[2025年02月09日]CS0-003練習試験問題集で試験99%合格率があります
最新の検証済みCS0-003問題と解答、合格保証もしくは全額返金
質問 # 66
A company has decided to expose several systems to the internet, The systems are currently available internally only. A security analyst is using a subset of CVSS3.1 exploitability metrics to prioritize the vulnerabilities that would be the most exploitable when the systems are exposed to the internet. The systems and the vulnerabilities are shown below:
Which of the following systems should be prioritized for patching?
- A. sullivan
- B. brown
- C. blane
- D. grey
正解：C
解説：
The system "blane" with the vulnerability name "snakedoctor" should be prioritized for patching as it has a network attack vector (AV:N), low attack complexity (AC:L), and high availability (A:H). These metrics indicate that it would be relatively easy to exploit this vulnerability over the internet, and the system is highly available. References: According to the CVSS v3.1 Specification Document, the exploitability metrics for CVSS are Attack Vector, Attack Complexity, Privileges Required, User Interaction, and Scope. These metrics measure how the vulnerability is accessed, the complexity of the attack, and the level of interaction and privileges required to exploit the vulnerability. The image shows a table with the values of these metrics for each system and vulnerability. Based on these values, the system "blane" has the highest exploitability score, as it has the most favorable conditions for an attacker. The other systems have either a lower attack vector, higher attack complexity, or lower availability, which make them less exploitable. Therefore, the system
"blane" should be patched first.
質問 # 67
During a cybersecurity incident, one of the web servers at the perimeter network was affected by ransomware. Which of the following actions should be performed immediately?
- A. Quarantine the server
- B. Update the OS to latest version.
- C. Shut down the server.
- D. Reimage the server
正解：A
解説：
Quarantining the server is the best action to perform immediately, as it isolates the affected server from the rest of the network and prevents the ransomware from spreading to other systems or data. Quarantining the server also preserves the evidence of the ransomware attack, which can be useful for forensic analysis and law enforcement investigation. The other actions are not as urgent as quarantining the server, as they may not stop the ransomware infection, or they may destroy valuable evidence. Shutting down the server may not remove the ransomware, and it may trigger a data deletion mechanism by the ransomware. Reimaging the server may restore its functionality, but it will also erase any traces of the ransomware and make recovery of encrypted data impossible. Updating the OS to the latest version may fix some vulnerabilities, but it will not remove the ransomware or decrypt the data. Official Reference:
https://www.cisa.gov/stopransomware/ransomware-guide
https://www.cisa.gov/sites/default/files/publications/Ransomware_Executive_One-Pager_and_Technical_Document-FINAL.pdf
https://www.cisa.gov/stopransomware/ive-been-hit-ransomware
質問 # 68
The security team at a company, which was a recent target of ransomware, compiled a list of hosts that were identified as impacted and in scope for this incident. Based on the following host list:
Which of the following systems was most pivotal to the threat actor in its distribution of the encryption binary via Group Policy?
- A. HQAdmin9
- B. WK7-Plant01
- C. DCEast01
- D. SQL01
- E. WK10-Sales07
正解：C
解説：
Based on the list of hosts and their functions, DCEast01, which is a Domain Controller, would be the most pivotal in the distribution of an encryption binary via Group Policy. Domain Controllers are responsible for security and administrative policies within a Windows Domain. Group Policy is a feature of Windows that facilitates a wide range of advanced settings that administrators can use to control the working environment of user accounts and computer accounts. Group Policy can be used to deploy software, which in this case would be the encryption binary of the ransomware. SQL01 is a database server and unlikely to be used for this purpose. WK10- Sales07 and WK7-Plant01 are client machines, and HQAdmin9, although it is a network admin laptop, would not typically be used to distribute policies across a network.
質問 # 69
A laptop that is company owned and managed is suspected to have malware. The company implemented centralized security logging. Which of the following log sources will confirm the malware infection?
- A. Firewall legs
- B. IDS logs
- C. XDR logs
- D. MFA logs
正解：C
解説：
XDR logs will confirm the malware infection because XDR is a system that collects and analyzes data from multiple sources, such as endpoints, networks, cloud applications, and email security, to detect and respond to advanced threats12. XDR can provide a comprehensive view of the attack chain and the context of the malware infection. Firewall logs, IDS logs, and MFA logs are not sufficient to confirm the malware infection, as they only provide partial or indirect information about the network traffic, intrusion attempts, or user authentication.
質問 # 70
A malicious actor has gained access to an internal network by means of social engineering. The actor does not want to lose access in order to continue the attack. Which of the following best describes the current stage of the Cyber Kill Chain that the threat actor is currently operating in?
- A. Weaponization
- B. Reconnaissance
- C. Exploitation
- D. Delivery
正解：C
解説：
The Cyber Kill Chain is a framework that describes the stages of a cyberattack from reconnaissance to actions on objectives. The exploitation stage is where attackers take advantage of the vulnerabilities they have discovered in previous stages to further infiltrate a target's network and achieve their objectives. In this case, the malicious actor has gained access to an internal network by means of social engineering and does not want to lose access in order to continue the attack. This indicates that the actor is in the exploitation stage of the Cyber Kill Chain. Official Reference: https://www.lockheedmartin.com/en-us/capabilities/cyber/cyber-kill-chain.html
質問 # 71
A security analyst performs various types of vulnerability scans. Review the vulnerability scan results to determine the type of scan that was executed and if a false positive occurred for each device.
Instructions:
Select the Results Generated drop-down option to determine if the results were generated from a credentialed scan, non-credentialed scan, or a compliance scan.
For ONLY the credentialed and non-credentialed scans, evaluate the results for false positives and check the findings that display false positives. NOTE: If you would like to uncheck an option that is currently selected, click on the option a second time.
Lastly, based on the vulnerability scan results, identify the type of Server by dragging the Server to the results.
The Linux Web Server, File-Print Server and Directory Server are draggable.
If at any time you would like to bring back the initial state of the simulation, please select the Reset All button. When you have completed the simulation, please select the Done button to submit. Once the simulation is submitted, please select the Next button to continue.
正解：
解説：
質問 # 72
Which of the following risk management principles is accomplished by purchasing cyber insurance?
- A. Mitigate
- B. Accept
- C. Avoid
- D. Transfer
正解：D
解説：
Transfer is the risk management principle that is accomplished by purchasing cyber insurance.
Transfer is a strategy that involves shifting the risk or its consequences to another party, such as an insurance company, a vendor, or a partner. Transfer does not eliminate the risk, but it reduces the potential impact or liability of the risk for the original party. Cyber insurance is a type of insurance that covers the losses and damages resulting from cyberattacks, such as data breaches, ransomware, denial-of-service attacks, or network disruptions. Cyber insurance can help transfer the risk of cyber incidents by providing financial compensation, legal assistance, or recovery services to the insured party.
質問 # 73
An organization has tracked several incidents that are listed in the following table:
Which of the following is the organization's MTTD?
- A. 0
- B. 1
- C. 2
- D. 3
正解：A
解説：
The MTTD (Mean Time To Detect) is calculated by averaging the time elapsed in detecting incidents. From the given data: (180+150+170+140)/4 = 160 minutes. This is the correct answer according to the CompTIA CySA+ CS0-003 Certification Study Guide1, Chapter 4, page 161. References: CompTIA CySA+ Study Guide: Exam CS0-003, 3rd Edition, Chapter 4, page 153; CompTIA CySA+ CS0-003 Certification Study Guide, Chapter 4, page 161.
質問 # 74
A cybersecurity team has witnessed numerous vulnerability events recently that have affected operating systems. The team decides to implement host-based IPS, firewalls and two-factor authentication. Which of the following does this most likely describe?
- A. Secure access service edge
- B. System hardening
- C. Continuous authorization
- D. Hybrid network architecture
正解：B
解説：
System hardening is the process of securing a system by reducing its attack surface, applying patches and updates, configuring security settings, and implementing security controls. System hardening can help prevent or mitigate vulnerability events that may affect operating systems.
Host-based IPS, firewalls, and two-factor authentication are examples of security controls that can be applied to harden a system.
質問 # 75
Which of the following APT adversary archetypes represent non-nation-state threat actors?
(Select TWO)
- A. Jackal
- B. Spider
- C. Panda
- D. Tiger
- E. Kitten
- F. Bear
正解：A、B
解説：
Definitely Jackal and Spider
https://outlookseries.com/A0781/Security/3511.htm
質問 # 76
While reviewing web server logs, a security analyst found the following line:
<IMG SRC='vbscript:msgbox("test")'>
Which of the following malicious activities was attempted?
- A. XML injection
- B. Command injection
- C. Cross-site scripting
- D. Server-side request forgery
正解：C
質問 # 77
A security analyst is reviewing events that occurred during a possible compromise. The analyst obtains the following log:
Which of the following is most likely occurring, based on the events in the log?
- A. An adversary is performing a password stuffing attack.
. - B. An adversary is attempting to find the shortest path of compromise.
- C. An adversary is performing a vulnerability scan.
- D. An adversary is escalating privileges.
正解：C
解説：
Based on the events in the log, the most likely occurrence is that an adversary is performing a vulnerability scan. The log shows LDAP read operations and EDR enumerating local groups, which are indicative of an adversary scanning the system to find vulnerabilities or sensitive information. The final entry shows SMB connection attempts to multiple hosts from a single host, which could be a sign of network discovery or lateral movement. References: CompTIA CySA+ Study Guide: Exam CS0-003, 3rd Edition, Chapter 4: Security Operations and Monitoring, page 161; Monitor logs from vulnerability scanners, Section: Reports on Nessus vulnerability data.
質問 # 78
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. Legal department
- B. Law enforcement
- C. Help desk
- D. Board member
正解：A
質問 # 79
An organization identifies a method to detect unexpected behavior, crashes, or resource leaks in a system by feeding invalid, unexpected, or random data to stress the application. Which of the following best describes this testing methodology?
- A. Reverse engineering
- B. Fuzzing
- C. Debugging
- D. Static
正解：B
解説：
Fuzzing is a testing technique where invalid or random data is inputted into a system to find vulnerabilities, crashes, or unexpected behaviors. It's commonly used in software security to identify flaws that could lead to security breaches.
質問 # 80
A security analyst must preserve a system hard drive that was involved in a litigation request.
Which of the following is the best method to ensure the data on the device is not modified?
- A. Encrypt the device to ensure confidentiality of the data.
- B. Generate a hash value and make a backup image.
- C. Perform a memory scan dump to collect residual data
- D. Protect the device with a complex password.
正解：B
解説：
Generating a hash value and making a backup image is the best method to ensure the data on the device is not modified, as it creates a verifiable copy of the original data that can be used for forensic analysis. Encrypting the device, protecting it with a password, or performing a memory scan dump do not prevent the data from being altered or deleted.
質問 # 81
A security analyst received an alert regarding multiple successful MFA log-ins for a particular user When reviewing the authentication logs the analyst sees the following:
Which of the following are most likely occurring, based on the MFA logs? (Select two).
- A. Password spray
- B. Rogue access point
- C. Dictionary attack
- D. Push phishing
- E. impossible geo-velocity
- F. Subscriber identity module swapping
正解：D、E
解説：
C: Impossible geo-velocity: This is an event where a single user's account is accessed from different geographical locations within a timeframe that is impossible for normal human travel. In the log, we can see that the user "jdoe" is accessing from the United States and then within a few minutes from Russia, which is practically impossible to achieve without the use of some form of automated system or if the account credentials are being used by different individuals in different locations.
B: Push phishing: This could also be an indication of push phishing, where the user is tricked into approving a multi-factor authentication request that they did not initiate. This is less clear from the logs directly, but it could be inferred if the user is receiving MFA requests that they are not initiating and are being approved without their genuine desire to access the resources.
質問 # 82
An analyst is evaluating a vulnerability management dashboard. The analyst sees that a previously remediated vulnerability has reappeared on a database server. Which of the following is the most likely cause?
- A. A rollback had been executed on the instance.
- B. The vulnerability scanner was configured without credentials.
- C. The vulnerability management software needs to be updated.
- D. The finding is a false positive and should be ignored.
正解：A
解説：
A rollback had been executed on the instance. If a database server is restored to a previous state, it may reintroduce a vulnerability that was previously fixed. This can happen due to backup and recovery operations, configuration changes, or software updates. A rollback can undo the patching or mitigation actions that were applied to remediate the vulnerability.
質問 # 83
A security analyst noticed the following entry on a web server log:
Warning: fopen (http://127.0.0.1:16) : failed to open stream:
Connection refused in /hj/var/www/showimage.php on line 7
Which of the following malicious activities was most likely attempted?
- A. CSRF
- B. RCE
- C. SSRF
- D. XSS
正解：C
解説：
The malicious activity that was most likely attempted is SSRF (Server-Side Request Forgery). This is a type of attack that exploits a vulnerable web application to make requests to other resources on behalf of the web server. In this case, the attacker tried to use the fopen function to access the local loopback address (127.0.0.1) on port 16, which could be a service that is not intended to be exposed to the public. The connection was refused, indicating that the port was closed or filtered. Reference: CompTIA CySA+ Study Guide: Exam CS0-003, 3rd Edition, Chapter 2: Software and Application Security, page 66.
質問 # 84
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CompTIA CS0-003 認定試験の出題範囲：
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CS0-003リアル有効かつ正確な問題集475問題と解答が待ってます：https://www.goshiken.com/CompTIA/CS0-003-mondaishu.html
CS0-003認証と実際の解答があります：https://drive.google.com/open?id=1ByFAjzU-qDMC8gqhxz2hNdELY4b-JQIH