A user tries to connect to the Internet using a dial-up modem and receives a “No dial tone detected” message. Which of the following is the FIRST thing the technician should check to troubleshoot the issue?
A. Check if the cable is connected on the modems phone RJ-45 port.
B. Check if the cable is connected on the modems line RJ-11 port.
C. Check if the cable is connected on the modems line RJ-45 port.
D. Check if the cable is connected on the modems phone RJ-11 port.