You are working as a technician at AIOTestKing.com. You are asked to install some software on a workstation and decide to do this over a remote assistant session, however you are unable to connect to the computer. As a part of the troubleshooting you do several unsuccessful attempts to PING the computer. Which of the following may be the cause of the unresponsive computer?

A.
network interface card (NIC) TX/RX lights are flashing

B.
Show Icon in Notification Area is unchecked in LAN properties

C.
computer firewall

D.
inadequate page file