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CompTIA Security+ study material · question 451 of 611

How does malware most commonly reach an air-gapped network?

  1. Through a rogue wireless access point
  2. Through a DNS tunnel
  3. On removable media or a maintenance laptop
  4. Through a misconfigured firewall rule
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Answer: C. On removable media or a maintenance laptop

Something has to cross the gap for updates and support, and that crossing is the only available path.

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