Crucial Exams

CompTIA Linux+ XK0-006 (V8) Practice Question

While troubleshooting firewall rules on a new application host, you must determine which TCP ports between 8000 and 8050 are listening on the server 10.0.5.20. The command must:

  • perform a zero-I/O scan that does not transmit data
  • display verbose output for each probe
  • skip DNS look-ups to speed execution
  • use the default TCP protocol

Which single netcat (nc) command meets all of these requirements?

  • nc -z -v -n 10.0.5.20 8000-8050

  • nc -l -v -n 10.0.5.20 8000-8050

  • nc -v 10.0.5.20 8000-8050

  • nc -z -u -v -n 10.0.5.20 8000-8050

CompTIA Linux+ XK0-006 (V8)
System Management
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