After a county OS upgrade, a previously working Wi-Fi adapter stops connecting until the vendor driver is rolled back or updated. What fault class does this illustrate?
Select an answer to reveal the explanation.
Short Explanation
OS upgrades love to orphan Wi-Fi drivers. When yesterday’s adapter dies after patching and a driver rollback/update fixes it, call it a driver issue—not haunted drywall.
Full Explanation
WLAN connectivity often fails after operating-system upgrades when the vendor driver becomes incompatible or corrupted relative to the new kernel/stack. Restoring connectivity with a driver update or rollback confirms a driver-class fault rather than a sudden RF material change or unrelated portal/WEP explanations.