220-1201 Practice Question: That their laptop's Bluetooth mouse stops working…

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

• ✗

  Uninstall the mouse driver and reboot.

  Why it's wrong here

  Uninstalling the mouse driver is generally an inappropriate first step for a Bluetooth mouse connectivity issue. Most Bluetooth mice utilize generic Human Interface Device (HID) drivers provided by the operating system, making a specific "mouse driver" uninstall less impactful or even impossible. Furthermore, the problem is more likely rooted in the Bluetooth adapter's state or its own driver, not the peripheral's specific driver, making this action an unnecessary and potentially disruptive misdiagnosis.

• ✓

  Disable and re-enable the Bluetooth adapter in Device Manager.

  Why this is correct

  Disabling and re-enabling the Bluetooth adapter in Device Manager performs a soft reset of the Bluetooth radio and its associated software stack. This action effectively power cycles the module and reinitializes its services, clearing any transient errors, hung states, or minor software glitches that might prevent proper communication, especially after the laptop wakes from sleep. It's a non-destructive and highly effective first troubleshooting step that often resolves connectivity issues without affecting other paired devices.

• ✗

  Change the mouse's Bluetooth pairing to a different channel.

  Why it's wrong here

  Bluetooth technology employs Frequency Hopping Spread Spectrum (FHSS), where devices automatically and rapidly switch between 79 different channels within the 2.4 GHz ISM band to maintain a robust connection and avoid interference. This channel management is entirely automated by the Bluetooth stack and hardware; users do not have the ability to manually select or change a mouse's Bluetooth pairing to a different channel. Therefore, this option is based on a fundamental misunderstanding of Bluetooth operation.

• ✗

  Update the laptop's BIOS to the latest version.

  Why it's wrong here

  Updating the laptop's BIOS (Basic Input/Output System) or UEFI firmware is a low-level operation primarily concerned with hardware initialization, system boot, and fundamental power management. While a BIOS update *could* resolve deep-seated hardware compatibility issues or critical power state bugs affecting the Bluetooth module, a simple, intermittent mouse connectivity problem is far more likely to stem from a transient driver issue or the Bluetooth adapter's operational state. This action is overly aggressive, carries potential risks, and is generally not warranted for such a symptom.

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