Physical security can be increased by which three activities? (Choose three.)

Question

Options

• AAdding more IT personnel
• BAdding live security guards
• CChanging from smart cards to bar code badges
• DAdding concentric security zones to increase "depth of security"
• EAdding password or fingerprint verification at a card-reading checkpoint

• A
  5% (2)
• B
  2% (1)
• C
  80% (33)
• E
  12% (5)

Explanation

There appears to be an error in the provided answer key - option C would actually decrease physical security, not increase it. The correct three answers for this "choose three" question are B, D, and E.

B (Live security guards) increases physical security through human judgment, deterrence, and real-time response to threats. D (Concentric security zones) implements "defense in depth," a foundational principle where multiple nested perimeters (fence → lobby → badge reader → locked room) force an attacker to breach several layers. E (Password or fingerprint verification at a card reader) adds multi-factor authentication - combining something you have (card) with something you know/are - making unauthorized access significantly harder.

Why the distractors are wrong:

• A (More IT personnel) addresses logical/cyber security staffing, not physical access control.
• C (Switching from smart cards to bar codes) is a downgrade - bar code badges are trivially copied with a camera or scanner, whereas smart cards use cryptographic chips.

Memory tip: Think "Guard, Depth, Factor" - physical security improves when you add human Guards, increase defensive Depth (layered zones), and require multiple Factors to authenticate. Anything that simplifies access (like bar codes replacing smart cards) is a red flag, not an improvement.

No community discussion yet for this question.