Which three situations can physical security systems help prevent? (Choose three.)

Question

Options

• ANetwork viruses
• BAccidental EPO activation
• CTheft of generator batteries
• DPower outages caused by the utility company
• ECircuit overloads due to unauthorized addition of servers

• A
  10% (4)
• B
  83% (34)
• D
  2% (1)
• E
  5% (2)

Explanation

Note: The correct answer shown ("B") appears to be a display truncation - for a "choose three" question, the full correct answer is B, C, and E.

Physical security controls - such as locks, access badges, surveillance cameras, and protective covers - address threats that require physical presence or proximity to cause harm. Accidental EPO (Emergency Power Off) activation (B) is prevented by placing protective covers or guards over EPO buttons, stopping someone from hitting them unintentionally. Theft of generator batteries (C) is prevented through locked enclosures, fencing, and camera surveillance around physical infrastructure. Circuit overloads from unauthorized server additions (E) are prevented by controlling physical access to server rooms - if unauthorized personnel can't enter, they can't add hardware.

A (network viruses) is wrong because malware spreads through software and network vectors, not physical access - a locked door doesn't stop a phishing email. D (utility-caused power outages) is wrong because those originate outside the facility entirely; no amount of on-site physical security can control the utility grid.

Memory tip: Think of physical security as controlling who can touch what. If a threat requires someone to physically reach a piece of hardware (a button, a battery, a rack), physical security can block it. If the threat travels over a wire or the air (viruses, grid failures), physical security is irrelevant.

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