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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Reporting and Communication | 16% | - Reporting
|
| Topic 2: Vulnerability Management | 26% | - Vulnerability Assessment
|
| Topic 3: Security Operations | 34% | - Threat Intelligence and Hunting
|
| Topic 4: Incident Response and Management | 24% | - Incident Investigation
|
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問題 #142
Which of the following should a cybersecurity analyst utilize when a notification is inaccurate?
答案：B
解題說明：
Alert tuning is the appropriate response when a security notification is inaccurate. Detection technologies depend on rules, thresholds, signatures, behavioral models, correlation conditions, exclusions, and environmental context. When these settings are too broad or poorly calibrated, the result may be false positives, unnecessary notifications, or detections that do not accurately represent the underlying activity.
Tuning involves examining the detection that generated the notification and modifying its logic so it more accurately distinguishes malicious activity from legitimate behavior. This can include adjusting thresholds, excluding known-benign entities, refining queries, changing correlation windows, or adding contextual conditions. Microsoft Sentinel specifically recommends modifying analytics rules or creating appropriate exceptions to manage false positives, and its current guidance identifies tuning as a method of reducing noise and improving detection quality.
Data enrichment adds additional context but does not inherently correct an inaccurate detection. Dashboard creation changes visualization rather than detection logic. Threat hunting is a proactive investigative activity used to search for threats that may not have generated alerts; it is not the primary technique for correcting inaccurate notifications.
Study Guide Reference: Security Operations # Security Monitoring # Detection Engineering # Rule/Alert Tuning # False Positives and False Negatives # Detection Optimization.
問題 #143
A binary file that might contain malicious code is hosted on an isolated machine. An analyst wants to quickly detect the malicious code.
Which of the following should the analyst use?
答案：B
解題說明：
YARA is specifically designed to identify and classify suspicious or malicious files through pattern-based rules . A YARA rule can contain textual strings, hexadecimal byte sequences, regular expressions, metadata, file characteristics, and Boolean conditions. This makes YARA particularly effective when an analyst already has a binary specimen on an isolated analysis system and needs to determine whether it contains patterns associated with malware.
The official YARA documentation describes YARA as a tool for helping malware researchers identify and classify malware samples using textual and binary patterns. Rules consist primarily of strings and logical conditions that determine whether a file matches the defined characteristics.
The strings utility can reveal printable characters embedded within a binary and is useful during preliminary static analysis, but it does not itself classify the file against structured malware-detection signatures.
VirusTotal can perform multi-engine analysis, but submitting a potentially sensitive binary from an isolated environment to an external service may be inappropriate and is unnecessary when local YARA detection is available. WHOIS provides registration information about internet resources and has no direct binary- malware detection capability.
Study Guide Reference: Security Operations # Malware Analysis # Static Analysis # YARA # Signature and Pattern Matching # Binary/File Analysis.
問題 #144
Which of the following best explains compensating controls?
答案：C
解題說明：
A compensating control is an alternative safeguard implemented when the primary control or recommended remediation cannot be applied, often due to technical, operational, or business constraints. Its purpose is to reduce the associated risk to an acceptable level when the underlying vulnerability cannot be directly remediated.
問題 #145
A security analyst discovers multiple log entries from a recently acquired tool that was bundled as a YUM package. Those entries point to attempts of privilege escalation. Which of the following Is the most likely explanation?
答案：A
解題說明：
Installing a YUM package without performing a GPG signature check means its authenticity and integrity were never verified. This allows a tampered or malicious package to be installed, which can then attempt privilege escalation - matching the suspicious log entries observed by the analyst.
問題 #146
The Chief Information Officer (CIO) is requiring users to phase out a legacy system that no longer receives security updates because the system will be decommissioned soon. Which of the following risk management strategies is the CIO using?
答案：D
解題說明：
Decommissioning the legacy system eliminates the activity and asset creating the risk, which is risk avoidance.
問題 #147
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