GIAC Machine Learning Engineer
Domain 1Objective 3
Probability and Frequency GMLE Practice Questions (Page 8)
Part of the Foundational Data Science and Statistics domain, which makes up ~41% of our current practice bank. GIAC (SANS) does not publish an official question count, but from its 180-minute exam (~70–120 total, ~29–49 in this domain), expect 7–12 from this objective — we provide 46 practice questions to prepare you well beyond it. (estimate)
46questions here
10free pages
7concepts
Questions 36–40
- 36
In probability theory, what is the sample space for an experiment?
Select an answer first - 37
A security system detects 99% of intrusions and has a 1% false positive rate. Intrusions occur in 0.1% of all events. What is the probability that an event flagged as an intrusion is actually an intrusion?
Select an answer first - 38
A support team models daily ticket volume as a discrete random variable X with P(X=0)=0.1, P(X=1)=0.3, P(X=2)=0.4, P(X=3)=0.2. What is the expected number of tickets per day?
Select an answer first - 39
In a dataset of 50 observations, a particular value appears 10 times. What is the relative frequency of that value?
Select an answer first - 40
A cybersecurity team is evaluating an anomaly detection system. The system flags 3% of all network connections. Among connections that are actual attacks, the system flags 98%. Among connections that are not attacks, the system flags 2%. The team knows that 0.5% of all connections are attacks. A connection is flagged. What is the probability that it is an attack?
Select an answer first
Finished these 5 questions?
Review the revealed explanations, or continue through the curriculum.
Free Basic Practice is a study aid with revealable answers — not a scored exam. Examers.io is independent and not affiliated with or endorsed by GIAC (SANS). “GMLE” is a trademark of its owner, used for identification only.