100-140 Question 86
Select 4A user is troubleshooting an issue with their external 4K monitor not being detected when connected via a Thunderbolt 3 (USB-C) port on their laptop. Which of the following steps should the user take to resolve the issue?
- A
Ensure that the USB-C cable being used is Thunderbolt 3 certified.
- B
Verify that the laptop supports video output through its Thunderbolt 3 port.
- C
Update the laptop's USB drivers to resolve any potential compatibility issues.
- D
Use a USB-C to HDMI adapter to bypass the Thunderbolt 3 connection.
- E
Check if the external monitor's firmware is up to date.
Show answer and explanation
Correct answers: A, B, C, E
Explanation
Troubleshooting a Thunderbolt 3 connection requires verifying both hardware and software compatibility. Ensuring the cable is Thunderbolt 3 certified, confirming the laptop's port capabilities, updating drivers, and checking the monitor's firmware are all valid steps. Using a USB-C to HDMI adapter may work in certain scenarios but is not a direct fix for Thunderbolt-specific issues.
- A. Correct.
Thunderbolt 3 cables are not all the same, some are only designed for data transfer or power delivery. A certified Thunderbolt 3 cable ensures compatibility with high-bandwidth video output.
- B. Correct.
Not all Thunderbolt 3 ports support video output, as some may be limited to data transfer and power delivery. Verifying laptop specifications is essential.
- C. Correct.
Outdated USB or Thunderbolt drivers can cause compatibility issues, so updating them is a good troubleshooting step.
- D. Incorrect.
While a USB-C to HDMI adapter might work in some cases, it is not a guaranteed fix for Thunderbolt 3 issues specifically, and it bypasses the Thunderbolt 3 functionality.
- E. Correct.
Some external monitors require firmware updates to ensure compatibility with the latest video standards or devices.