Introduction to Networking

     NETWORKING BASICS

Network 

Network is an interconnection between two or more devices for data communication and resource. sharing.

NETWORK

Networking

The technique in which a network being established is known as networking.

Networking Devices

HUB

 

•  Hub is used to connect the devices in a network.
• It is a duffer device because it doesn't know any  IPaddress or MAC address.
• It only knows the source port .Data is broadcasted to all the ports except source port.
• As the hub works based on  bus topology so that only one user communicate at a time .
• Collisions are common in hubs.Due to this data loss as well as the LAN bandwidth will be occurred.

SWITCH

 

• Switch is a interconnecting device used to connect the components in a network
• It works based upon on MAC address
• Switch will broadcast when it was started for the first time and later it will unicast
• It works based upon the star topology so that multiple clients can be communicated at a time 
• No collisions will be occurred in the switch if only one device is connected to each switch port

Router

 

• Router is also used to connect two or more devices in a network.
• It works based upon the IP address.
• It performs the Routing.
• No broadcasting.
• No collision.

Bridge 

 

• Bridge connect two media segments that use the same protocol.
• Bridges examine the source address to determine the media segment of network devices.
• Bridges operate at the Data Link layer of the OSI model.
• Bridge is a software based device which is used to create and maintain MAC address
•  Each segment connected by a bridge can have the same network address.
•  Messages within a media segment are prevented from crossing over to another segment.