2. What is Internet?
• Internet is a collection of a large number of
independent computer networks interconnected
using standard protocol TCP/TP(Transfer Control
Protocol /Internet Protocol) to serves billions of
users.
• Internet is a network of networks consisting of
thousands of private, public, business, academic,
and government networks.
3. What is Internet?
• The Internet or “net” (network of networks) is the
largest network in the world that connects billions
of computer users.
• Internet is a collection of millions of computers
around the world that are all connected to one
another. It is a global network of computers.
• The word internet comes from combination
between “interconnection” and “network”
4. Brief History of Internet
• The birth of ARPANET (1969)
• TCP/IP and the birth of the internet protocol suite
(1970s)
• Usenet and email’s development (1980s)
• The World Wide Web (1990s)
• E-commerce and the dot-com boom (late 1990s)
5. Brief History of Internet
• The emergence of Web2 and social media (Early
2000s)
• The rise of internet beyond late 2000s
• Mobile internet and the app revolution (2010s)
6. Vinton Gray Cerf
• Father of the Internet
• The co-designer of the TCP/IP
protocol suites and the
architecture of the Internet.
9. Communication Services
Communication is one of the most
popular services of the internet. We are
using internet-based communication
services every day to contact family and
friends.
11. World Wide Web
Most of us think that the Internet and
WWW are the same but actually not.
Internet is Infrastructure and the Web is
just a service provided on the Internet.
13. Web Services
There are lots of applications built in
various programming languages. Web
services provide a common platform that
allows multiple applications to
communicate with each other whatever
programming languages are used for
making applications.
14. Network Management Services
Network management services are also
one of the important services of the
internet which are helpful for network
managers. Network management services
help in preventing, monitoring,
diagnosing, and solving issues related to
the network
15. Time Services
Network Time Protocol (NTP) is a popular
time service on the internet that helps to
synchronize and set the
computer clock with great precision.
Computer clocks are synced to either
Greenwich Mean Time (GMT) or
Co-ordinated University Time (UTC)
16. Usenet News
Usenet is known as the 'User's Network.'
It is one of the oldest networks where
users can post files to news servers and
other members can access it.
19. What is Network?
• A network consists of two or more computers
that are linked in order to share resources
(such as printers and CDs), exchange files, or
allow electronic communications. The
computers on a network may be linked
through cables, telephone lines, radio waves,
satellites, or infrared light beams.
20. Hardware
• The backbone of any network is the hardware
that runs it. Network hardware includes
network cards, routers or network switches,
modems and Ethernet repeaters. Without this
hardware, computers have no means of
accessing a network.
21. Software
• In order for the hardware to interact with the
network, it needs software to issue commands.
The primary form of networking software is
protocols -- software that instructs network
devices on how to connect to the network and
how to interact with one another.
22. Client Devices
• Client devices are the computers and mobile
devices connected to the network. Client
devices are vital components of a network, as
without clients requiring access the network is
essentially pointless.
23. Connection Media
• Without connections, a network cannot
function. The medium used to connect the
nodes of a network varies with the type of
network. Wired networks will often use
network cables like Category 5 Ethernet
cables, while wireless networks make direct
connections between devices using radio
signals as the medium.
26. Routers
• A router can form a LAN by
connecting devices within a
building. It also makes it
possible to connect different
networks together.
27. Modem
• A modem enables a
computer to connect to the
internet over a telephone
line. A modem converts
digital signals from a
computer to analogue
signals that are then sent
down the telephone line.
28. Hubs, bridges and switches
• Hubs, bridges and switches allow multiple
devices to connect to the router and they
transfer data to all devices on a network. A
router is a more complex device that usually
includes the capability of hubs, bridges and
switches.
29. Hubs, bridges and switches
• Hubs, bridges and switches allow multiple
devices to connect to the router and they
transfer data to all devices on a network. A
router is a more complex device that usually
includes the capability of hubs, bridges and
switches.
30. Hubs
• A hub is the least expensive, least
intelligent, and least complicated of
the three.
• A hub can send or receive
information, but it can't do both at
the same time. This makes hubs
slower than switches. Hubs are the
least complex and the least
expensive of these devices.
31. Bridges
• A bridge is a computer
networking device that builds
the connection with the other
bridge networks which use the
same protocol.
33. Switches
• Switches work the same way as hubs, but they
can identify the intended destination of the
information that they receive, so they send
that information to only the computers that
are supposed to receive it. Switches can send
and receive information at the same time, so
they can send information faster than hubs
can.
• .
36. Wireless access points
• Wireless access points (WAPs) are required to
connect to a network wirelessly. WAPs are
usually built
Editor's Notes
The Internet is linked to our home area by a broad array of wireless and optical networking technologies. The
Internet is a superhighway of information. The Internet's primary focus is to facilitate the sharing of
information.
Interconnected= having all parts connected/link together.. unified
Network= system that connects 2 or more computing devices for sharing/transmitting information.
Arpanet- Advance Reseach Projects Agency Network
ARPANET system is the root of Internet
Usenet= online forum/discussion flatform= newsgroups
www= is a system interconnected public webpages accessible through the internet. The web is not the same as the Internet, Web is one of many application built on top of the internet
E-commerce= online business
Web2= people can publish articles and comments on different platforms,
ARPANET system is the root of Internet
ARPANET system is the root of Internet
Some of the internet communication services are Instant Messaging, Internet Telephony, and VOIP, Email, IRC,
Videoconferencing,
*Instant Messaging (IM) is a type of online chat that offers text communication over the internet in real-time. Because of its real-time nature, it is continuously becoming one of the fastest-growing forms of internet communication services. There are many instant messengers that are providing instant messaging. Some of them are Facebook, Whatsapp, Skype, hangout,qq, WeChat, etc.
*Email stands for Electronic Mail. It is a paperless method of sending messages(text, files, or images) from one person to another or many people at the same time using the internet.
*In traditional telephony, we sents phone calls, fax, voicemail over landlines, but in Internet Telephony that stuff are done using the internet.IN internet telephony our voice which is in analog voice gets converted into digital voice (binary form) which gets the transfer over the internet as IP packets from one phone to another. So, here voice packets are transferred over the network. Internet Telephony is also called IP Telephony (IPT)
*Video Conferencing is Internet Services where two or more people located in separate geographical locations do live audio-video communication. So, it is real-time conferencing services of the internet.
WWW is One of the main services of the internet.
Infrastructure=foundation
Internet is a network of networks and Web is just information present in the network.
So it acts
as a standard medium of a passing message (data) between the client application( made by using android,vue,
angular, react or any frontend language in general) and a server application(java,.net, python, etc in general)
in World Wide web.
Greenwich Mean Time is the yearly average (or 'mean') of the time each day when the Sun crosses the Prime Meridian at the Royal Observatory Greenwich.
Today, almost anything that is available
in the market can be purchased through e-commerce.
Networks are comprised of four basic elements: hardware, software,
protocols and the connection medium. All data networks are comprised of these elements, and cannot
function without them.
Networks are comprised of four basic elements: hardware, software,
protocols and the connection medium. All data networks are comprised of these elements, and cannot
function without them.
Other examples of networking software include connection monitoring software, networking clients and other tools designed to further facilitate your computer's ability to connect to the network.
. In order to classify as a client device, a computer or mobile device must be able to connect to the network and utilize it. Depending on the network, client devices may also require specialized software to establish a connection.
. In order to classify as a client device, a computer or mobile device must be able to connect to the network and utilize it. Depending on the network, client devices may also require specialized software to establish a connection.
Homes and businesses use a router to connect to the internet. A router can often incorporate a modem within the hardware.
Homes and businesses use a router to connect to the internet. A router can often incorporate a modem within the hardware.
. A bridge looks for the receiving device before it sends the message. This means that it
will not send a message if the receiving computer is not there. It will check to see if the receiver has already
had the message. This can help save unnecessary data transfers, which improves the performance of a
network.
