The Devices used to Connect Networks of Computers

Following devices are used to connect networks of computers:
  1. Router
  2. Gateway
  3. Bridge
1- Router
    Router is an electronic device. It used to connect two or more different or similar networks. It stores the addressing or routing information of each computer on the connected networks.

When a router receives a packet of data, it looks the address where the packet of data is to be sent. Router uses the routing information to transfer data along the most efficient path.

2- Gateway
    A gateway is an electronic device. It used to connect two or more different types of networks. It translates data from one format to the other.

Different networks may have different types of data and of different formats. Gateway receives data packet from one type of network. It reads the address of computer on the networks where data packet is to be sent. It converts the data packet into a format that the destination computer can understand.

3- Bridge
    A bridge is an electronic device. It is used to connect two similar network segments. It also controls the data flow between them. When a bridge receives a message, it reads address of both the the sender and receiver. If the sender and the receiver are the same network segment, the bridge does not pass the message to the other network segment. The message is directly sent to receiver. The bridge, therefore, reduces the network traffic. So the performance of network is increased.

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