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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.
Reb t
A computer network is a system of interconnected computers.
The components needed for a network are a Network Interface Card, networking
cable, hub or a switch, and a router.
Network Interface Card allows the computer to connect to a network through a wired
or wireless medium.
Hub is a hardware device that has various boxes to which the computers, printers, and
other networking devices are connected.
Router is a networking device used to connect and facilitate the transfer of data in the
form of packets between two networks.
MODEM stands for MODULATOR–DEMODULATOR. It is a hardware device that allows
a computer to send and receive data over a telephone line.
The different types of networks are PAN, CAN, LAN, MAN, and WAN.
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.
WiFi is the most popular wireless communication technology used for homes, private
businesses, LANs, and public hotspots.
Bluetooth is a technology that enables wireless communication between low-power-
consumption devices within a short range.
Protocol is a set of rules that govern the communication between computers over a
network.
OneOne Touch Learn Section A (Objective)
✓
A. Tick ( ) the correct option.
1. Which of the following describes a computer that is connected to a network?
a. Node b. Device
c. Unit d. Attachment
2. Which of the following is a computer network that spans a city?
a. LAN b. WAN
c. MAN d. CAN
122 iPro (Ver. 4.1)-VIII

