100-140 Question 77
Single answerYou are troubleshooting a legacy printer that connects to a computer via a serial port. The user reports that the printer is not responding. After verifying that the printer is powered on and properly connected, what is the next step you should take to resolve the issue?
- A
Check the COM port configuration in the device manager for conflicts.
- B
Replace the serial cable with a USB cable.
- C
Install the latest printer drivers from the manufacturer's website.
- D
Restart the computer to reset the serial port.
Show answer and explanation
Correct answer: A
Explanation
When troubleshooting devices connected via serial ports, verifying the COM port configuration is critical. Serial devices depend on proper port assignment and settings, such as baud rate and parity, to communicate with the computer. Other steps, like installing drivers or restarting the system, should only be considered after ensuring the COM port settings are correct and conflict-free.
- A. Correct.
Checking the COM port configuration in the device manager is the correct step because serial connections rely on proper COM port settings. Conflicts or incorrect configuration could prevent the printer from functioning.
- B. Incorrect.
Replacing the serial cable with a USB cable is not a valid solution because the printer uses a serial connection, not USB. Additionally, this option would require additional hardware, such as a USB-to-serial adapter, which is not mentioned in the scenario.
- C. Incorrect.
Installing the latest printer drivers is not the immediate next step because the problem appears to be related to the serial connection, not the driver. Drivers can be installed later if needed.
- D. Incorrect.
Restarting the computer may help in some cases, but it is not the next logical troubleshooting step in this scenario. Checking the COM port configuration is more direct and specific to the issue.