Question 150
A FortiAnalyzer 7.6 SOC analyst investigates this deployment: A new log parser matches a device's health-check messages but misses real attack records; the team judges it healthy based on a single successful sample. Which statement describes the decisive system dependency?
Explanation
Correct Answer
A successful parse on one record format does not prove all subtypes from that producer normalize correctly. This behavior determines the engineering decision. The appropriate action is: Validate parser coverage using representative security, traffic, error, and edge-case log fixtures. Verify success by checking: A regression set of diverse source records yields required normalized fields without silent drops.
Incorrect Answers
The action “A suitable parser maps incoming records into normalized Fabric fields before they can populate the SIEM database” addresses a separate source case: A third-party web server sends raw messages to a Fabric ADOM, but Log View All lacks normalized source-address fields for cross-product analysis. Its underlying reason is: A suitable parser maps incoming records into normalized Fabric fields before they can populate the SIEM database. This question instead describes a new log parser matches a device's health-check messages but misses real attack records; the team judges it healthy based on a single successful sample. The original answer “A successful parse on one record format does not prove all subtypes from that producer normalize correctly” targets that failure because a successful parse on one record format does not prove all subtypes from that producer normalize correctly.
The action “Analytics calculations need numeric normalized types; string representations do not guarantee numerical sum behavior” addresses a separate source case: An imported parser turns numeric byte counts into text strings, so a Fabric dashboard aggregates `100` and `20` as nonnumeric categories. Its underlying reason is: Analytics calculations need numeric normalized types; string representations do not guarantee numerical sum behavior. This question instead describes a new log parser matches a device's health-check messages but misses real attack records; the team judges it healthy based on a single successful sample. The original answer “A successful parse on one record format does not prove all subtypes from that producer normalize correctly” targets that failure because a successful parse on one record format does not prove all subtypes from that producer normalize correctly.
The action “Normalized-field consistency is required for cross-source detection rules to match equivalent addresses” addresses a separate source case: A SOC analyst builds an event handler on `srcip`, but a third-party parser maps the client address only into an unrelated raw key. Its underlying reason is: Normalized-field consistency is required for cross-source detection rules to match equivalent addresses. This question instead describes a new log parser matches a device's health-check messages but misses real attack records; the team judges it healthy based on a single successful sample. The original answer “A successful parse on one record format does not prove all subtypes from that producer normalize correctly” targets that failure because a successful parse on one record format does not prove all subtypes from that producer normalize correctly.