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Network Fundamentals

A network is simply a group of two or more Personal Computers linked together. Many types of networks exist, but the most common types of networks are Local-Area Networks (LANs), and Wide-Area Networks (WANs).

In a LAN, computers are connected together within a "local" area (for example, an office or home). In a WAN, computers are further apart and are connected via telephone/communication lines, radio waves or other means of connection.

How are Networks Categorized?

Networks are usually classified using three properties: Topology, Protocols and Architecture. 

Topology specifies the geometric arrangement of the network. Common topologies are a bus, ring and star.You can check out a figure showing the three common types of network topologies here.

Protocol specifies a common set of rules and signals the computers on the network use to communicate. Most networks use Ethernet, but some networks may use IBM's Token Ring protocol. We recommend Ethernet for both home and office networking. For more information, please select the Ethernet link on the left.

Architecture refers to one of the two major types of network architecture: Peer-to-peer or client/server. In a Peer-to-Peer networking configuration, there is no server, and computers simply connect with each other in a workgroup to share files, printers and Internet access.

This is most commonly found in home configurations and is only practical for workgroups of a dozen or less computers. In a client/server network there is usually an NT Domain Controller, to which all of the computers log on. This server can provide various services, including centrally routed Internet Access, mail (including e-mail), file sharing and printer access, as well as ensuring security across the network. This is most commonly found in corporate configurations, where network security is essential.

Display #
Title Hits
Introduction To Networking 46076
LAN Network Topologies 165733
Network Data Transmission 36146
Media Access Control - MAC Addresses 52196
Unicast 27939
Multicast - Understand How IP Multicast Works 209873
Multicast IP Address List 37290
Network Broadcast 62283
Controlling Broadcasts and Multicasts 26374
Hubs & Repeaters 44512
Switches & Bridges 52743
Power over Ethernet - Understanding PoE Technology, PoE Options & Power Requirements 33840
Need for Speed – The Data Tsunami & Advancements in Networking. From FastEthernet 100Mbps to Wireless 17.6Tbps! 15652
Introduction to Content Switching - Application & Virtual Server Load Balancing via Deep Packet Inspection 32475
Measuring Network Performance: Test Network Throughput, Delay-Latency, Jitter, Transfer Speeds, Packet loss & Reliability. Packet Generation Using Iperf / Jperf 96800
The Importance of a Network Analyzer – Packet Sniffer. Must-Have Features for Demanding Engineers & Administrators 18407

Tags: networks fundamentals architecture network categories power over ethernet PoE IP Addressing multicast Switches hubs broadcast

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