ITPEC IP April 2026 Question 42
ITPEC IP April 2026 — Question 42 of 100
It resists reuse of an intercepted password — the displayed numbers change at every authentication.
The user remembers secret positions and order, not fixed digits. A tapped entry such as 5025 is only the value for that random matrix; the next matrix produces different digits, so replaying 5025 fails.
Answer (c)
Why not others: (a) secret positions should still be protected and changed if exposed; (b) revealing them gives away the lasting secret; (d) the method uses remembered knowledge, not a biological characteristic.
Key rule: Randomized matrix authentication creates a changing response from a fixed secret pattern, limiting the value of an observed response.
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