What is Networking?
A computer network is defined as the interconnection of two or more computers. It is done to enable the computers to communicate and share available resources.
Application:
• Sharing of resources such as printer.
• Sharing of expensive software's and database.
• Communication from one computer to another computer.
• Exchange of data and information among users via network.
• Sharing of information over geographically wide areas.
This document discusses different types of computer networks. It defines a computer network and describes its components and benefits. It then explains three main types of networks: local area networks (LANs) which connect computers in a small area like an office; metropolitan area networks (MANs) which connect multiple LANs across a city; and wide area networks (WANs) which connect LANs across a large geographic region or globally via the internet. Each network type is defined and their advantages and disadvantages are outlined.
A computer network connects two or more computers to allow sharing of resources and communication. It can be a local area network (LAN) spanning a single building, or a wide area network (WAN) across continents. The main components are computers, cables or wireless connections, network cards, and network operating software. Computer networks provide benefits like sharing hardware and software, communication, and accessing data remotely, but also have disadvantages such as high installation costs and potential points of failure. Networks can be organized as peer-to-peer, with each computer sharing directly, or client-server with dedicated server computers providing centralized resources to client computers. Common network types include LANs, WANs, MANs, PANs, and
#network #types of network
COMPUTER NETWORKING FUNDAMENTALS
SLIDE PPT CONSIST OF
definition,its components,advantages,Disadvantages,switching techniques,network architectures, and Types of Networks.
If you are interested in computer networking and more topics related to computers.
Must watch my youtube channel TECHISEASY
Types of Computer Networks bba 1st sem.pptxPankaj Chandel
There are various types of computer networks available. We can categorize them according to their size as well as their purpose.
The size of a network should be expressed by the geographic area and number of computers, which are a part of their networks. It includes devices housed in a single room to millions of devices spread across the world.
Some of the most popular network types are:
PAN
LAN
MAN
WAN
A computer network is defined as the interconnection of two or more computers. It is done to enable the computers to communicate and share available resources.
Components of computer network
Network benefits
Disadvantages of computer network
Classification by their geographical area
Network classification by their component role
Types of servers
This document provides an overview of computer networks and networking. It defines what a computer network is and discusses the need for networking in terms of file sharing, hardware sharing, application sharing, and user communication. It then covers different types of networks including personal area networks, storage area networks, system area networks, local area networks, metropolitan area networks, and wide area networks. Finally, it discusses wireless networking technologies and applications of computer networks.
This document provides an introduction to basic computer network concepts. It defines what a computer network is and describes different types of networks including LAN, MAN, WAN, PAN and CAN. It explains the differences between these networks in terms of geographical area covered, ownership, design/maintenance and communication medium used. The document also discusses network topologies like bus, star, ring and mesh. It describes common network devices, applications of networks for resource and information sharing, and different types of servers in a client-server network model.
What is Networking?
A computer network is defined as the interconnection of two or more computers. It is done to enable the computers to communicate and share available resources.
Application:
• Sharing of resources such as printer.
• Sharing of expensive software's and database.
• Communication from one computer to another computer.
• Exchange of data and information among users via network.
• Sharing of information over geographically wide areas.
This document discusses different types of computer networks. It defines a computer network and describes its components and benefits. It then explains three main types of networks: local area networks (LANs) which connect computers in a small area like an office; metropolitan area networks (MANs) which connect multiple LANs across a city; and wide area networks (WANs) which connect LANs across a large geographic region or globally via the internet. Each network type is defined and their advantages and disadvantages are outlined.
A computer network connects two or more computers to allow sharing of resources and communication. It can be a local area network (LAN) spanning a single building, or a wide area network (WAN) across continents. The main components are computers, cables or wireless connections, network cards, and network operating software. Computer networks provide benefits like sharing hardware and software, communication, and accessing data remotely, but also have disadvantages such as high installation costs and potential points of failure. Networks can be organized as peer-to-peer, with each computer sharing directly, or client-server with dedicated server computers providing centralized resources to client computers. Common network types include LANs, WANs, MANs, PANs, and
#network #types of network
COMPUTER NETWORKING FUNDAMENTALS
SLIDE PPT CONSIST OF
definition,its components,advantages,Disadvantages,switching techniques,network architectures, and Types of Networks.
If you are interested in computer networking and more topics related to computers.
Must watch my youtube channel TECHISEASY
Types of Computer Networks bba 1st sem.pptxPankaj Chandel
There are various types of computer networks available. We can categorize them according to their size as well as their purpose.
The size of a network should be expressed by the geographic area and number of computers, which are a part of their networks. It includes devices housed in a single room to millions of devices spread across the world.
Some of the most popular network types are:
PAN
LAN
MAN
WAN
A computer network is defined as the interconnection of two or more computers. It is done to enable the computers to communicate and share available resources.
Components of computer network
Network benefits
Disadvantages of computer network
Classification by their geographical area
Network classification by their component role
Types of servers
This document provides an overview of computer networks and networking. It defines what a computer network is and discusses the need for networking in terms of file sharing, hardware sharing, application sharing, and user communication. It then covers different types of networks including personal area networks, storage area networks, system area networks, local area networks, metropolitan area networks, and wide area networks. Finally, it discusses wireless networking technologies and applications of computer networks.
This document provides an introduction to basic computer network concepts. It defines what a computer network is and describes different types of networks including LAN, MAN, WAN, PAN and CAN. It explains the differences between these networks in terms of geographical area covered, ownership, design/maintenance and communication medium used. The document also discusses network topologies like bus, star, ring and mesh. It describes common network devices, applications of networks for resource and information sharing, and different types of servers in a client-server network model.
The document discusses basic concepts of computer networks including definitions, applications, components, benefits, disadvantages, and classifications. It defines a computer network as interconnecting two or more computers to enable communication and sharing of resources. Networks can be classified by their geographical area, such as local area networks (LANs), wide area networks (WANs), personal area networks (PANs), campus area networks (CANs), and metropolitan area networks (MANs). Networks can also be classified by their component roles, such as peer-to-peer networks and client-server networks. Common network server types include file servers, printer servers, application servers, message servers, and database servers.
Networks and telecommunication technologies basicsDavid Kibuki
The document provides an overview of network and telecommunication technologies. It discusses how networks have evolved from single-user PCs to complex multi-user systems connecting organizations. The main types of networks covered include local area networks (LANs), wide area networks (WANs), wireless networks, metropolitan area networks (MANs), and personal area networks (PANs). The document also describes common network structures like server-based, client/server, and peer-to-peer networks. Finally, it discusses popular network topologies such as bus, star, tree and mesh configurations.
Chapter 2 - Types of Computer Networks-converted e.pptxtahaniali27
Computer networks connect two or more computers that can be located anywhere geographically. There are different types of networks based on geographical size: personal area networks (PANs) cover a small area like a room; local area networks (LANs) are within a building or campus; metropolitan area networks (MANs) span a city; and wide area networks (WANs) are geographically spread, such as across a country or globe. Networks allow for resource and information sharing, communication, and distributed processing between connected devices and users.
This document provides an overview of basic computer network concepts. It defines a computer network as the interconnection of two or more computers to enable communication and sharing of resources. The key components of a network include computers, cables, network interface cards, switches, and operating systems. Networks provide benefits like sharing of hardware resources, software, data, and connectivity. Some disadvantages are high installation costs and failure risks. Networks can be classified by their geographical area as local area networks (LANs), wide area networks (WANs), personal area networks (PANs), campus area networks (CANs), or metropolitan area networks (MANs). They can also be classified by component role as peer-to-peer, client-server, or
This document defines and describes different types of computer networks. It explains that a computer network connects computers together to share resources. There are three main types of networks based on size: local area networks (LANs) which connect computers within a single site or building; metropolitan area networks (MANs) which connect LANs over a larger geographic area like a city; and wide area networks (WANs) which interconnect LANs across geographic distances that could span multiple cities or countries. The key differences between these network types are their size, connection technology, and purpose.
This document discusses computer networking and different types of networks. It defines a computer network as interconnecting two or more computers to enable sharing of resources and communication. The key types of networks discussed are:
- Personal area networks (PAN) which connect devices around an individual.
- Local area networks (LAN) which connect computers in a small physical area like an office.
- Wide area networks (WAN) which connect locations over large distances using phone lines.
- Metropolitan area networks (MAN) which connect networks across a city.
It also outlines some advantages and disadvantages of computer networks and distinguishes characteristics of LANs, WANs, and MANs.
Chapter 2 - Types of Computer Networks.pdfssuser3acfba
This document discusses different types of computer networks. It defines PAN as a network within a small personal area like a room. LAN is a network within a small geographic area like a building or campus. MAN connects LANs within a city. WAN is the largest type of network that spans wide geographic areas like countries or the globe. It provides examples of how networks are used to share resources and communicate between computers anywhere.
This document provides an overview of computer networking. It defines networking as interconnecting two or more computers to enable communication and sharing of resources. It discusses the applications of networking like sharing printers, software, and data. The advantages include increased speed, reduced costs, and improved security. Disadvantages are high installation costs and failure risks. The document classifies networks by geography into personal area networks, local area networks, wide area networks, metropolitan area networks, and campus area networks. It provides examples of each type of network.
A network connects computers and devices to allow sharing of resources and communication. There are three main types of networks: local area networks (LANs) which connect devices within a small area like a home or building; metropolitan area networks (MANs) which connect a city; and wide area networks (WANs) which connect large geographic areas using various media types. LANs allow resource sharing and high-speed communication within an organization, but require memory and add complexity, while MANs and WANs connect larger areas but use different technologies like fiber cables or satellites.
Computer networks can be classified based on their geographical span, interconnectivity, administration, and architecture. They range from personal area networks (PANs) covering 10 meters around a device, to local area networks (LANs) within a building, to metropolitan area networks (MANs) within a city, to wide area networks (WANs) spanning countries, to the largest network, the internet, which interconnects networks worldwide. Networks allow sharing of resources like printers and storage, as well as exchange of information via email, webpages, and other applications.
This document defines and compares different types of computer networks. It describes a local area network (LAN) as connecting devices within a limited physical area like a home or business through various transmission mediums. A metropolitan area network (MAN) interconnects users within a region larger than a LAN but smaller than a wide area network. A wide area network (WAN) connects LANs across national and international distances using existing telecommunication infrastructure. Finally, a personal area network (PAN) communicates between devices in close proximity, within a room, using wireless technologies like Bluetooth.
Data is raw unorganized facts and details measured in bits and bytes, while information is processed, organized data that provides context and enables decision making. A node is a connection point in a network, and a port allows information to flow between programs. There are several types of computer networks including PAN (personal area networks around an individual), LAN (local area networks connecting devices in a building), MAN (metropolitan area networks spanning a city), and WAN (wide area networks covering a large geographic region).
Networking connects two or more computers to share resources. It involves client computers that access shared resources from server computers via communication links and network interface cards. Common network types include personal area networks (PANs) for connecting devices near a single user, local area networks (LANs) for connecting devices within an office or building, and wide area networks (WANs) for connecting sites over long distances. Network topologies determine how devices are arranged and connected in a network.
This document discusses computer networks, including their types, architectures, topologies, advantages, and disadvantages. It defines different types of networks like PAN, LAN, MAN, and WAN based on size and coverage area. It also explains client-server and peer-to-peer architectures and hybrid networks. Topologies like bus, star, ring, mesh, tree and hybrid are covered. Advantages include improved communication, but disadvantages are security risks and increased reliance on computers.
A computer network connects two or more computers allowing people to share files, printers, and other resources. The basic components of a network include computers, network interface cards, connection medium like wires or cables, and network operating system software. There are different types of networks including local area networks (LANs) within a building, wide area networks (WANs) connecting multiple LANs over long distances, and metropolitan area networks (MANs) within a city. The Open Systems Interconnection (OSI) model describes how network components work together in layers to enable communication. Ethernet is a common physical layer technology used to set up LANs.
This document provides a summary of general approaches to communication within a network, classifications of networks, and modern networking technologies. It discusses peer-to-peer and client-server models, defines local area networks (LANs), metropolitan area networks (MANs), and wide area networks (WANs). It also outlines current technologies including software defined networking, multi-cloud, edge computing, the internet of things, artificial intelligence, and 5G networks.
Computer networks allow for the sharing of resources and communication between connected computers. There are several types of networks classified by their geographic reach: local area networks (LANs) cover a small physical area like a home or office; metropolitan area networks (MANs) span an entire city; and wide area networks (WANs) connect computers over long distances ranging from cities to countries. Networks can also be classified by their component roles, including peer-to-peer networks where each computer shares resources directly and client-server networks where some computers act as centralized servers providing resources to other client computers.
A workshop hosted by the South African Journal of Science aimed at postgraduate students and early career researchers with little or no experience in writing and publishing journal articles.
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The document discusses basic concepts of computer networks including definitions, applications, components, benefits, disadvantages, and classifications. It defines a computer network as interconnecting two or more computers to enable communication and sharing of resources. Networks can be classified by their geographical area, such as local area networks (LANs), wide area networks (WANs), personal area networks (PANs), campus area networks (CANs), and metropolitan area networks (MANs). Networks can also be classified by their component roles, such as peer-to-peer networks and client-server networks. Common network server types include file servers, printer servers, application servers, message servers, and database servers.
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The document provides an overview of network and telecommunication technologies. It discusses how networks have evolved from single-user PCs to complex multi-user systems connecting organizations. The main types of networks covered include local area networks (LANs), wide area networks (WANs), wireless networks, metropolitan area networks (MANs), and personal area networks (PANs). The document also describes common network structures like server-based, client/server, and peer-to-peer networks. Finally, it discusses popular network topologies such as bus, star, tree and mesh configurations.
Chapter 2 - Types of Computer Networks-converted e.pptxtahaniali27
Computer networks connect two or more computers that can be located anywhere geographically. There are different types of networks based on geographical size: personal area networks (PANs) cover a small area like a room; local area networks (LANs) are within a building or campus; metropolitan area networks (MANs) span a city; and wide area networks (WANs) are geographically spread, such as across a country or globe. Networks allow for resource and information sharing, communication, and distributed processing between connected devices and users.
This document provides an overview of basic computer network concepts. It defines a computer network as the interconnection of two or more computers to enable communication and sharing of resources. The key components of a network include computers, cables, network interface cards, switches, and operating systems. Networks provide benefits like sharing of hardware resources, software, data, and connectivity. Some disadvantages are high installation costs and failure risks. Networks can be classified by their geographical area as local area networks (LANs), wide area networks (WANs), personal area networks (PANs), campus area networks (CANs), or metropolitan area networks (MANs). They can also be classified by component role as peer-to-peer, client-server, or
This document defines and describes different types of computer networks. It explains that a computer network connects computers together to share resources. There are three main types of networks based on size: local area networks (LANs) which connect computers within a single site or building; metropolitan area networks (MANs) which connect LANs over a larger geographic area like a city; and wide area networks (WANs) which interconnect LANs across geographic distances that could span multiple cities or countries. The key differences between these network types are their size, connection technology, and purpose.
This document discusses computer networking and different types of networks. It defines a computer network as interconnecting two or more computers to enable sharing of resources and communication. The key types of networks discussed are:
- Personal area networks (PAN) which connect devices around an individual.
- Local area networks (LAN) which connect computers in a small physical area like an office.
- Wide area networks (WAN) which connect locations over large distances using phone lines.
- Metropolitan area networks (MAN) which connect networks across a city.
It also outlines some advantages and disadvantages of computer networks and distinguishes characteristics of LANs, WANs, and MANs.
Chapter 2 - Types of Computer Networks.pdfssuser3acfba
This document discusses different types of computer networks. It defines PAN as a network within a small personal area like a room. LAN is a network within a small geographic area like a building or campus. MAN connects LANs within a city. WAN is the largest type of network that spans wide geographic areas like countries or the globe. It provides examples of how networks are used to share resources and communicate between computers anywhere.
This document provides an overview of computer networking. It defines networking as interconnecting two or more computers to enable communication and sharing of resources. It discusses the applications of networking like sharing printers, software, and data. The advantages include increased speed, reduced costs, and improved security. Disadvantages are high installation costs and failure risks. The document classifies networks by geography into personal area networks, local area networks, wide area networks, metropolitan area networks, and campus area networks. It provides examples of each type of network.
A network connects computers and devices to allow sharing of resources and communication. There are three main types of networks: local area networks (LANs) which connect devices within a small area like a home or building; metropolitan area networks (MANs) which connect a city; and wide area networks (WANs) which connect large geographic areas using various media types. LANs allow resource sharing and high-speed communication within an organization, but require memory and add complexity, while MANs and WANs connect larger areas but use different technologies like fiber cables or satellites.
Computer networks can be classified based on their geographical span, interconnectivity, administration, and architecture. They range from personal area networks (PANs) covering 10 meters around a device, to local area networks (LANs) within a building, to metropolitan area networks (MANs) within a city, to wide area networks (WANs) spanning countries, to the largest network, the internet, which interconnects networks worldwide. Networks allow sharing of resources like printers and storage, as well as exchange of information via email, webpages, and other applications.
This document defines and compares different types of computer networks. It describes a local area network (LAN) as connecting devices within a limited physical area like a home or business through various transmission mediums. A metropolitan area network (MAN) interconnects users within a region larger than a LAN but smaller than a wide area network. A wide area network (WAN) connects LANs across national and international distances using existing telecommunication infrastructure. Finally, a personal area network (PAN) communicates between devices in close proximity, within a room, using wireless technologies like Bluetooth.
Data is raw unorganized facts and details measured in bits and bytes, while information is processed, organized data that provides context and enables decision making. A node is a connection point in a network, and a port allows information to flow between programs. There are several types of computer networks including PAN (personal area networks around an individual), LAN (local area networks connecting devices in a building), MAN (metropolitan area networks spanning a city), and WAN (wide area networks covering a large geographic region).
Networking connects two or more computers to share resources. It involves client computers that access shared resources from server computers via communication links and network interface cards. Common network types include personal area networks (PANs) for connecting devices near a single user, local area networks (LANs) for connecting devices within an office or building, and wide area networks (WANs) for connecting sites over long distances. Network topologies determine how devices are arranged and connected in a network.
This document discusses computer networks, including their types, architectures, topologies, advantages, and disadvantages. It defines different types of networks like PAN, LAN, MAN, and WAN based on size and coverage area. It also explains client-server and peer-to-peer architectures and hybrid networks. Topologies like bus, star, ring, mesh, tree and hybrid are covered. Advantages include improved communication, but disadvantages are security risks and increased reliance on computers.
A computer network connects two or more computers allowing people to share files, printers, and other resources. The basic components of a network include computers, network interface cards, connection medium like wires or cables, and network operating system software. There are different types of networks including local area networks (LANs) within a building, wide area networks (WANs) connecting multiple LANs over long distances, and metropolitan area networks (MANs) within a city. The Open Systems Interconnection (OSI) model describes how network components work together in layers to enable communication. Ethernet is a common physical layer technology used to set up LANs.
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Computer networks allow for the sharing of resources and communication between connected computers. There are several types of networks classified by their geographic reach: local area networks (LANs) cover a small physical area like a home or office; metropolitan area networks (MANs) span an entire city; and wide area networks (WANs) connect computers over long distances ranging from cities to countries. Networks can also be classified by their component roles, including peer-to-peer networks where each computer shares resources directly and client-server networks where some computers act as centralized servers providing resources to other client computers.
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This slide is special for master students (MIBS & MIFB) in UUM. Also useful for readers who are interested in the topic of contemporary Islamic banking.
2. What is a computer network?
A computer network, or data network, is a digital telecommunications network which
allows nodes to share resources. In computer networks, computing devices exchange data
with each other using connections (data links) between nodes.
Two or more computers connected together through a communication medium to share
resources is called computer network.
4. Why is a network needed?
Network is nothing but a medium to transfer message or simply say data.
let us clear this with a real life example,
suppose you are travelling by your car from Dhaka to Khulna, in that scenario the road is a
network and your car is the packet travelling through this network and you of course are the
data enclosed in the packet.
5. Application
Sharing of resources such as printers
Sharing of expensive software's and database
Communication from one computer to another computer
Exchange of data and information among users via network
Sharing of information over geographically wide areas.
6. Computer Network
There are two types of computers used in computer
network.
Terminal/Node
The computers, which take part in the activities of the
network, are called terminal or node.
Server
It is a central computer in a network, which controls
all the terminals of the network. It is used to fulfill all the
requests from terminals.
9. Advantages of Computer Network
FILE SHARING – Networks offer a quick and easy way to share files directly.
RESOURCE SHARING – All computers in the network can share resources such as
printers, fax machines, scanners, and modems.
COMMUNICATION –Those on the network can communicate with each other via e-
mail, instant messages, etc.
Flexible Access - Networks allow their users to access files from computers throughout
the network.
Sharing of Information - Computer networks enable us to share data and information
with the computers that are located geographically large distance apart.
10. Types of Network
Based on the size and the coverage area, networks are categorized into the
following types:
Personal Area Networks (PANs)
Local Area Networks (LANs)
Metropolitan Area Networks (MANs)
Wide Area Networks (WANs)
Campus Area Network (CANs)
11. Personal Area Networks (PANs)
PAN stand for Personal Area Network.
A personal area network (PAN) refers to the interconnection
of information technology devices or gadgets within the
environment of an individual user.
Typically the range lies within 10 meters or 33 feet .
These interconnected devices might include laptop
computers, PDAs, cellphones, printers, PCs or other
wearable computer devices.
12. Personal Area Networks (PANs)
Also known as a wireless personal network (WPAN)
Typically uses Bluetooth for connecting devices.
NFC is a newly emerged type of PAN technology.
PANs can be wired, such as USB or FireWire, or they can be
wireless, such as Bluetooth and ultrawideband.
13. Personal Area Networks (PANs)
What can personal networks are do?
Wireless connections between PCs and peripherals can free up
floor space, remove unwanted cables and liberate floor plans.
Connected Bluetooth devices can automatically synchronize
data downloads and uploads, and exchange information.
Mobile employees can use Bluetooth-equipped devices to
access office-based peripherals such as printers, if these
support Bluetooth technology.
14. Personal Area Networks (PANs)
Advantages and disadvantages:
PANs are efficient, cost-effective and convenient. Some
PANs can interact badly with other wireless networking
technologies using the same radio bands.
Bluetooth networks are relatively secure, but have slow data
rates.
Bluetooth is a short-range solution – up to ten meters - and
is not suitable for wireless connection over larger distances.
15. Local Area Networks (LANs)
A local area network (LAN) is a network that connects
computers and devices in a limited geographical area such as
a home, school, office building, or closely positioned group of
buildings.
Each computer or device on the network is a node.
LAN connection speeds can be 10 Mbps or 100 Mbps or 1000
Mbps also.
LAN uses Physical Media (Wired).
16. Local Area Networks (LANs)
Advantages of LAN:
The basic LAN implementation does not cost too much.
It is easy to control and manage the entire LAN as it is
available in one small region.
The LAN configuration is very easy due to availability of
required protocols in the Operating System (OS) itself.
It is easy to share common resources such as printers and
internet line among multiple LAN users.
17. Local Area Networks (LANs)
Disadvantages of LAN
LAN covers small geographical area.
Security issues are big concern as it is easy to have access
to programs and data of peers. Special security measures
are needed to stop unauthorized access.
It is difficult to setup and maintain LAN and requires skilled
technicians and network administrators.
In the server based LAN architecture, if server develops
some fault, all the users are affected.
18. Metropolitan Area Networks (MANs)
It is relatively larger than LAN and extends across a city
or a metropolitan.
It is created by connecting two or more LANs located at
different locations in a city.
19. Metropolitan Area Networks (MANs)
Advantages of MAN
It utilizes drawbacks of both LAN and WAN to provide larger
and controllable computer network.
MAN requires fewer resources compare to
WAN. This saves the implementation cost.
It helps people interface fast LANs together. This is due to easy
implementation of links.
It provides higher security compare to WAN.
20. Metropolitan Area Networks (MANs)
Disadvantages of MAN:
It is difficult to manage the network once it becomes large.
It is difficult to make the system secure from
hackers and industrial espionage.
Network installation requires skilled technicians and network
administrators. This increases overall installation and
management costs.
It requires more cables for connection from one place to the
other compare to LAN.
22. Wide Area Networks (WANs)
A Wide Area Network (WAN) is a computer network that covers a large
geographic area such as a country or the world.
One of the most prominent examples of the existing WAN is the Internet.
Transmission Media
Fibre Optic, Microwave transmission and Satellite.
23. Wide Area Networks (WANs)
Advantages of WAN:
WAN covers larger geographical area. Hence business offices
situated at longer distances can easily communicate.
Like LAN, it allows sharing of resources, application and software
among distributed workstations or users.
The software files are shared among all the users. Hence all will have
access to latest files.
Organizations can form their global integrated network through WAN.
Moreover it supports global markets and global businesses.
24. Wide Area Networks (WANs)
Disadvantages of WAN
Initial investment costs are higher.
It is difficult to maintain the network. It requires skilled technicians and
network administrators.
There are more errors and issues due to wide coverage and use of
different technologies. Often it requires more time to resolve issues due
to involvement of multiple wired and wireless technologies.
It has lower security compare to LAN and MAN due to wider coverage
and use of more technologies.
26. DISTINGUISH BETWEEN LAN-WAN-MAN
PARAMETERS LAN WAN MAN
Ownership of network Private Private or public Private or public
Geographical area
covered
Small Very large Moderate
Design and
maintenance
Easy Not easy Not easy
Communication
medium
Coaxial cable PSTN or satellite links
Coaxial cables, PSTN,
optical fibre, cables,
wireless
Bandwidth Low High moderate
Data rates(speed) High Low moderate
27. Campus Area Network (CANs)
The campus area network is made up of an
interconnection of LAN with limited
geographical area.
Network equipment such as switches,
routers and the transmission media i.e.
optical fibre etc are almost entirely owned
by the campus owner.
28. HOW ARE NETWORKS CATEGORIZED?
Networks are usually classified using three properties:
Architecture
Topology
Protocol
29. CLASSIFICATION OF NETWORK ARCHITECTURE
The architecture of a network is a logical design that determines how the devices in the
network communicate.
The commonly used architectures for computer networks are:
Client-server architecture
Peer-to-peer architecture
Hybrid architecture
30. CLASSIFICATION OF NETWORK ARCHITECTURE
Client-server Architecture
On a network built using the client-server architecture, the
devices communicate to other devices through a central
computer referred to as a server.
The server is a terminal with high processing power, which
provides services for the other computers on the network.
The client is a terminal that accesses the resources available
on a server.
32. CLASSIFICATION OF NETWORK ARCHITECTURE
Peer-to-peer Architecture
On a network built using the peer-to-peer architecture, no
specific distinction exists between a client and a server.
Any node can provide a service as well as send a request
for a service from another node on the network.
The peer-to-peer network architecture allows sharing of
resources, data, and users.
Each node on the network has full control over the network
resources.
35. CLASSIFICATION OF NETWORK ARCHITECTURE
Hybrid Architecture
A hybrid is a composition of two different types of elements.
A hybrid network architecture is created to get the benefits of both, the peer-to-peer
and the client-server architectures, in a network.
36. NETWORK TOPOLOGY
The pattern of interconnection of nodes in a network is called the Topology.
The physical topology of a network refers to the configuration of cables, computers
and other peripherals.
The different types of network topologies that can be used to set up a network are:
Bus Topology
Ring Topology
Star Topology
Mesh Topology
Hybrid Topology
37. BUS TOPOLOGY
The bus topology has each node connected to a main
communication channel.
If one node is faulty this has no effect on the rest of the
network
If the bus is faulty, the whole network is “down”
Advantage = Easy to add new stations
Disadvantage = Each node may have to compete with each
other in order to transmit and receive data
38. RING TOPOLOGY
Signals are sent around the network from node to node.
Data travels in one direction.
If one of the nodes on the network stops, the entire
network stops functioning.
If a communications channel fails, the network fails.
39. STAR TOPOLOGY
All peripheral nodes are connected to a central node.
If a peripheral node fails it has no effect on the network.
If the central node fails the whole network is “down”.
Advantage = Easy to add new stations
Disadvantage = Central node may get congested with
network traffic
40. MESH TOPOLOGY
Each node is connected to more than one node.
This provide an alternate route mechanism.
Supports back-up and rerouting.
This type topology generally use in military area.
Advantage = A node failure has no effect on the rest
of the network.
Disadvantage = Expensive to set up with a lot of
cabling.
41. HYBRID TOPOLOGY
The hybrid topology can be a combination of two or more basic topologies, such as bus,
ring, star, mesh, or tree.
Hybrid networks combine more than two topologies, which, in turn, enable you to get
advantages of the constituent topologies.
42. Difference
Bus Topology Ring Topology Star Topology
Structure there is a single
central cable (backbone)
and all computers and
other devices connect to it
all computers and other
devices are
connected in a circle
there is a central host and
all nodes
connect to it
Host existence depends on network
needs
depends on network needs yes
Connection
between nodes
It has no connection
between the nodes.
yes no
Host failure network can still run network will fail network will fail
Node failure network can still run network will fail network can still run
Ease of
troubleshooting
difficult. Need to
search for the
problematic node one by
one
depends on backbone. If there is
a backbone, troubleshooting is
difficult. If there is no backbone,
the focus is on the two nodes
not communicating
depends on the host. It is
easier to repair the
problematic host. However, if
the nodes fail, then each
node has to be searched
Ease of adding
or removing nodes
easy difficult average
Number of nodes
when extending
network
many limited limited
43. NETWORK PROTOCOLS
A network protocol defines rules and conventions for communication
between network devices.
Protocols specify interactions between the communicating entities.
44. NETWORK PROTOCOLS
TCP (Transmission Control Protocol)
IP (Internet Protocol)
HTTP (Hyper Text Transfer Protocol)
FTP (File Transfer Protocol)
HTTPS (Hyper Text Transfer Protocol Secure)
Network Protocol has five types-
45. NETWORK PROTOCOLS
File transfer protocol (FTP) – used to transmit files.
Simple mail transfer protocol (SMTP) – used to transmit e-mail messages.
Post office protocol (POP) – allows the recipient to retrieve messages.
Wireless application protocol – enables wireless devices to access and use the
Internet using a client/server network.
802.11 – protocol for wireless LAN technology