Electromagnetic waves
Radio waves
Wireless technologies use electromagnetic waves to carry information between devices.
Electromagnetic waves (electromagnetic radiation) travel through space-time (i.e. they don’t need a medium like water or air), and they carry electromagnetic radiant energy.
Because they are waves they have a frequency and wavelength. Visible light is part of the electromagnetic spectrum, as are X-rays and microwaves. The part of the spectrum used by mobile wireless technologies are radio waves and microwaves.
Radio waves are the waves of the spectrum that have the longest wavelength and the shortest frequency.
Cellular data wireless systems
Cell phone and data technologies have been labelled in ‘generations’ - G1, G2, G3, G4, and G5 - but these are just marketing names for groups of technologies, not specified standards.
CDMA
GSM
GPRS
WCDMA
HSPA
OFDM
MIMO
LTE
WiFi
Wi-Fi refers to the group of radio frequency (RF) standards. Wi-Fi operates in the unlicensed 2.4 and 5 Gigahertz (Ghz) ranges of the RF spectrum.
Antennae
Wireless Access Point (WAP)
WiFi Standards
Bluetooth
Near-field communication (NFC)
Thanks to EDX.ORG
IOT-Network