An air-gapped system is physically isolated from unsecured networks (like the public Internet), ensuring that there is no direct or indirect network connection. This is the most effective way to prevent Internet-based access to sensitive systems.
[Reference:, CompTIA Security+ SY0-701 Official Study Guide, Domain 3.2: "Air-gapped systems are isolated from external networks and prevent Internet access.", Exam Objectives 3.2: “Summarize security implications of embedded and specialized systems.”, , ]
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