Security Architecture第 39 / 100 题
Which control physically separates a highly sensitive network from all other networks and the internet?
a.VPN
b.Screened subnet
c.Air gap
d.NAT
解析
An air gap isolates a system or network so it has no physical or logical connection to untrusted networks. It is used for critical systems like industrial controls. Data transfer requires manual, controlled processes, which reduces remote attack surface.
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