A research facility is developing highly classified technology and needs to ensure its development network is completely isolated from the internet and the main corporate network. The primary security goal is to prevent any form of remote access or data exfiltration through network channels. Which of the following security measures would BEST achieve this level of isolation?
An air-gapped network is the most effective solution because it involves complete physical isolation from any other network, including the internet and internal corporate networks. This physical separation eliminates the pathways for remote network-based attacks. While firewalls, VLANs, and SASE provide significant security, they do not offer the absolute isolation of an air gap. Logical segmentation (VLANs) separates traffic but does not physically prevent connections. Firewalls and SASE manage and secure traffic between networks but presume connectivity exists.
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