. 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 but smaller than the area covered by a. The term is applied to the interconnection of networks in a city into a single larger network (which may then also offer efficient connection to a wide area network). It is also used to mean the interconnection of several local area networks by bridging them with lines. The latter usage is also sometimes referred to as a campus network.
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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). The term is applied to the interconnection of networks in a city into a single larger network (which may then also offer efficient connection to a wide area network).
It is also used to mean the interconnection of several local area networks by bridging them with backbone lines. The latter usage is also sometimes referred to as a campus network. You can communicate over. Easy to configure Easy to use Easy to set-up Can be maintained by one person Cheap to run. Can be expensive to set-up Attractive targets for hackers. Allows networking over large distances The bigger the WAN the more fault tolerant it becomes.
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Very expensive to set-up and maintain Will need a full time team of network engineers or people with equivilent knowledge Usually always a node down somewhere that has to be fixed. It's convienent. It's not secure as wired Its not as reliable as wired Its not as far reaching as wired It's not as fast as wired It's more expensive than wired Its not as easy to set-up as wired. NADVANTAGES n nProvide very efficient 'High-speed' retrieval nSimplicity nThe network model is conceptually simple and easy to design. NAbility to handle more relationship types nThe network model can handle the one-to-many and many-to-many relationships.
NEase of data access nIn the network database terminology, a relationship is a set. Each set comprises of two types of records.- an owner record and a member record, In a network model an application can access an owner record and all the member records within a set. NData Integrity nIn a network model, no member can exist without an owner. A user must therefore first define the owner record and then the member record.
Advantages And Disadvantages Of Metropolitan Area Network Pdf
This ensures the integrity. NData Independence nThe network model draws a clear line of demarcation between programs and the complex physical storage details.
The application programs work independently of the data. Any changes made in the data characteristics do not affect the application program. N n nDISADVANTAGES n nSystem complexity nIn a network model, data are accessed one record at a time. Adin vibration speaker user manual. This males it essential for the database designers, administrators, and programmers to be familiar with the internal data structures to gain access to the data.
Therefore, a user friendly database management system cannot be created using the network model nLack of Structural independence. NMaking structural modifications to the database is very difficult in the network database model as the data access method is navigational. Any changes made to the database structure require the application programs to be modified before they can access data. Though the network model achieves data independence, it still fails to achieve structural independence.
Internet was never possible without the invention of intelligent switches, satellites, fibre optic cables and LAN cards. Those who find it difficult to get idea of wide area network, internet is one live example of it. Before we look into Wide Area Network (WAN), we must have an understanding of what is Local Area Network (LAN). Disturbed full discography torrent. Local Area Network, as the name suggests, is a network built in a limited area by using LAN cables, switches and LAN cards. One example is a network of a university or a business office at one location. The computers on a Local Area Network are connected to a network switch. You can either make this network a workgroup (share limited resources) or domain (share all kind of resources and services).
On domain, you have the privilege to grant permissions to users to share resources or limit them to use certain services. As LAN can only work within a certain distance, we need WAN to connect institutions and offices at different locations. WAN connects two or more LANs, and this is possible with the use of devices like routers.
There are many ways to build a Wide area network. You can either lay down your own cables between two or more locations or you can use leased lines. Most companies use leased lines as very limited companies can bear the cost of thousands pounds for it. The businesses and institutions get leased lines from different service providers and pay them on monthly basis. Today, many companies are establishing Virtual Private Network (VAN) by using leased lines. A VAN can be established by buying Live IPs from the service provider, at two or more different locations. To secure this network, the Network Administrator uses routers and firewalls to secure the network.
On WAN, the users at different locations are connected to a central server. The name of this computer is server because it is there to serve all the computers on the network. All the computers on the network are connected to central database on the server. These computers save data at real time, send queries to server and fetch reports at the same time.
What Are The Advantages And Disadvantages Of
The banking system is a very good example of a WAN network. The benefits of a Wide area network are unlimited. You sit in one country, and the office in the other country is just like a room next door. You can share documents, reports, prints, query databases, search through thousands of records in just quick seconds, monitor distant location offices by using digital cameras and do much more. The advantages of a Wide area network are infinite; it is up to you what benefits you want to get using this technology; the sophistication obviously increases with the cost factor. With many advantages of Wide area network, there are also some disadvantages associated, which though can be addressed by using latest technologies.
On WAN, the security is a big factor. When you connect on the internet using Live IPs, anyone can intrude in and hack your system. For this purpose, firewalls and routers securities are implemented, which definitely come with on the expense of thousands pounds. The latency period on WAN is high, but it can also be addressed by taking high speed internet connections. To establish a Wide Area Network, the businesses and institutions need a lot of money, as technologies that make your network secure as well as serve your needs are very costly. A digital marketing article by Dougles Chan, Singapore Digital Marketing Guru that specialized in & services, clients includes Asiapac, PC Dreams, Digital Hospital, Laptop Factory Outlet, Dr Geeks and others.
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