[Q73-Q94] Pass CompTIA CS0-004 Exam in First Attempt Guaranteed [Nov-2026]

Published date November 4, 2026

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Pass CompTIA CS0-004 Exam in First Attempt Guaranteed [Nov-2026]

Exam Sure Pass CompTIA Certification with CS0-004 exam questions

CompTIA CS0-004 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Incident Response and Management	24%	– Incident Handling and Investigation 1. Incident Response Lifecycle and Frameworks 2. Post-Incident Activities and Lessons Learned 3. Containment, Eradication, and Recovery 4. Evidence Collection and Forensic Fundamentals
Topic 2: Security Operations	34%	– Security Monitoring and Analysis 1. SOAR, EDR, and XDR Concepts 2. SIEM Implementation and Analysis 3. Threat Detection and Threat Hunting 4. Endpoint, Network, and Cloud Monitoring 5. System and Network Architecture Security
Topic 3: Vulnerability Management	26%	– Vulnerability Assessment and Remediation 1. Vulnerability Scanning and Assessment 2. Remediation Verification and Tracking 3. Cloud and Container Security Vulnerabilities 4. Vulnerability Prioritization and Risk Assessment
Topic 4: Reporting and Communication	16%	– Documentation and Stakeholder Communication 1. Incident Reporting Requirements and Compliance 2. Security Reporting and Documentation 3. Risk Communication to Technical and Business Audiences

NO.73 Which of the following would an analyst use to assess a server for vulnerabilities using the OWASP framework?

Honeypot

Watering hole

Directory traversal

Evil twin

Directory traversal is a common web application vulnerability covered by OWASP testing methodologies. An analyst using the OWASP framework would test for directory traversal vulnerabilities to determine whether an attacker can access restricted files and directories on a server through improper input validation.

NO.74 An analyst needs to perform a baseline security evaluation of the company’s cloud infrastructure.
Which of the following tools is most appropriate for this task?

Open Vulnerability Assessment Scanner (OpenVAS)

Nikto

ScoutSuite

Metasploit

ScoutSuite is a cloud security auditing tool that evaluates cloud configurations and identifies security risks across cloud environments. OpenVAS scans vulnerabilities, Nikto scans web servers, and Metasploit is primarily used for exploitation testing.

NO.75 Which of the following does a phishing campaign click rate measure?

The effectiveness of an organization’s email filters

The false-positive rate of data leakage prevention behavior

The employees’ security awareness

The speed of responding to a social engineering attack

A phishing simulation click rate measures user susceptibility to phishing and is therefore primarily an indicator of employee security awareness and behavior . If a simulated phishing message is delivered to employees and a percentage of recipients click the embedded malicious-style link, that percentage provides evidence about how effectively users are recognizing and resisting social-engineering attempts.
NIST research specifically identifies phishing-simulation click rates as a commonly used measure for evaluating the effectiveness of phishing-related security-awareness programs. NIST also cautions that raw click rates should be interpreted in context because phishing messages differ substantially in difficulty; the Phish Scale was developed to provide context for click-rate and report-rate results.
The metric does not primarily measure email-filter effectiveness because a controlled simulation may intentionally bypass or be allowlisted through technical filtering so employee behavior can be evaluated. It is unrelated to data-loss prevention false positives. It also does not directly measure response speed; metrics such as reporting time or mean time to respond would be more appropriate for that purpose.
Therefore, click rate is fundamentally a human-risk and awareness metric .
Study Guide Reference: Reporting and Communication # Security Metrics # Security Awareness # Phishing Simulations # Click Rate # Reporting Rate # Human Risk Measurement.

NO.76 A security operations center analyst is using the command line to display specific traffic. The analyst uses the following command:
$tshark -r file.pcap -Y “http or udp”
Which of the following will the command line display?

Encrypted web requests and Domain Name System (DNS) traffic

Unencrypted web requests and DNS traffic

Neither encrypted nor unencrypted web and DNS traffic

Both encrypted and unencrypted web and DNS traffic

The http display filter selects plaintext HTTP traffic, while udp includes UDP-based traffic such as standard DNS queries. HTTPS traffic is not matched as HTTP because it is encrypted.

NO.77 A security analyst reviews the following report:

Which of the following explain the reason the analyst gives 1.15 the highest priority for remediation? (Choose two.)

Highly privileged user accounts can be used to gain access to the system.

It requires the lowest level of permissions to execute.

The attacker can use elevated privileges to execute arbitrary code.

The vulnerable software can be accessed from remote networks.

The system must be accessed with an interactive session for exploitation.

It requires user interaction to exploit the vulnerability.

The CVSS vector for vulnerability 1.15 includes PR:N, which means no privileges are required to exploit the vulnerability. This makes exploitation easier and increases risk.
The vector also includes AV:N, which indicates the vulnerability is exploitable over a network.
Remote accessibility significantly increases exposure because attackers do not need local access to the target system.

NO.78 Which of the following best describes the reason a root cause analysis is an important part of the incident response process?

Compliance teams can be legally required to conduct a post-incident root cause analysis to satisfy regulatory requirements.

Response teams can use the analysis to isolate a system while the incident is ongoing to prevent further contamination.

The organization can use the results of the analysis to provide stakeholders with assurances that customer data was not disclosed.

The leadership team can better allocate resources to address systemic issues that span multiple groups in an organization.

Root cause analysis identifies the underlying systemic issues that allowed the incident to occur, enabling leadership to address weaknesses across processes, technology, or teams and allocate resources effectively to prevent recurrence.

NO.79 A security team deploys a new scanning solution that requires root, domain administrator, and local server administrator permissions on all systems.
Which of the following is the best way to help mitigate the risk for this level of access?

Enabling single sign-on for all administrators

Integrating token-based authentication using a privileged access management (PAM) solution

Using temporary, one-time passwords as part of the login process

Configuring agentless scanning for critical targets

A Privileged Access Management (PAM) solution provides the strongest control for credentials with root, domain administrator, and local administrative authority. Vulnerability scanners frequently require elevated permissions for credentialed assessments, but permanently exposing those credentials to scanning infrastructure creates substantial risk. If compromised, the scanner could provide an attacker with privileged access across a large portion of the environment.
PAM systems can protect privileged credentials through centralized vaulting, controlled checkout, tokenized or brokered authentication, rotation, session restrictions, auditing, and time-limited privilege. This aligns with the principle of least privilege, under which entities should receive only the access necessary to perform assigned functions. NIST defines least privilege in precisely this manner and applies the principle to privileged accounts.
Single sign-on improves authentication convenience but does not adequately secure highly privileged scanning credentials. A simple one-time password adds authentication assurance but lacks the credential governance and lifecycle controls provided by PAM. Agentless scanning changes scanner architecture but does not solve the underlying privileged-access requirement.
The strongest design is therefore to place high-impact administrative credentials under dedicated privileged- access controls rather than treating them as ordinary service credentials.
Study Guide Reference: Vulnerability Management # Credentialed Scanning # Scanner Permissions # PAM
# Least Privilege # Credential Vaulting and Rotation.

NO.80 Which of the following allows an organization to leverage AI in various forms while protecting business objectives and data?

Usage policies

Prompt engineering

Non-disclosure agreement

Incident response policy

AI usage policies establish organizational boundaries for how artificial intelligence systems may be selected, accessed, configured, and used. They allow an organization to obtain operational benefits from AI while controlling risks involving confidential information, intellectual property, regulated data, model outputs, external AI services, and inappropriate automation. A strong policy can define approved platforms, prohibited data categories, validation requirements, human oversight, retention rules, acceptable use, and escalation procedures.
Prompt engineering is a technical method for constructing inputs that produce more useful model responses. It can improve output quality but does not establish enterprise-wide safeguards for protecting business objectives or sensitive information. A non-disclosure agreement establishes contractual confidentiality obligations between parties; it cannot govern the full technical and operational use of AI systems. An incident response policy determines how security incidents are managed and escalated, but it is reactive and not designed to establish routine AI governance.
CS0-004 explicitly addresses AI within Security Operations. The objectives identify AI risks including hallucinations, data exposure, model poisoning, and malicious prompts and identify governance considerations including legal or regulatory compliance and AI usage policies . AI use cases include log analysis, artifact comparison, incident investigation, event correlation, and automation.
Study Guide Reference: Security Operations # AI in Security Operations # AI Risks # Governance # AI Usage Policies # Data Protection.

NO.81 Which of the following best explains the purpose of the Pyramid of Pain in threat intelligence?

To show that changing to different types of indicators and behaviors is difficult for an adversary

To measure how much operational damage a threat actor can cause before detection occurs

To compare open-source intelligence (OSINT) with closed-source intelligence based on collection cost

To organize attack activity into categories such as spoofing, tampering, and repudiation

The Pyramid of Pain ranks indicators by how difficult they are for an attacker to replace. IP addresses and hashes are easy to change, while tools and TTPs are much harder.

NO.82 Which of the following is a reason an executive summary is important for incident response communication?

It uses quantifiable metrics to identify the root cause.

It is a concise way for the leadership team to understand the event.

It is included as part of privacy disclosure statements.

It provides a detailed explanation of the incident.

An executive summary provides a brief, high-level overview of the incident so leadership and nontechnical stakeholders can quickly understand what happened, the impact on the organization, and the current status of the response without needing to review detailed technical information.

NO.83 Which of the following does a phishing campaign click rate measure?

The effectiveness of an organization’s email filters

The false-positive rate of data leakage prevention behavior

The employees’ security awareness

The speed of responding to a social engineering attack

The click rate shows how many employees interacted with simulated phishing content, indicating their ability to recognize and avoid social engineering attempts.

NO.84 A cybersecurity analyst requests a paid subscription to a threat intelligence feed relevant to a company’s industry.
Which of the following best describes this type of feed?

Open-source intelligence

Threat mapping

Threat modeling

Closed-source intelligence

A paid, subscription-based threat intelligence service is best classified as closed-source intelligence because access is restricted to authorized subscribers rather than being freely available to the public. Commercial threat-intelligence providers typically collect, analyze, correlate, and curate indicators and adversary information before distributing that intelligence through authenticated portals, APIs, or feeds.
NIST identifies several external intelligence-source categories, including open-source repositories, commercial threat feeds, and external information-sharing partners . A commercial feed relevant to a company’s specific industry may provide higher-context intelligence regarding threat actors, infrastructure, malware, vulnerabilities, campaigns, and indicators affecting that vertical.
OSINT, by contrast, originates from publicly accessible sources and normally does not require restricted subscription access. Threat mapping is the activity of associating adversary behavior or intelligence with infrastructure, campaigns, frameworks, or organizational assets. Threat modeling is a structured process used to identify potential threats and weaknesses in systems or applications; it is not an intelligence-source classification.
The examination clue is “paid subscription.” Restricted commercial access distinguishes the feed from publicly obtainable OSINT.
Study Guide Reference: Security Operations # Threat Intelligence # Intelligence Sources # Open-Source Intelligence # Closed/Commercial Intelligence # Industry-Specific Threat Feeds.

NO.85 Based on recent alerts, a security analyst thinks a web application server was compromised. The analyst reviews the following server output:

Which of the following best describes what has occurred?

An initiated unauthorized session

Too many users logged in at the same time

High resource consumption

Abnormal idle times for each user

The web-service account www has an interactive tty2 session originating from an external IP address. A service account should not normally have an interactive remote login, indicating unauthorized access.

NO.86 An analyst reviews alerts that indicate a number of different users had a spike in login attempts from the same IP. Using the security information and event management (SIEM) system, the analyst finds that a number of users received the following email:

Which of the following best describes this activity?

URL shortening

Whaling

Spoofing

Social engineering

The email uses a forged sender address that appears to come from an internal HR department while actually originating from an external domain, indicating impersonation intended to deceive recipients.

NO.87 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?

strings

VirusTotal

WHOIS

Yet Another Recursive Acronym (YARA)

YARA scans files locally for patterns and signatures associated with known malware. It is appropriate for an isolated system, whereas VirusTotal requires uploading or querying the file online.

NO.88 When vulnerabilities are identified weeks after the disclosure, which of the following KPIs most likely needs to be adjusted?

Mean time to acknowledge

Mean time to respond

Mean time to detect

Mean time to resolve

Mean Time to Detect (MTTD) measures how quickly vulnerabilities or security issues are identified after they become known or occur. If vulnerabilities are being discovered weeks after public disclosure, the organization’s detection process is too slow, indicating that the MTTD KPI needs improvement.

NO.89 A security analyst detects that a large amount of data is being exfiltrated. The data contains confidential customer information. Which of the following should be done first in this situation?

Identify stakeholders and communicate with them.

Contact public relations so they can communicate with customers.

Inform law enforcement about the activities.

Declare an incident and contain the affected servers.

NO.90 Which of the following best explains the importance of communicating unusual alert findings?

To provide better metrics related to activities

To identify who found the activity

To ensure activities are properly investigated

To define how each activity is triaged

Communicating unusual alert findings ensures that potentially significant security activities receive appropriate attention and investigation. What initially appears unusual may indicate a developing threat, compromise, or control failure, and timely communication helps analysts validate, investigate, and respond before the issue escalates.

NO.91 Which of the following is the best strategy for prioritizing vulnerabilities for remediation?

Remediate from the beginning to the end of the report.

Remediate the findings based on the description of the vulnerabilities.

Remediate the vulnerabilities based on the CVE score only.

Remediate based on the organization’s timeframe in the procedures.

Organizations establish vulnerability management procedures that define remediation timeframes based on risk levels, asset criticality, and business requirements. Prioritizing remediation according to these documented procedures ensures vulnerabilities are addressed consistently and in alignment with the organization’s risk management strategy rather than relying solely on report order, descriptions, or CVE scores.

NO.92 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?

strings

VirusTotal

WHOIS

Yet Another Recursive Acronym (YARA)

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.

NO.93 An analyst receives an alert that a user clicked on a malicious link. The analyst verifies that the link is malicious and was intended to capture credentials. The analyst verifies that the user visited the website, but no evidence indicates that the credentials were used. The analyst recommends that the user take remedial training and closes the case. Which of the following steps in the incident response process did the analyst neglect?

Analysis

Containment

Recovery

Post-incident

The analyst validated the incident but failed to contain the threat, such as blocking the malicious URL/domain and taking precautionary action on the user’s credentials before closing the case.

NO.94 A security operations center (SOC) analyst investigates the results of a password spray test conducted by the vulnerability management team.
The analyst must:

Identify Linux systems that have successful and unsuccessful logins with username “User1”.
Create an output report named “linux-events” of all the events to a flat file.
The analyst issues the following console command:
ls /var/log/
The shortened output of the command is below:
Which of the following commands should the analyst use to meet the report output requirements?

cat /var/log/sssd | grep “User1” > linux-events.txt

cat /var/log/faillog.log | grep “User1” > linux-events.txt

cat /var/log/syslog | grep “User1” > linux-events.txt

cat /var/log/auth.log | grep “User1” > linux-events.txt

/var/log/auth.log is the appropriate source because it records authentication and authorization activity on Debian/Ubuntu-style Linux systems, including password-related events, SSH logins, PAM authentication, and other authorization events. Canonical’s Ubuntu documentation specifically identifies /var/log/auth.log as the authorization log used for password prompts, sudo, and remote logins.
The command performs three operations. cat /var/log/auth.log sends the log contents to standard output. The pipe forwards that data to grep “User1”, which selects records containing the required username. Finally, > linux-events.txt redirects the resulting matching records into the requested flat-file report. Because auth.log can contain both accepted and rejected authentication activity, the command can capture successful and unsuccessful events associated with User1.
sssd is not the general authentication log path shown in the scenario and may contain only SSSD-specific events. A faillog-oriented source emphasizes failed logins and therefore does not satisfy the requirement to collect both successful and failed activity. /var/log/syslog contains broad system messages but is less precise than the dedicated authentication log.
Study Guide Reference: Security Operations # Linux Log Analysis # /var/log/auth.log # cat # grep # Output Redirection # Authentication Investigation.

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