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1. Classification of Networks
2. Local Area Networks
3. Local Area Networks Are The Industry Standard
4. Wide Area Networks ampamp Standards
5. WIRELLES NETWORKS
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Local Area Networks

...
We will describe the various components and processes needed to implement a local area network (LAN) and wide area network (WAN) between our international offices and our main offices. ...
Local Area Networks (LANs)
A local area network can be described best as a computer network that spans a relatively small area. ... A file server is a computer that has access to a large hard-disk storage area. ... There are many suites of network communications protocols to choose from but the one used on both local area and wide area networks including the Internet, is TCP/IP, which is the protocol we will use for our network. ...
Network Data Packaging
“The local area network uses Ethernet for electrical signaling and packet construction, TCP for transmission control, and IP for addressing. ...
Network Cabling
     The majority of new networks are 100Base-T, which provides 100Mbps of bandwidth. ... If the destination address is not on the local LAN, the bridge hands the data off to the LAN at the other end of the communications link. ... NAT Networks typically use special non-routable IP addresses that are reserved for private networks. ... This storage area network is a shared storage for all central servers. ...
     Programs running on computers in workgroup LANs can access a local server for commonly used files, but they will reach out through the corporate network for centrally stored files and specialized services. ... Many files will reside on the local servers, but applications will access centralized services for files and security information. ...
Wide Area Network (WAN)
A natural extension of the LAN is the wide area network (WAN). ... Bridges, routers, and switches are tools that are used to connect Local Area Network to Wide Area Networks such as the Internet. ...
“A backbone network is the focal point where all the traffic carried in the access networks converges to be switched and routed to the proper destination. ...
Performance and Scalability
The backbone must have a much greater bandwidth than the access networks feeders. ...
The above requirements usually will lead to different backbone networks with different architectures. The critical network design parameters are:
Ø     The size of the network, in terms of number of users and their required bandwidth
Ø     The geographical dispersion: LAN/WAN
Ø     The communication media: data, voice, video, and multimedia
Ø     The dependence of the network in the user business ("on line" Trade exchange)
Nevertheless, different customized networks resort more or less to the same basic backbone technologies. ... This is in large part due to its wide adoption by telecommunications and service provider networks (Wolak, 1998)”. ... This means that ATM networks can be connected over a WAN link with little overhead or translation. In contrast, Gigabit Ethernet networks require considerable overhead to be linked over an ATM network. ...
Gigabit Ethernet integrates smoothly into existing Ethernet networks. ... htm
Backbone networks [Online serial], Available: http://www. ... (2002) How networks work 6th ed.


Approximate Word count = 3315
Approximate Pages = 13.3
(250 words per page double spaced)
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