Neco 2017 Data Processing Question 30

Practice objective / multiple choice question 30 from the 2017 Neco Data Processing examination.

Neco 2017 Data Processing Objective / Multiple Choice Hard Difficulty

Question 30 NECO • 2017 • DATA_PROCESSING • objective

A cryptographic hash function produces a 128‑bit output, and its values are uniformly distributed. Using the birthday‑paradox approximation, estimate the probability that in a collection of one million \(10^{6}\) distinct files at least two files have the same hash value. Express your answer in scientific notation (e.g., \(1.2 \times 10^{-27}\)).

A. 2.5 \times 10^{-27}

B. 1.0 \times 10^{-27}

Correct Answer C. 1.5 \times 10^{-27}

D. 1.5 \times 10^{-26}

Correct Answer

Correct Option:

1.5 \times 10^{-27}

This is Neco 2017 Data Processing Question 30. It is one of the objective questions from the 2017 Neco Data Processing examination.

Difficulty level: Hard .

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