provide one-to-many and many-to-one communication mechanisms, useful for broadcasting messages to any number of processes.

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Every mode signifies one version of a release

Once the twisted pair cable is connected and a network is established the led lights at the back of the computer should be steady. on most ethernet adapters nowadays, a steady green light means that the connection is actively connected to a valid partner at the opposite end. if the status of the led starts flashing, this means that there’s some activity and data is being transferred.