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220-1201 Practice Question: A technician is configuring a conference room…
A technician is configuring a conference room where a laptop must wirelessly display its screen to a 4K projector without using any cables. The projector supports Miracast. What must the technician verify on the laptop?
⚠ Common exam trap
CompTIA often tests the misconception that Miracast requires a shared Wi-Fi network (like a corporate SSID), when in fact it uses Wi-Fi Direct for a direct device-to-device connection.
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
✓
The laptop supports Miracast and Wi-Fi is enabled.
Miracast uses Wi-Fi Direct to establish a peer-to-peer wireless link between devices, so the laptop must support Miracast and have Wi-Fi enabled. It does not require a shared Wi-Fi network or Bluetooth, as Miracast creates its own direct connection for screen mirroring.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The laptop has Bluetooth enabled.
Why it's wrong here
Miracast technology relies exclusively on Wi-Fi Direct for establishing a peer-to-peer wireless connection between devices to mirror a screen. Bluetooth, while a wireless communication standard, operates on a different frequency spectrum and protocol stack, primarily for short-range data transfer or peripheral connections like keyboards and mice. Therefore, having Bluetooth enabled on the laptop is entirely irrelevant to initiating or maintaining a Miracast session for screen mirroring.
- ✗
The laptop is connected to the same Wi-Fi network as the projector.
Why it's wrong here
Miracast is designed to establish a direct, peer-to-peer connection between the source device (laptop) and the display device (projector) using Wi-Fi Direct. This means the devices communicate directly with each other without needing an intermediary wireless access point or router. Consequently, both devices being connected to the same existing Wi-Fi network is not a prerequisite for Miracast functionality and does not facilitate the screen mirroring process.
- ✓
The laptop supports Miracast and Wi-Fi is enabled.
Why this is correct
For a laptop to successfully utilize Miracast for wireless screen mirroring, two fundamental conditions must be met. First, the laptop's hardware and operating system must natively support the Miracast standard, which typically involves a compatible wireless display adapter and drivers. Second, the laptop's Wi-Fi radio must be enabled and active, as Miracast exclusively leverages Wi-Fi Direct technology to create the necessary peer-to-peer connection for streaming audio and video.
- ✗
The laptop has an HDMI port.
Why it's wrong here
An HDMI (High-Definition Multimedia Interface) port provides a wired connection for transmitting uncompressed digital video and audio from a source device to a display. While HDMI is a common method for connecting laptops to projectors, the scenario specifically describes a need for wireless screen mirroring. Therefore, the presence of an HDMI port on the laptop is irrelevant to enabling Miracast, which is a wireless display technology.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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