Components Of Computer Network In Hindi | NIC, Hub, Bridge, Switch, Router, Modem, Repeater, Gateway
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- čas přidán 28. 08. 2023
- In this video you will learn important components of Computer Network In Hindi:-
MAC (Media Access Control Address) is known as a physical address is a unique identifier of each
host and is associated with the NIC.
There are two types of NIC:- 1. Wired NIC 2. Wireless NIC
2. Hub:- A hub is a hardware device in networking that is used to connect multiple computers. Hub is networking device that works on the first layer of OSI model i.e. physical layer. A hub has many ports in it. They are generally used to connect computers in a Local Area Network.
There are mainly three types of hubs:
Passive, Active, and Intelligent.
3. Bridge:-A bridge is a networking device or Components of computer network that connects two or more network segments together. A bridge operates at the Data Link layer of the OSI model. It is also known as Layer-2 Switch. The bridge has one input port and one output port. Bridge checks the destination address before sending the data, if the bridge finds the destination address then it sends the data otherwise it does not transmit the data.
There are three types of Bridges:-
1. Local Bridge
2. Remote Bridge
3. Wireless Bridge
4. Switch :- A switch is a hardware device and It mainly resembles a Bridge. A Switch contains more advanced features than Bridge. Switch is a device that connects multiple devices on a computer network. A switch is a data link layer device. It operates at layer 2 or a data link layer of the OSI model.
5. Router:-A router is a hardware networking device of computer network that operates at the Network layer of the OSI model. It is used to receive, analyze and forward the incoming packets to another network. Router determines the best path from the available paths for the transmission of the packet. It is used to connect a LAN with an internet connection. Router uses Routing Protocol to transfer data in the network.
Types of Router:- • Wireless (Wi-Fi) router
• B-router
• Core router
• Edge router
• Virtual router
6. Modem:- Modem stands for Modulator-Demodulator. A modem is a networking device of computer network that is used to convert digital signal to analog signal and analog signal to digital signal. A modem converts digital signals from a computer or network into analog signals that can be transmitted over the telephone or cable line. When the analog signals reach the other end of the line, the modem on the other end converts the analog signals back into digital signals that can be understood by the receiving computer or network.
Types of Modem:-
1. Internal Modem:- As the name suggests internal modem
is an internal part inside a computer.
2. External Modem :-The external modem is an external
part of the computer. It can be used when a computer is
unable to fit an internal modem inside of it.
7. Repeater:- A repeater is a network device that is used to boost up weak signals. Its function is to regenerate weak signals. If a signal travels for some distance, its intensity starts to drop. Here, a repeater can regenerate the same signal by copying it bit by bit.
8. Gateway:- Gateway is located at the boundary of a network and it is one of the important network device.
A gateway is used in telecommunications that connects two networks with different transmission
protocols together. Gateways serve as an entry and exit point for a network as all data must pass
through or communicate with the gateway prior to being routed.
#Netwrokcomponents #componentsofcomputernetwork
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Good
the statement in repeater that "repeater does not amplify signal it just copies and regenerate it" is generally false.
Repeaters do amplify signals. When a signal weakens over long distances or due to interference, a repeater amplifies the signal before retransmitting it onto another network segment. This amplification is necessary to maintain the signal strength and quality as it travels across the network. In addition to amplifying the signal, repeaters also regenerate it, meaning they clean up and reshape the signal to ensure that it meets the required standards before transmission. So, while it's correct that repeaters regenerate signals, they also amplify them.
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