COMPUTER COMMUNICATION NETWORK
1)Disha Lambhate(IT39)
2)Isha Mendhekar(IT40)
3)Mahek Tiwari(IT41)
4)Riya Girhepunje (IT42)
5)Arya Bharne (IT52)
6)Nagesh Belkar (IT59)
7)Nirjal Hedaoo(IT62)
8)Rohan Dohe(IT66) Guided By:- Prof. Mohhammad Hassan
9)Rutvik Turak(IT67)
10)Vaibhav Sakharkar(IT72)
CONTENTS
➢Introduction to LAN
➢MAN
➢WAN
➢Intranet & Internet system
➢Role of Computer networks
➢Broadband
➢ISDN
➢VSAT
Introduction To LAN
A Local Area Network (LAN) is a computer network that
interconnects computers within a limited area such as a
residence,school,laboratory, university campus, or office building.
LANs are used for sharing resources such as files, printers,
applications, and internet connections among connected devices.
LANs play a crucial role in modern computing environments by
providing a means for devices to communicate and share
resources efficiently within a local area.
Advantages
Cost-Effectiveness: LANs can be cost-effective compared to wide area
networks (WANs) because they typically involve less infrastructure and
can be set up using inexpensive Ethernet cables and networking
equipment.
High-Speed Data Transfer: LANs often provide high-speed data transfer
rates, especially when using technologies like Ethernet or Wi-Fi, which
allows for rapid communication between devices.
Disadvantages
Limited Coverage Area: LANs are limited in geographic coverage and are
typically confined to a single building or campus.
Security Concerns: LANs are susceptible to security threats such as
unauthorized access, data breaches, and malware attacks
Network Congestion: In densely populated LAN environments, network
congestion can occur, leading to slower data transfer speeds and
decreased performance for connected devices.
MAN
A metropolitan area network, or MAN, is a high-capacity network that connects
several buildings over a city or big campus. It is smaller than a WAN but larger than
a LAN, allowing for smooth resource sharing and data movement inside a city.
MANs play a vital role in sustaining urban infrastructure and improving
communication by utilizing technologies like fiber optics and Ethernet for
effective connectivity
Advantages of MAN
1.High bandwidth for fast data transfer.
2.Efficient resource sharing.
3.Improved connectivity and collaboration.
4.Cost-effective compared to WANs.
5.Centralized management for easier
maintenance.
Disadvantages of MAN
1.Limited geographic range
2.Complex implementation and
maintenance.
3. Vulnerability to localized disruptions.
4. Higher initial setup costs.
5. Security concerns due to
potential breaches.
WAN
A wide-ranging network that links several local area networks (LANs) or
metropolitan area networks (MANs) is known as a wide-area network
(WAN). It makes use of a variety of communication technologies, including
fiber optics, satellite links, and leased lines, to facilitate long-distance data
transport. WANs are essential for enabling resource sharing and
communication across geographically separated locations, serving as the
basis for internet access and worldwide connection.
Advantages of WAN
1.Global connectivityresource
2.sharingcentralized data
3.managementcost efficiency
Disadvantages of WAN
1.High initial setup costs security
2.concerns dependency on service
providerscomplexity
Intranet & Internet system
Intranet
An intranet is a private network that functions inside a single
or group of organisations in broadband communication. The
same technologies as the internet are used, but access is
limited to those within the organisation and frequently needs
authentication.An intranet is a safe and effective platform for
internal communication, teamwork, and information exchange
within an organisation in the era of broadband
communication.
Advantages of intranet
1.Helps employees find information.
2.Simplifies employee onboarding.
3.Provides organizational clarity.
4.Encourages knowledge sharing.
5.Reinforces your brand and values.
6.Reduces emails and meetings.
Disadvantages of intranet
1.Usage: Depending on the type of intranet arrangements and the number
of clients, the cost of actually implementing intranets is typicallxpensive
2.Unpredictability
3.Safety
4.Updates on Onboarding
Internet
The internet system refers to the global network of interconnected
computers and devices that communicate using standardized
protocols.It encompasses the infrastructure, protocols, and services
that enable the exchange of data and information across the world.
The web framework could be a arrange of interconnected
computers and gadgets that communicate utilizing standardized
conventions. It permits for the trade of information, data, and
administrations all inclusive. This framework comprises different
components such as equipment framework, computer program
conventions, information centers, and end-user gadgets, all
working together to encourage communication and data sharing
over the world.
Advantages
Cost Reduction: Reduces costs by centralizing resources, allowing for shared
access to expensive hardware and software.
Improved Efficiency: Enhances productivity by streamlining processes,
enabling faster data transfer, and providing remote access to resources.
Centralized Data Management: Simplifies data management and backup
processes by centralizing data storage and access.
Disadvantages
Security Risks: Increases vulnerability to security breaches, including
unauthorized access, data theft, and malware attacks.
Dependency on Infrastructure: Reliance on network infrastructure makes
systems susceptible to disruptions due to hardware failures or network outages.
Complexity: Requires skilled personnel for setup, configuration, and
maintenance, leading to increased complexity and potential for errors.
Role of Computer Network
The role of computer networks is multifaceted and fundamental in
today's interconnected world. Here are some key aspects:
Communication: Computer networks facilitate communication by
allowing devices to exchange data, messages, and
information.Networks enable various forms of communication,
including email, instant messaging, video conferencing, and VoIP
(Voice over Internet Protocol).
Data Sharing and Collaboration: Computer networks support data
sharing and collaborative work environments. They allow multiple
users to access and work on the same documents, files, and
projects from different locations simultaneously.
Advantages
●Global Connectivity: Enables instant communication and collaboration
across the globe.
●Access to Information: Provides vast resources and knowledge on
various topics.
●Convenience: Facilitates online shopping, banking, and access to
services from anywhere.
Disadvantages
●Security Risks: Exposes users to malware, phishing, and data breaches.
●Privacy Concerns: Raises issues about data privacy, tracking, and
surveillance.
●Digital Divide: Creates inequalities in access to information and
opportunities.
Broadband
Broadband is the term used to describe reliably available high-speed
internet connectivity that is quicker than dial-up connections. It gives users
the ability to do a wide range of online tasks, such as social media surfing,
gaming, streaming video, remote work, distant learning, and more. Many
technologies, including DSL, cable modem, fiber-optic cable, wireless,
satellite, and broadband via power lines, can be used to deliver
broadband. It is now essential for modern communication, commercial
operations, education, entertainment, and more due to its speed and
extensive availability.
ISDN
ISDN is a set of standards and techniques in telecommunication that
enable the digital transmission of data, voice, video, and other
services simultaneously across a public telephone network.
Coordinated Services Speech and data are sent over a digital link by
the Digital Network, often known as ISDN, which is a circuit-controlled
telephone network. These lines of digital data may be copper wires.
Digital technology was never fully standardized, despite the inventors'
intention to replace analog landline technology with it. The Integrated
Services Digital Network, or ISDN, has a number of advantages over
analog networks. In its simplest form, it permits two simultaneous
phone calls to be made on the same line.
Advantages :
Clear Communication: ISDN gives you better quality phone calls
and faster internet because it uses digital signals, like a super
clear connection.
Do More at Once: You can talk on the phone and use the internet
at the same time without slowing down either one.
More Reliable: ISDN is less likely to have problems or get fuzzy
compared to regular phone lines.
Disadvantages :
Costly: ISDN can be more expensive than regular phone lines.
Limited Availability: It might not be available everywhere,
especially in rural areas.
Technology Shift: With newer technologies like fiber optic
internet becoming more common, ISDN might seem outdated in
comparison.
VSAT
Very Small Aperture Terminal is referred to as VSAT. This compact earth
station uses a satellite communication network to send and receive voice,
data, and video transmissions.
Advantages
1.Telecommunications: In remote locations, VSAT provides internet
connectivity, phone service, and video conferencing capabilities.
2. Banking and Finance: It guarantees branch connectivity, ATM networks,
and secure communication for financial activities
3. Government and Military: In defense and governmental activities, VSAT
enables secure communication, surveillance, and remote monitoring.
Disadvantages
1.Global coverage: Fills in connectivity gaps by reaching rural and
inaccessible areas.
2.Scalability: Fits both large- and small-scale distribution and operations.
3.High reliability: Is less reliant on physical infrastructure and can continue
to operate even in the event of damage or cable cutting.
THANK YOU
