Computer cannot be intelligent they can only do what they programmers tell them

The later statement is true that computers can only do with the programmers tell them to, though I disagree computers cannot be intelligent. After all, a programmer can code the computer to act certainly in different ways so it acts rationally based on what it senses in environment/habitat and choose best possible outcomes, while not being hard coded to act as such for weird or very particular instances.

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.

It is called "choke.