Certified Network Defender (CND) — Question 50

Daniel who works as a network administrator has just deployed an IDS in his organization's network. He wants to calculate the False Positive rate for his implementation. Which of the following formulas will he use, to calculate the False Positive rate?

Answer options

• A. False Negative/True Negative+True Positive
• B. False Positive/False Positive+True Negative
• C. True Negative/False Negative+True Positive
• D. False Negative/False Negative+True Positive

Correct answer: B

Explanation

The correct formula for calculating the False Positive rate is B: False Positive divided by the sum of False Positive and True Negative. This measures the proportion of incorrect alerts relative to the total number of non-intrusions. The other options do not accurately define the False Positive rate, as they involve different variables that do not correctly represent the desired calculation.