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Bluetooth
Bluetooth is a technology that enables wireless communication between a
low-power consumption devices within a short range (1 meter, 10 meters, 100
meters). It facilitate for different devices to communicate with each other when they
are in a required range. The latest version of bluetooth, Bluetooth 5.0 technology
provides data transfer speed up to 2 Mbps.
Bluetooth
It provides a way to connect and exchange information between devices such
as mobile phones, telephones, laptops, printers, personal computers, GPS receivers (Global
Positioning System) through 2.4 GHz short range radio frequency bandwidth.
PROTOCOL
Protocol is a set of rules that governs the communication between the computers on a network.
Certain network protocols and standards are to be followed in order to ensure that your computer
can communicate with another computer over a network.
Different types of protocols used for different operations on the Internet are:
HTTP (Hyper Text Transfer Protocol): It is a set of rules that defines how the web pages
transfer data over the Internet.
HTTPS (Hyper Text Transfer Protocol Secure): It is secure version of HTTP. The information
is converted into code to prevent unauthorised access. Nowadays, most of the websites uses
the HTTPS protocol instead of HTTP.
FTP (File Transfer Protocol): It is a set of rules that allows file uploading and downloading
from the other computers over the Internet.
TCP/IP (Transmission Control Protocol/Internet Protocol): It is a network protocol that
defines how the information or messages are routed from one end of a network to the other.
POP3 (Post Office Protocol Version 3): It is an Internet standard protocal that allows e-mail
clients to retrieve e-mail messages from an e-mail server.
IMAP (Internet Message Access Protocol): It is an e-mail protocol that stores e-mail
messages on a mail server and allows the user to view, access and manipulate the messages
on the mail server from their computer.
SMTP (Simple Mail Transfer Protocol): It is an e-mail protocol for sending e-mail messages
across the Internet.
Recap
A computer network means a system of interconnected computers.
The components needed for a network are Network Interface Card, networking cable,
hub or a switch and router.
Various types of topologies used in a network are bus, star, tree, ring and mesh.
There are two types of computer network architectures – peer-to-peer network and
client-server network.
It is the most popular wireless communication technology used for homes, private
business LANs and public hotspots.
Computer Networking 21

