18-08-2011, 12:52 PM
[attachment=15361]
INTRODUCTION-
What is networking?
A network is a collection of computers and devices connected to each other. The network allows computers to communicate with each other and share resources and information.
In other words networking can be defined as inter-connection of two or more computers for sharing the resources(hardware and software)and provide security on them.
Networks are built with a combination of computer hardware and computer software.
Types of computer networks :-
LAN (LOCAL AREA NETWORK)
WAN (WIDE AREA NETWORK)
MAN (METROPOLITAN AREA NETWORK)
PAN (PERSONAL AREA NETWORK)
VPN (VIRTUAL PRIVATE NETWORK)
CAN (CAMPUS AREA NETWORK)
GAN(GLOBAL AREA NETWORK)
SAN (STORAGE AREA NETWORK)
BASIC HARDWARE COMPONENTS
All networks are made up of basic hardware building blocks to interconnect network nodes, such as Network Interface Cards (NICs), Bridges, Hubs, Switches, and Routers.
In addition, some method of connecting these building blocks is required, usually in the form of galvanic cable .
Less common are microwave links or optical cable (“optical fibre"). An Ethernet card may also be required.
Some of the basic components required for interconnecting the network nodes:
NETWORK INTERFACE CARD
REPEATERS
NETWORK HUB
NETWORK BRIDGE
NETWORK SWITCH
ROUTER
NETWORK INTERFACE CARD
A network card, network adapter or NIC (network interface card) is a piece of computer hardware designed to allow computers to communicate over a computer network.
It provides physical access to a networking medium and often provides a low-level addressing system through the use of MAC addresses.
REPEATER
A repeater is an electronic device that receives a signal and retransmits it at a higher power level, or to the other side of an obstruction, so that the signal can cover longer distances without degradation.
In most twisted pair Ethernet configurations, repeaters are required for cable runs longer than 100 meters.
NETWORK HUB
A hub contains multiple ports.
When a packet arrives at one port, it is copied unmodified to all ports of the hub for transmission.
The destination address in the frame is not changed to a broadcast address.
ROUTER
Routers are networking devices that forward data packets between networks using headers and forwarding tables to determine the best path to forward the packets.
Routers work at the network layer .
INTRODUCTION-
What is networking?
A network is a collection of computers and devices connected to each other. The network allows computers to communicate with each other and share resources and information.
In other words networking can be defined as inter-connection of two or more computers for sharing the resources(hardware and software)and provide security on them.
Networks are built with a combination of computer hardware and computer software.
Types of computer networks :-
LAN (LOCAL AREA NETWORK)
WAN (WIDE AREA NETWORK)
MAN (METROPOLITAN AREA NETWORK)
PAN (PERSONAL AREA NETWORK)
VPN (VIRTUAL PRIVATE NETWORK)
CAN (CAMPUS AREA NETWORK)
GAN(GLOBAL AREA NETWORK)
SAN (STORAGE AREA NETWORK)
BASIC HARDWARE COMPONENTS
All networks are made up of basic hardware building blocks to interconnect network nodes, such as Network Interface Cards (NICs), Bridges, Hubs, Switches, and Routers.
In addition, some method of connecting these building blocks is required, usually in the form of galvanic cable .
Less common are microwave links or optical cable (“optical fibre"). An Ethernet card may also be required.
Some of the basic components required for interconnecting the network nodes:
NETWORK INTERFACE CARD
REPEATERS
NETWORK HUB
NETWORK BRIDGE
NETWORK SWITCH
ROUTER
NETWORK INTERFACE CARD
A network card, network adapter or NIC (network interface card) is a piece of computer hardware designed to allow computers to communicate over a computer network.
It provides physical access to a networking medium and often provides a low-level addressing system through the use of MAC addresses.
REPEATER
A repeater is an electronic device that receives a signal and retransmits it at a higher power level, or to the other side of an obstruction, so that the signal can cover longer distances without degradation.
In most twisted pair Ethernet configurations, repeaters are required for cable runs longer than 100 meters.
NETWORK HUB
A hub contains multiple ports.
When a packet arrives at one port, it is copied unmodified to all ports of the hub for transmission.
The destination address in the frame is not changed to a broadcast address.
ROUTER
Routers are networking devices that forward data packets between networks using headers and forwarding tables to determine the best path to forward the packets.
Routers work at the network layer .