The correct answer is: A. In the modem.
A leased line is a dedicated, private line that connects two or more locations. It is a more reliable and secure connection than a traditional dial-up connection.
A modem is a device that converts digital signals from a computer into analog signals that can be transmitted over a phone line. The carrier detect light on a modem indicates that the modem is connected to the phone line and is receiving a signal.
If the carrier detect light is not on, it means that there is a problem with the modem or the phone line. The most likely cause is a problem with the modem.
To troubleshoot the problem, you can try the following:
- Check the modem’s power supply and make sure that it is plugged in and turned on.
- Check the phone line and make sure that it is plugged in and not damaged.
- Try connecting the modem to a different phone line.
- If you are still having problems, contact your internet service provider.
Here is a brief explanation of each option:
- Option A: In the modem. This is the most likely cause of the problem. If the modem is not receiving a signal from the phone line, the carrier detect light will not be on.
- Option B: In the phone line. If the phone line is damaged or not connected properly, the modem will not be able to receive a signal.
- Option C: In the computer. If the computer’s modem port is not working properly, the modem will not be able to connect to the computer.
- Option D: In the DTC equipment. DTC equipment is used to test and troubleshoot leased lines. If there is a problem with the DTC equipment, it may not be able to detect a signal from the modem.
- Option E: None of the above. This option is not likely to be the cause of the problem.