Benefits of Networking&

Network administration

Outline the benefits the network there are actually only 2, namely "Sharing resources and as communication media". 1. As a media sharing network.

The main reason people share is due to limited resources (computers) and the Fund. For example in an office there are 10 computers and if every employee in need of a printer, no network, then the company need 10 printers, with the network, so companies only need a shared printers pake tenth employee. That means the company saves up to 90% the cost of procurement of the printer only.

2. Network as a medium of communicationAs a medium of communication, the network has become one of the main medium of communication for most of Man.

Benefits of Networking

1. LANLocal Area Network is a computer network whose network covers only a small area, such as campus computer networks, buildings, offices, in homes, schools or smaller.LAN has the following characteristics:1. Has a higher data rapidly2. Covers a narrower geographical area3. Does not require leased telecommunication lines from telecom operators

Network administration

2. WANWide Area Network is a computer network covering a large area as an example of a computer network between regions, cities or even countries, or can be defined as well as computer networks require routers and public communication channels.WANs are used to connect a local network with other local networks, so users or computers in one location can communicate with users and computers in other locations

Network administration

3. Peer to Peer NetworksPeer to Peer Networks is a computer network consisting of several computers (usually no more than 10 computers with printers 1-2). In the preferred system of this network is the use of programs, data and printers together.

Network administration

4. Client Server NetworksServer is a computer that provides facilities to other computers on the network and the client is the computer that receives or uses the facilities provided by the server. Server in client-server type of network called a special server to act as a pure server that provides the facility to the workstation and the server can not serve as workstation.

-excellence : Higher-speed access, Security systems and network administration better, Better data backup system

- Weakness : Operational costs are relatively more expensive, Required the presence of one particular computer which allows more to be assigned as a server, Viability depends on the server network. If the server crashes the whole network will be disrupted.

Network administration

Networking Protocols&

LAN Architectures 

A protocol is a set of rules or standards or allow a relationship, communication, and transfer data between two or more computer points. Protocol can be implemented in hardware, software or a combination of both. At the lowest level, the protocol defines a hardware connection.

Networking Protocols

Networking ProtocolsTCP/IP Protocol Suite

The network architecture consists of wiring, topology, packet format and access methods. Architecture commonly used in cable-based LAN network is electrically, through the development of optical technology is now also widely used fiber optic cable as an alternative medium

LAN Architectures 

1. Ethernet

Ethernet is a type of cabling and signal processing scenarios for data computer network developed by Robert Metcalfe and David Boggs at Xerox Palo Alto Research Center (PARC) in 1972.Ethernet is intended to form a computer network. Because of its simplicity and reliability, the Ethernet can survive until today, and even into the network architecture of the most widely used.

LAN Architectures 

LAN Architectures 2. DSL

DSL (Digital Subscriber Line) is a set of technologies that provide digital data through the cable conductor used in the close proximity of the local telephone network. Usually downolad speed of DSL ranges from 128 kbit / d to 24 000 kb / d depending on the DSL technology.

LAN Architectures 3. Cable Modems

Cable Modem is a hardware device that connects your PC with a cable TV connection. Cable TV networks can be used to connect to the internet with a maximum speed of 27Mbps downstream (download speed to the user) and 2.5 Mbps upstream (upload speed of the user). In order to use a cable modem, the computer must be equipped with an ethernet card (Ethernet card).