ESSENTIAL NETWORK DEVICES

Following are essential network devices which are use in different types of communications.

• HUB/Repeater
• Switch/Bridge
• Router//MLS

HUB:
                Following are the features of HUB device.

• Layer 1 device
• Physical layer device.
• Non intelligent device.
• Hardware based.
• Use in LAN connectivity.
• HUB is a Broadcast device.
• Disadvantage of HUB are

1. Security break.
2. Extra processing.

Repeater:
                           Repeater is a physical layer device which extent your local area.It extent the digital signal to 75 meters.It is hardware base and layer 1 device.It is use to extent the LAN.