Wajeeha SagheerBS(IT)1st Semester

Assigned Topic: Types of NETWORKS

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What is Network Collection of computers and devices connected via communications devices and transmission is called network.

media

Types of Network LAN MAN WAN PAN VPN HAN Peer-to-peer Client to server

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 and has its network equipment and interconnects locally managed.

Examples:

Ethernet and Wi-Fi Networking in home, office. Networking between two computers. Wi-Fi (When we consider wireless LAN)

Advantages 1. Resource Sharing

2. Software Applications Sharing

3. Easy and Cheap Communication

4. Data Security

5.  Internet Sharing

Disadvantages1. Privacy Violations

2.Data Security Threat

3. Covers Limited Area

4. LAN Maintenance Job

5. High Setup Cost

MAN: A Metropolitan area network (MAN) is a network that interconnects users with computer resources in a geographic area or region larger than that covered by even a large local area network (LAN) but smaller than the area covered by a wide area network (WAN).

Examples:

Metropolitan area networks of various sizes can be found in the metropolitan areas of London, England; Lodz, Poland; and Geneva, Switzerland. Large universities also sometimes use the term to describe their networks.

Advantages 1.It provides good back bone or large network and provide grater access than wans.

2. The man usually encompasses several blokes of city or an entire city.

Disadvantages

1.  More cables required for man connection from one place to another .

2. It is difficult to make the system secure form hackers and industrial espionages

WAN: A wide area network (WAN) is a geographically distributed private telecommunications network that interconnects multiple local area networks (LANs). In an enterprise, a WAN may consist of connections to a company's headquarters, branch offices, colocation facilities, cloud services and other facilities.

Types Of WAN connections:

WAN technologies, based on the 4G LTE standard, are gaining traction

Public Wi Fi or satellite networks.

WAN infrastructure may be privately owned or leased as a service from a third-party service provider, such as a telecommunication carrier, internet service provider, private IP network operator or cable company.

Example Internet is the example of WAN.

Advantages 1. Covers a large geographical area so long businesses can connect on the one network .

2. Everyone on the network can use the same data .This avoid the problem where same user may have older information.

3.Massage sent and receive (audio,vedio,images, text) best e.g. Skype, Whatsapp.

Disadvantages

1. Need a good firewall to restricted for outsiders from entering disturbing the network .

2. Security is real issue most of people hacker and made viruses to their PCs and stole the important files.

PAN: A personal area network (PAN) is the interconnection of information technology devices within the range of an individual person, typically within a range of 10 meters. the network used to connect different devices like we connect our pc, mobile and PDA to one another. This type of network has not wide range but it makes over life much easier. If the devices within the range of network then we can share files and data between them.

Example: The good example of personal area network is Bluetooth.

Advantages

1. Every information which are stored in the devices which are shared via network with authorized peoples only. So there is secure file transfer between device

2. This is the basic concept for wearable computing.It gives royal look and which makes work simple.

3.It is use in portable devices such as PDAs.

Disadvantages

Disadvantages1. in this lot mostly devices are used for communication. wireless uses microwave signals  as medium for make communication path.

2 Long time working with this radius signals will leads some brain related problems, and heart related problems

3. This network uses devices which are may expensive such as smartphones,laptops,Digi camera, PDA... etc.

VPN: A virtual private network (VPN) is a technology that creates an encrypted connection over a less secure network. The benefit of using a secure VPN is it ensures the appropriate level of security to the connected systems when the underlying network infrastructure alone cannot provide it. The justification for using VPN access instead of a private network usually boils down to cost and feasibility: It is either not feasible to have a private network

Examples: The instructions are send from head office to the regional offices through internet

 

Examples: ( Image, HTML, PDF file, MS PowerPoint Presentation, Adobe Flash or MS Visio XML 

Peer to Peer : Simple network that connects fewer than 10 computers each computer, or peer, has equal capabilities.

Examples: If User A's PC is connected to a printer that User B wants to access, User A must set his machine to allow (share) access to the printer. Similarly, if User B wants to have access to a folder or file, or even a complete hard drive, on User A's PC, User A must enable file sharing on his PC. Access to folders and printers on an office P2P network can be further controlled by assigning passwords to those resources.

Advantages 1. Cheaper cabling cost.

2 .Normally used in small networks with less than10 computers.

3.No server need.

Disadvantages

1. All computer have equal ability.

2. Hard to manage.

3.Install to every computer.

 

Client to server: One or more computers act as server and other computers, or clients, access server is called client to server network.

Example: In lab there are one server computer and many client computers. In companies. In education departments.

Advantages 1.Server has control ability while client’s don’t.2. It is used in small and large area networks.3. Easy to manage.4.Install software only in the server computer while client’s share the software.

Disadvantages

1.Higher cabling cost

2.One powerful computer acting as server.

 

Reference: www.definition.com www.conceptdraw.com

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