The basic architecture diagram of cpu shows an adder with one input as the current instruction address and the other with a fixed value of the number 4. what is the reason of this second input as 4?

It would be 10 inches

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.