How is the division relational algebra operator used?

Sorry do not know but if you need with math, i will

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.

Answerpage pane; i believe this is a correct answer/ plz check first/// good luck;