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Computer Networking
TCP/IP Application Layer
Arguably, the most popular TCP/IP application today is the web browser. Many major software vendors either have already changed or are changing their software to support access from a web browser. And thankfully, using a web browser is easy—you start a web browser on your computer and select a web site by typing in the [...]
TCP/IP Protocol Architecture
TCP/IP defines a large collection of protocols that allow computers to communicate. TCP/IP defines the details of each of these protocols inside document called Requests For Comments (RFCs). By implementing the required protocols defined in TCP/IP RFCs, a computer can be relatively confident that it can communicate with other computers that also implement TCP/IP.
An easy [...]
Perspectives on Networking
So, you are new to networking. You might have seen or heard about different topics relating to networking, but you are only just now getting serious about learning the details. Like many people, your perspective about networks might be that of a user of the network, as opposed to the network engineer who builds networks. [...]
Computer Network Overview
Computer networking or data communication is a most important part of the information technology. Today every business in the world needs a computer network for smooth operations, flexibly, instant communication and data access. Just imagine if there is no network communication in the university campuses, hospitals, multinational organizations and educational institutes then how difficult are [...]
Computer Network Management
Today it is almost inconceivable for a business not to have computers, whether it is a construction company or a high technology firm. When a business has more than one computer, they are almost always connected together in a local area network. These networks may be more or less advanced and therefore more or [...]
Computer Networking Fundamentals
The sharing of fax machines, printers, and modems amongst many computers and users reduce the operational cost. A database on a computer network is a very important application as it stores and runs many important data and jobs. Emails and chats can be used for instantaneous communication and sending of files on a computer network.
The [...]
Network Router
A router is a device that determines the proper path for data to travel between different networks, and forwards data packets to the next device along this path. They connect networks together; a LAN to a WAN for example, to access the Internet. Some units, are available in both wired and wireless models.
Wired Router Model
Wireless [...]
Network Switch
A network switch is a computer networking device that connects network segments.
Low-end network switches appear nearly identical to network hubs, but a switch contains more “intelligence” (and a slightly higher price tag) than a network hub. Network switches are capable of inspecting data packets as they are received, determining the source and destination device of [...]
Wide Area Network (WAN)
Wide Area Network (WAN) is a computer network that covers a broad area (i.e., any network whose communications links cross metropolitan, regional, or national boundaries). Or, less formally, a network that uses routers and public communications links . Contrast with personal area networks (PANs), local area networks (LANs), campus area networks (CANs), or metropolitan area [...]
Metropolitan Area Network (MAN)
Metropolitan area networks, or MANs, are large computer networks usually spanning a city. They typically use wireless infrastructure or Optical fiber connections to link their sites.
The IEEE 802-2001 standard describes a MAN as being:
“
A MAN is optimized for a larger geographical area than is a LAN, ranging from several blocks of buildings to entire cities. [...]
