100-140 Question 71
Single answerA user contacts the IT support team stating that their new monitor is not displaying any output when connected to their desktop computer. The monitor supports HDMI and DisplayPort, while the desktop computer has HDMI, VGA, and DVI output ports. The user has connected the monitor to the desktop using a VGA cable. What is the most likely reason for the issue?
- A
The VGA cable does not support digital signals, which the monitor requires.
- B
The desktop computer's VGA port is likely damaged.
- C
The monitor's resolution settings are incompatible with the desktop display output.
- D
The HDMI port on the desktop computer is disabled in the BIOS.
Show answer and explanation
Correct answer: A
Explanation
The issue arises because the monitor only supports digital input through HDMI and DisplayPort, while the user attempted to connect it using a VGA cable, which transmits analog signals. Modern monitors built for HDMI and DisplayPort generally do not support analog input, making the VGA connection incompatible.
- A. Correct.
The VGA cable transmits only analog signals, whereas modern monitors that support HDMI and DisplayPort typically require digital signals. This is likely the reason the monitor is not displaying anything.
- B. Incorrect.
While a damaged VGA port is a possibility, it is not the most likely explanation given that the monitor itself does not support VGA input.
- C. Incorrect.
Resolution mismatches can cause display issues, but this typically results in an error or incorrect display rather than no output at all.
- D. Incorrect.
The HDMI port being disabled in the BIOS is irrelevant in this scenario since the user is using a VGA cable, not HDMI.