Classification of Computer Networks
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Transcript of Classification of Computer Networks
What are the Advantages of Using a Network?
Advantages of using a network include: • facilitating communications• sharing hardware• sharing data and information• sharing software• transferring funds.
Classification of network
Classification of network
How Are LAN, MAN, and WAN Different?
The main differentiation among these classifications is their area of coverage.
LAN, MAN and WAN compared
Classification of network
Classification of network
LOCAL AREA NETWORK
Example of a LAN
Local Area Network (LAN): Definition
A local area network (LAN) is a network that connects computers and devices in a limited geographical area.
Example such as a home, school computer laboratory, office building or closely positioned group of buildings.
Classification of network
Local Area Network (LAN) The simplest form of LAN is to connect two computers together.
COMPUTER2
COMPUTER1
Classification of network
Switch /hub
Local Area Network (LAN) A network which consists of less than 500 interconnected devices
across several buildings, is still recognized as a LAN.
Classification of network
Local Area Network (LAN)Classification of network
Personal Area Network (PAN) A personal area network (PAN) is a computer network used for
communication among computer and different information technological devices close to one person.
Headphone
PDA
PrinterMouse
Laptop
Smartphone
Classification of network
Personal Area Network (PAN) Examples of devices that are used in a PAN are:
Personal computers Printers Fax machines Telephones PDAs Scanners Video game consoles.
Classification of network
A wired PAN is usually constructed with USB and Fire wire connections.
Classification of network
Personal Area Network (PAN) Technologies such as Bluetooth and infrared communication
typically form a wireless PAN.
Classification of network
House Area Network (HAN) A home area network (HAN) is a residential LAN which is used for
communication between digital devices typically deployed in the home, usually a small number of personal computers and accessories, such as printers and mobile computing devices.
Classification of network
Classification of networkHouse Area Network (HAN)
House Area Network (HAN) An important function is the sharing of Internet access, often a
broadband service through a Digital Subscriber Line (DSL) provider.
Classification of network
Local Area Network (LAN) :Advantages • Easy to share devices
(printers, scanners, external drives)
• Easy to share data (homework, pictures)
• Cost of LAN Setup is low.
Classification of network
Local Area Network (LAN) :Disadvantages • Power - a good LAN is required to
be on all the times. • Security - each computer and
device become another point of entry for undesirables.
• if all computers running at once, can reduce speed for each.
• Area covered is limited
Classification of network
METROPOLITAN AREA NETWORK
Example of a MAN
Metropolitan Area Network (MAN): Definition
A metropolitan area network (MAN) is a high-speed network that connects local area networks in a metropolitan area
Example such as a city or town and handles the bulk of communications activity across that region.
Classification of network
Metropolitan Area Network (MAN)Classification of network
Campus Area Network (CAN) A campus network is a computer network made up of an
interconnection of local area networks (LAN's) within a limited geographical area.
Classification of network
Campus Area Network (CAN) In the case of a university campus-based campus network, the
network is likely to link a variety of campus buildings including; academic departments, the university library and student residence halls.
Classification of network
Academic Departments
University Library Student
Residence Halls.
Classification of networkCampus Area Network (CAN)
Metropolitan Area Network (MAN):Advantages• Efficiency and shared access.• All the computer-owning residents of the area have equal ability to go on line.
Classification of network
Metropolitan Area Network (MAN):Disadvantages• It can be costly (hardware, software, support, etc.)• Security problems • As the network consists of many computers over the span of a city, the connection can lag or become quite slow.
Classification of network
WIDE AREA NETWORK
Wide Area Network (WAN):Definition
A wide area network (WAN) is a network that covers a large geographic area (such as a city, country, or the world) using a communications channel that combines many types of media such as telephone lines, cables, and radio waves.
Classification of network
Example of a WAN
Wide Area Network (WAN)
The Internet is the world’s largest WAN.
Classification of network
Wide Area Network (WAN)Classification of network
Enterprise Private Network (EPN) An enterprise private network is a network build by an enterprise
to interconnect various company sites, e.g., production sites, head offices, remote offices, shops, in order to share computer resources.
Production site Head offices Frequency
Band
Classification of network
Production site Head offices
Frequency Band
Classification of network
Enterprise Private Network (EPN)
Virtual Private Network (VPN) A virtual private network (VPN) is a computer network in which
some of the links between nodes are carried by open connections or virtual circuits in some larger network (e.g., the Internet) instead of by physical wires.
Classification of network
VPNserver
Classification of networkVirtual Private Network (VPN)
Wide Area Network (WAN):Advantages
• Increased efficiency• Ease of communication• Lowered costs.
Classification of network
Wide Area Network (WAN):Disadvantages• Security problems • Training costs• Maintenance problems. Large
enterprises will dedicate personnel to maintaining their WAN.
Classification of network
Cost Network Size Speed
Number of
computer
Low Small Fastest Smallest
High Larger Slower Large
Higher Largest Slowest Largest
Comparison: LAN, MAN and WANClassification of network
LAN
MAN
WAN
SummaryClassification of network
Lesson Checkup
What is a network? What are three advantages of using a network? Give two types of LAN configuration. Give two types of WAN configuration. List down two of WAN disadvantages. Give two types of network communication standard in wired category. Give three types of network communication standard in wireless category.