312-50V9 Question #112: Real Exam Question with Answer & Explanation

The correct answer is D: Reduce parallel connections on congestion. The 'Reduce parallel connections on congestion' setting in Nessus monitors network throughput and automatically throttles scan intensity when the network pipe approaches capacity.

Question

Which of the following settings enables Nessus to detect when it is sending too many packets and the network pipe is approaching capacity?

Options

ANetstat WMI Scan
BSilent Dependencies
CConsider unscanned ports as closed
DReduce parallel connections on congestion

Explanation

The 'Reduce parallel connections on congestion' setting in Nessus monitors network throughput and automatically throttles scan intensity when the network pipe approaches capacity.

Common mistakes.

A. Netstat WMI Scan is a setting that uses Windows Management Instrumentation to enumerate open ports and active connections on Windows hosts, and has no relation to detecting or managing network congestion caused by the scanner.
B. Silent Dependencies is a Nessus plugin behavior setting that suppresses execution of plugins whose prerequisite checks have not been satisfied, which is unrelated to controlling scan-induced network congestion.
C. 'Consider unscanned ports as closed' instructs Nessus to treat any port not explicitly scanned as closed when evaluating plugin logic, and provides no mechanism for detecting or responding to network congestion.

Concept tested. Nessus scan throttling and congestion detection settings

Reference. https://docs.tenable.com/nessus/Content/ScanSettings.htm

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