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SIMPLE MAIL TRANSFER PROTOCOL (SMTP)
SMTP stands for Simple Mail Transfer Protocol and is the most popular protocol for transferring
electronic mail via the Internet.
Imagine, computer networks as highways in the sky. What vehicles would travel
on these highways and what destinations would they reach?
POST OFFICE PROTOCOL 3 (POP3)
POP3 stands for Post Office Protocol 3. It is the recent version of the Internet protocol for
receiving e-mails. It allows you to download e-mail messages on your local computer and read
them even if you are offline. When you use POP3 to connect to your e-mail account, messages are
downloaded locally and removed from the e-mail server. It is a client-server protocol.
1. What is the use of LAN?
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2. What is the use of GPS?
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uiz Bee 3. What is the use of HTTP?
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Hashtag
#Protocol: Set of rules or procedures for transmitting data between electronic devices
#Computer Network: Collection of computers and peripheral devices connected by communication
links through which data is transferred in the form of signals
REVISIT
▶ A network is defined as a group of devices that are linked together to share information, data and resources.
▶ A computer network is a collection of computers and peripheral devices (the network components) connected
by communication links (wired or wireless) through which data is transferred in the form of signals.
▶ The components needed for a network are Network Interface Card, hub or a switch, router, modem,
networking cable, gateway, etc.
▶ Based on the architecture, networks are classified into client-server network and peer-to-peer network.
▶ Topology means the arrangement of computers in a network. The five basic topologies used for creating a
network are Bus, Ring, Star, Tree, and Mesh.
▶ Protocols are rules and standards that are to be followed to ensure secure transfer of data from one
computer to another over the Internet.
Networking Concepts 19

