INTRODUCTION AND BASIC INFORMATION OF NETWORK DEVICES

Types of Network Devices :-

1. Hub

2. Switch

3. Router

4. Bridge

5. Gateway

6. Repeater

7. Access Point

HUB :-

• Hub is the device that connect multiple device in a network, allowing them to communicate.
• hub work by receiving data from one device and broadcasting it all connected device.

SWITCH :-

• Switch is network device work on layer 2 of OSI model
• It is integrated device have a memory , The name of memory is ASIC chip (Application Specific Integrated Chip)
• It is broadcast only one time , next time one to one communication
• First broadcast then Unicast and Multicast
• Switch has one broadcast domain
• Every port of switch is Separate collision domain
• Switch has 8/6/4/48 port
• Work on full duplex mode
• It is work on MAC address and understanding frame
• It is a LAN device

ROUTER :-

• Router is a network device work on layer 3 of OSI model
• Also known as internet working because it is used to interconnect multiple different networks
• It is does not support broadcasting , means to say router is used to break broadcast domain
• multiple collision domain
• Every port has own broadcast domain
• It is work on IP address
• It is WAN device
• Router has 2/4/8 port

Types of Router memory

1. ROM - Read Only Memory
2. FLASH - Flash Memory
3. NVRAM - Non Volatile Random Access Memory
4. VRAM - Volatile Random Access Memory

Types of Network

• PAN - Personal Area Network
• LAN - Local Area Network
• MAN - Metropoliton Area Network
• CAM - Campus Area Network
• WAN - Wild Area Network