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XK0-005 Domain 4: Troubleshooting

Filesystem read-only remounted. Check?

Multiple choice — select one answer

Answer choices

  1. a. /etc/resolv.conf nameservers and dig test
  2. b. dmesg for disk errors and smartctl health
  3. c. chmod +x script or invoke with bash
  4. d. I/O wait or blocked processes

Architectural breakdown & explanation

Disk errors trigger read-only remounts protecting data.

Correct answer(s): b. dmesg for disk errors and smartctl health

Exam domain: Domain 4: Troubleshooting (18% weight on the official guide).

Official documentation & study links

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