CompTIA CS0-003 Online Practice Questions and Exam Preparation

CompTIA CS0-003 Online Questions & Answers

• Question 461:

  A security analyst is assisting a software engineer with the development of a custom log collection and alerting tool (SIEM) for a proprietary system. The analyst is concerned that the tool will not detect known attacks and behavioral IoCs.

  Which of the following should be configured in order to resolve this issue?

  A. Randomly generate and store all possible file hash values.
  B. Create a default rule to alert on any change to the system.
  C. Integrate with an open-source threat intelligence feed.
  D. Manually add known threat signatures into the tool.
  C. Integrate with an open-source threat intelligence feed.

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  Explanation

  To improve the detection of known attacks and behavioral Indicators of Compromise (IoCs), the best approach is to integrate with an open-source threat intelligence feed. Threat intelligence feeds provide up-to-date information on known malicious IPs, domains, file hashes, and behavioral patterns that attackers use.

  Option A (randomly generating and storing hash values) is impractical, as there are an infinite number of possible files.

  Option B (alerting on any system change) would lead to excessive noise and false positives, making the system difficult to manage.

  Option D (manually adding signatures) is useful but is not scalable or as timely as an external intelligence feed.

  Thus, the correct answer is C, as integrating an open-source threat intelligence feed enhances the SIEM's ability to detect and respond to real-world threats.

• Question 462:

  A security manager is looking at a third-party vulnerability metric (SMITTEN) to improve upon the company's current method that relies on CVSSv3. Given the following:

  

  Which of the following vulnerabilities should be prioritized?

  A. Vulnerability 1
  B. Vulnerability 2
  C. Vulnerability 3
  D. Vulnerability 4
  B. Vulnerability 2

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  Explanation

  Vulnerability 2 should be prioritized as it is exploitable, has high exploit activity, and is exposed externally according to the SMITTEN metric.

  References:

  Vulnerability Management Metrics: 5 Metrics to Start Measuring in Your Program, Section: Vulnerability Severity.

• Question 463:

  A penetration tester is conducting a test on an organization's software development website. The penetration tester sends the following request to the web interface:

  

  Which of the following exploits is most likely being attempted?

  A. SQL injection
  B. Local file inclusion
  C. Cross-site scripting
  D. Directory traversal
  A. SQL injection

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  Explanation

  SQL injection is a type of attack that injects malicious SQL statements into a web application's input fields or parameters, in order to manipulate or access the underlying database. The request shown in the image contains an SQL injection attempt, as indicated by the "UNION SELECT" statement, which is used to combine the results of two or more queries. The attacker is trying to extract information from the database by appending the malicious query to the original one

• Question 464:

  A security analyst is assessing the security of a cloud environment.

  The following output is generated when the assessment runs: Authentication error - Instance not found on preset location Which of the following should the analyst use to fix the issue?

  A. run module_name and exec
  B. session and --module-args=" "
  C. set_regions and set_key
  D. whoami and --data
  C. set_regions and set_key

• Question 465:

  A SOC manager is looking for a solution that can improve the response time and execute predetermined instructions.

  Which of the following is the best solution based on these requirements?

  A. XDR
  B. SIEM
  C. CASB
  D. SOAR
  D. SOAR

• Question 466:

  A Chief Information Security Officer wants to map all the attack vectors that the company faces each day.

  Which of the following recommendations should the company align their security controls around?

  A. OSSTMM
  B. Diamond Model of Intrusion Analysis
  C. OWASP
  D. MITRE ATT&CK
  D. MITRE ATT&CK

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  Explanation

  The MITRE ATT&CK (Adversarial Tactics, Techniques, and Common Knowledge) framework is a comprehensive knowledge base that provides detailed information about various attack techniques and tactics employed by adversaries. It categorizes and describes different attack vectors, tactics, and techniques used in real-world cyberattacks. Organizations can use the MITRE ATT&CK framework to understand the threats they face, map security controls to specific attack techniques, and develop effective defensive strategies.

• Question 467:

  Given the output below:

  #nmap 7.70 scan initiated Tues, Feb 8 12:34:56 2022 as: nmap -v -Pn -p 80,8000,443 --script http-* -oA server.out 192.168.220.42

  Which of the following is being performed?

  A. Cross-site scripting
  B. Local file inclusion attack
  C. Log4] check
  D. Web server enumeration
  D. Web server enumeration

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  Explanation

  Web server enumeration is the process of identifying information about a web server, such as its software version, operating system, configuration, services, and vulnerabilities. This can be done using tools like Nmap, which can scan ports and run scripts to gather information. In this question, the Nmap command is using the -p option to scan ports 80, 8000, and 443, which are commonly used for web services. It is also using the --script option to run scripts that start with http-*, which are related to web server enumeration. The output file name server.out also suggests that the purpose of the scan is to enumerate web servers. CompTIA Cybersecurity Analyst (CySA+) Certification Exam Objectives (CS0-002), page 8;

  https://partners.comptia.org/docs/defaultsource/resources/comptia-cysa-cs0-002-exam-objectives

• Question 468:

  Given the Nmap request below:

  

  Which of the following actions will an attacker be able to initiate directly against this host?

  A. Password sniffing
  B. ARP spoofing
  C. A brute-force attack
  D. An SQL injection
  C. A brute-force attack

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  Explanation

  The Nmap command given in the question performs a TCP SYN scan (-sS), a service version detection scan (-sV), an OS detection scan (-O), and a port scan for ports 1-1024 (-p 1-1024) on the host 192.168.1.1. This command will reveal information about the hos" and running services, which can be used by an attacker to launch a brute-force attack against the host. A brute-force attack is a method of guessing passwords or encryption keys by trying many possible combinations until finding the correct one. An attacker can use the information from the Nmap scan to target specific services or protocols that may have weak or default credentials, such as FTP, SSH, Telnet, or HTTP.

• Question 469:

  An analyst is imaging a hard drive that was obtained from the system of an employee who is suspected of going rogue. The analyst notes that the initial hash of the evidence drive does not match the resultant hash of the imaged copy.

  Which of the following best describes the reason for the conflicting investigative findings?

  A. Chain of custody was not maintained for the evidence drive.
  B. Legal authorization was not obtained prior to seizing the evidence drive.
  C. Data integrity of the imaged drive could not be verified.
  D. Evidence drive imaging was performed without a write blocker.
  D. Evidence drive imaging was performed without a write blocker.

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  Explanation

  In digital forensics, a write blocker is a critical tool used to prevent any modifications to the source drive during imaging. When a forensic image is created, it should be an exact bit-for-bit copy of the original evidence. If a write blocker is not used, system processes or other unintended changes can alter the contents of the drive, leading to a hash mismatch between the original and the image copy. Chain of custody (Option A) ensures proper documentation of who accessed the evidence, but it does not directly affect the hash values. Legal authorization (Option B) is necessary but unrelated to the technical integrity of the image. Data integrity verification (Option C) is part of the process, but in this scenario, the failure to maintain integrity stems from the lack of a write blocker. Thus, the correct answer is D, as using a write blocker would have prevented any unintended changes to the data.

• Question 470:

  An organization is conducting a pilot deployment of an e-commerce application. The application's source code is not available.

  Which of the following strategies should an analyst recommend to evaluate the security of the software?

  A. Static testing
  B. Vulnerability testing
  C. Dynamic testing
  D. Penetration testing
  D. Penetration testing

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  Explanation

  Penetration testing is the best strategy to evaluate the security of the software without the source code. Penetration testing is a type of security testing that simulates real-world attacks on the software to identify and exploit its vulnerabilities.

  Penetration testing can be performed on the software as a black box, meaning that the tester does not need to have access to the source code or the internal structure of the software. Penetration testing can help the analyst to assess the security posture of the software, the potential impact of the vulnerabilities, and the effectiveness of the existing security controls 12. Static testing, vulnerability testing, and dynamic testing are other types of security testing, but they usually require access to the source code or the internal structure of the software. Static testing is the analysis of the software code or design without executing it. Vulnerability testing is the identification and evaluation of the software weaknesses or flaws. Dynamic testing is the analysis of the software code or design while executing it345.

  References:

  Penetration Testing - OWASP, What is a Penetration Test and How Does It Work?, Static Code Analysis | OWASP Foundation,

  Vulnerability Scanning Best Practices, Dynamic Testing - OWASP