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220-1201 Practice Question: A technician is setting up a conference room and…
A technician is setting up a conference room and needs to connect a laptop to a projector that only has a VGA input. The laptop has an HDMI output. Which adapter should the technician use?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
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HDMI to VGA adapter
HDMI to VGA adapters are common for connecting modern laptops to older projectors. VGA is an analog signal, so the adapter must be active to convert digital HDMI to analog VGA. This question tests knowledge of legacy connector compatibility.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
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HDMI to DVI adapter
Why it's wrong here
An HDMI to DVI adapter facilitates a digital-to-digital connection, converting the HDMI signal to DVI. While both HDMI and DVI are digital video interfaces, this adapter would not enable connection to a projector that only accepts an analog VGA input. It fails to perform the necessary digital-to-analog signal conversion required to display the laptop's output on the VGA projector.
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USB-C to VGA adapter
Why it's wrong here
A USB-C to VGA adapter is designed to connect devices with a USB-C port, often supporting DisplayPort Alternate Mode, to a VGA display. However, the question specifies the laptop has an HDMI output port, not a USB-C port. Therefore, this adapter cannot physically connect to the laptop, rendering it incompatible regardless of its ability to convert to VGA.
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HDMI to VGA adapter
Why this is correct
An HDMI to VGA adapter is the correct solution because it actively converts the digital video and audio signal from the laptop's HDMI output into an analog video signal compatible with the projector's VGA input. HDMI is a digital interface, while VGA is an analog interface, requiring an active converter to bridge this fundamental difference. This adapter performs the necessary signal transformation, enabling the display of the laptop's content on the older VGA projector.
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DisplayPort to VGA adapter
Why it's wrong here
A DisplayPort to VGA adapter is used to convert a digital DisplayPort signal from a source device to an analog VGA signal for a display. While it performs the correct digital-to-analog conversion for VGA, it is unsuitable for this scenario because the laptop's video output port is HDMI, not DisplayPort. The physical and electrical interfaces are different, preventing a connection between the laptop and this specific adapter.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 220-1201 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 220-1201 exam.