Which of the following can cause a kernel panic message after a system reboot?

Question

Options

• AProcessor failure
• BPXE boot failure
• CUSB device failure
• DDrive failure

• A
  3% (1)
• B
  6% (2)
• C
  3% (1)
• D
  88% (30)

Explanation

A kernel panic is a fatal system error from which the kernel cannot recover, similar to a Windows BSOD. Drive failure (D) is a direct and well-known cause of kernel panics at boot time because the kernel must successfully locate and mount the root filesystem (/) from the drive during startup. If the drive has failed or is unreadable, the kernel cannot mount the root filesystem and immediately panics with messages such as 'VFS: Unable to mount root fs on unknown-block' or 'Kernel panic - not syncing: VFS: Unable to mount root fs.' Processor failure (A) would typically prevent the system from booting at all rather than producing a kernel panic message. PXE boot failure (B) simply means the system cannot network-boot and will either fall back to local boot or display a boot error - it does not cause a kernel panic. USB device failure (C) rarely causes a kernel panic; the kernel typically logs a device error and continues booting without the USB device.

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