ITPEC IP October 2020 Question 39
ITPEC IP October 2020 — Question 39 of 100
Increasing the password from four to six uppercase letters multiplies the search space by 676. A four-character password has 26⁴ possibilities and a six-character password has 26⁶. Their ratio is 26⁶ ÷ 26⁴ = 26² = 676.
Answer (d)
Why not others:
- 2 is only the increase in length, not the multiplicative growth
- 24 and 52 do not account for two additional independent positions with 26 choices each
Key rule: For an alphabet of N symbols and length L, brute-force combinations equal Nᴸ; each extra character multiplies the space by N.
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