Page 18 - Trackpad_V1_Book 8_Flipbook
P. 18
We can group the communication media into two categories: Guided media and unguided
media. The guided media includes cables and unguided media includes waves.
Unguided media are categorised into two types: long-distance wireless and short-distance
wireless media.
LONG-DISTANCE WIRELESS MEDIA
It can support communication over longer distances, up to thousands of kilometers. Long-distance
wireless communication media includes microwaves, radio waves, and satellites.
Microwave: It refers to microwave radio transmission which is commonly used to send signals
from the earth to the satellites and vice-versa. These wavers are also used for deep space
communications, radar systems, radio astronomy, etc.
Radio waves: These waves are commonly used for long-distance communication or
sending messages, information for communication for aircraft or naval communication. The
information is sent in the form of electromagnetic waves.
SHORT DISTANCE WIRELESS MEDIA
Wi-Fi: It refers to Wireless Fidelity, which lets
you connect to the Internet without any wired
connection from your PC. It is a popular form
of wireless connection as it does not require
cables.
It can be used to get connected through a
variety of devices like laptops, digital
cameras, smartphones, gaming consoles,
etc. To connect to a Wi-Fi network a hotspot
is required. The hotspot acts as a gateway to the Internet, you need to connect to a hotspot to
be able to connect to the Internet.
Bluetooth: This wireless technology
creates a small wireless network called
Personal Area Network between personal
computers and peripheral devices
such as a printer, mouse, keyboard,
headphones, etc. It is used to exchange
data over a short distance from fixed or
mobile devices.
16 Trackpad (Version 1.0)-VIII

