You are working as a senior network technician at Certkiller .com. A trainee asks you when the
activity light on an Ethernet interface typically lights. What would your answer be?
A.
power is applied to the network interface card (NIC).
B.
communication is occurring.
C.
the DHCP address has been assigned.
D.
a cable connects the NIC to another Ethernet interface.
Explanation:
The Ethernet NIC (Network Interface Card) has two lights. One for link and one for activity. The
link light is on when the NIC is connected to the network and the activity light is on when there is
some sort of communication (transmit/receive) over the NIC.