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N10-009 · Question #624

N10-009 Question #624: Real Exam Question with Answer & Explanation

The correct answer is B: MAC filtering. The network jack is allowing access only for devices with approved MAC addresses. The personal laptop fails because its MAC address is not on the allowed list, while the company- issued laptop succeeds because its MAC address is authorized.

Submitted by andreas_gr· Mar 6, 2026Network Security

Question

An employee plugs a personal laptop into a network jack in a secured IDF but cannot obtain a network address. A network administrator then plugs a company-issued laptop into this same jack and successfully gains access. Which of the following security features best explains this situation?

Options

  • AUntrusted zone
  • BMAC filtering
  • CACL
  • DScreened subnet

Explanation

The network jack is allowing access only for devices with approved MAC addresses. The personal laptop fails because its MAC address is not on the allowed list, while the company- issued laptop succeeds because its MAC address is authorized.

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