XK0-005 Domain 4: Troubleshooting

Container cannot bind port 80. Reason?

Multiple choice — select one answer

Answer choices

  1. a. dmesg for disk errors and smartctl health
  2. b. /etc/fstab UUID typo prevents mount
  3. c. Non-root cannot bind privileged ports or port in use
  4. d. /etc/resolv.conf nameservers and dig test

Architectural breakdown & explanation

Ports below 1024 or conflicts block bind.

Correct answer(s): c. Non-root cannot bind privileged ports or port in use

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

Official documentation & study links

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