Local Area Network And Wide Area Network Pdf
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In its simplest form, a wide-area network WAN is a collection of local-area networks LANs or other networks that communicate with one another.
- What Is a WAN? Wide-Area Network
- Introduction to WANs (Wide Area Network)
- Computer Network Fundamentals
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.
Local Area Network LAN is a computer network, which is limited to a small office, single building, multiple buildings inside a campus etc. It is nearly impossible for a small to medium organization except Network Service Providers to pull network cables between their two offices in two different countries located s of kilometers away. The aerial distance between Chennai and Manila is about 4, kilometers. It is almost impossible for a small to medium business to draw cables between Chennai and Manila. We normally avail the services of an Internet Service Provider for connectivity between these two offices.
What Is a WAN? Wide-Area Network
A wide area network WAN is a telecommunications network that extends over a large geographic area for the primary purpose of computer networking. Wide area networks are often established with leased telecommunication circuits. Businesses, as well as schools and government entities, use wide area networks to relay data to staff, students, clients, buyers and suppliers from various locations across the world. In essence, this mode of telecommunication allows a business to effectively carry out its daily function regardless of location. The Internet may be considered a WAN.
Introduction to WANs (Wide Area Network)
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. Ethernet and Wi-Fi are the two most common technologies in use for local area networks. The increasing demand and usage of computers in universities and research labs in the late s generated the need to provide high-speed interconnections between computer systems. A report from the Lawrence Radiation Laboratory detailing the growth of their "Octopus" network gave a good indication of the situation. A number of experimental and early commercial LAN technologies were developed in the s.
One way to categorize networks is to divide them into local-area networks (LAN) and wide-area networks (WAN). LANs typically are connected workstations.
Computer Network Fundamentals
If you understand the fundamental objectives of your organization and how your telecommunication network assists you to achieve these objectives you will have a sound basis for the development of network security. The types of potential interruption must also be understood remembering that small, intermittent failures can be worse than complete collapse. Risk exposures can be prioritized and contingency plans established. Duplicated carrier communications, private network triangulation, and virtual private networks are considered as well as ISDN and switched backup services.
Wide Area Network WAN is a collection of various local area networks LAN to transmit the data to the large geographical area in the form of voice, video, image, files. A LAN is a small area network that connects the network only for a limited distance. Ethernet and wifi fall under the local area network. Merely, the network of all local area networks is called a Wide area network WAN.
A network consists of two or more computers that are linked in order to share resources such as printers and CDs , exchange files, or allow electronic communications.
Wide Area Networks (WAN)
You need Adobe Reader 7. If Adobe Reader is not installed on your computer, click the button below and go to the download site. This article introduces a partial-bandwidth-guaranteed service system and a service-area expansion system that we have developed in order to improve the performance of wide-area Ethernet networks. The developed systems will enable new added services and provide a scheme for cost-efficient network expansion. Keywords: wide-area Ethernet service, partial-bandwidth-guaranteed service system, service-area expansion system.
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