CompTIA CS0-003 Online Practice Questions and Exam Preparation

CompTIA CS0-003 Online Questions & Answers

• Question 651:

  The steering committee for information security management annually reviews the security incident register for the organization to look for trends and systematic issues. The steering committee wants to rank the risks based on past incidents to improve the security program for next year. Below is the incident register for the organization:

  

  Which of the following should the organization consider investing in first due to the potential impact of availability?

  A. Hire a managed service provider to help with vulnerability management.
  B. Build a warm site in case of system outages.
  C. Invest in a failover and redundant system, as necessary.
  D. Hire additional staff for the IT department to assist with vulnerability management and log review.
  C. Invest in a failover and redundant system, as necessary.

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  Explanation

  Investing in a failover and redundant system, as necessary, is the best solution to improve the availability of the organiza"dents. A failover system is a backup system that automatically takes over the operation of a primary system in case of a failure or outage. A redundant system is a duplicate system that runs simultaneously with the primary system and provides backup functionality if needed. Investing in a failover and redundant system can help to "ystems are always available and can handle the workload without interruption or degradation .

• Question 652:

  A security analyst needs to automate the incident response process for malware infections. When the following logs are generated, an alert email should automatically be sent within 30 minutes:

  

  Which of the following is the best way for the analyst to automate alert generation?

  A. Deploy a signature-based IDS
  B. Install a UEBA-capable antivirus
  C. Implement email protection with SPF
  D. Create a custom rule on a SIEM
  D. Create a custom rule on a SIEM

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  Explanation

  A security information and event management (SIEM) system is a tool that collects and analyzes log data from various sources and provides alerts and reports on security incidents and events. A security analyst can create a custom rule on a SIEM system to automate the incident response process for malware infections. For example, the analyst can create a rule that triggers an alert email when the SIEM system detects logs that match the criteria of malware infection, such as process name, file name, file hash, etc. The alert email can be sent within 30 minutes or any other desired time frame. The other options are not suitable or sufficient for this purpose. CompTIA Cybersecurity Analyst (CySA+) Certification Exam Objectives (CS0-002), page 15;

  https://www.sans.org/reading-room/whitepapers/analyst/security-information-event-managementsiem-implementation-33969

• Question 653:

  Which of the following is an important aspect that should be included in the lessons-learned step after an incident?

  A. Identify any improvements or changes in the incident response plan or procedures
  B. Determine if an internal mistake was made and who did it so they do not repeat the error
  C. Present all legal evidence collected and turn it over to iaw enforcement
  D. Discuss the financial impact of the incident to determine if security controls are well spent
  A. Identify any improvements or changes in the incident response plan or procedures

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  Explanation

  An important aspect that should be included in the lessons-learned step after an incident is to identify any improvements or changes in the incident response plan or procedures. The lessonslearned step is a process that involves reviewing and evaluating the incident response activities and outcomes, as well as identifying and documenting any strengths, weaknesses, gaps, or best practices. Identifying any improvements or changes in the incident response plan or procedures can help enhance the security posture, readiness, or capability of the organization for future incidents

• Question 654:

  Which of the following is the best use of automation in cybersecurity?

  A. Ensure faster incident detection, analysis, and response.
  B. Eliminate configuration errors when implementing new hardware.
  C. Lower costs by reducing the number of necessary staff.
  D. Reduce the time for internal user access requests.
  A. Ensure faster incident detection, analysis, and response.

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  Explanation

  Comprehensive and Detailed Step-by-Step Explanation:Automation in cybersecurity is best utilized to improve the speed and accuracy of incident detection, analysis, and response. Tools like SOAR (Security Orchestration, Automation, and Response) streamline workflows, allowing analysts to focus on more complex tasks while reducing response times. This ensures quicker containment and mitigation of threats.

  References:

  CompTIA CySA+ Study Guide (Chapter 1: Cybersecurity Automation, Page 28) CompTIA CySA+ Practice Tests (Domain 1.3 Tools for Malicious Activity, Page 13)

• Question 655:

  A security analyst reviews the following output:

  

  Which of the following malicious activities is occurring?

  A. ARP poisoning
  B. MAC flooding
  C. ARP spoofing
  D. ARP scanning
  D. ARP scanning

• Question 656:

  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: K/A: L
  B. CVSS:31/AV:K/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
  A. CVSS: 31/AV: N/AC: L/PR: N/UI: N/S: U/C: H: K/A: L

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  Explanation

  This answer matches the description of the zero-day threat. The attack vector is network (AV:N), the attack complexity is low (AC:L), no privileges are required (PR:N), no user interaction is required (UI:N), the scope is unchanged (S:U), the confidentiality and integrity impacts are high (C:H/I:H), and the availability impact is low (A:L). Official

  https://nvd.nist.gov/vuln-metrics/cvss

• Question 657:

  During an incident, some loCs of possible ransomware contamination were found in a group of servers in a segment of the network.

  Which of the following steps should be taken next?

  A. Isolation
  B. Remediation
  C. Reimaging
  D. Preservation
  A. Isolation

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  Explanation

  Isolation is the first step to take after detecting some indicators of compromise (IoCs) of possible ransomware contamination. Isolation prevents the ransomware from spreading to other servers or segments of the network, and allows the security team to investigate and contain the incident. Isolation can be done by disconnecting the infected servers from the network, blocking the malicious traffic, or applying firewall rules.

• Question 658:

  A WAF weekly report shows that a daily spike occurs from the same subnet. An open-source review indicates the IP addresses belong to a legitimate internet service provider but have been flagged for DDoS attacks and reconnaissance scanning in the past year.

  Which of the following actions should a SOC analyst take first in response to these traffic uptick activities?

  A. Recommend a firewall rule implementation to deny all traffic from the IP subnet.
  B. Continue monitoring because the traffic spike did not cause any security notifications or concerns.
  C. Review the network logs to identify the context of traffic and what action was taken.
  D. Check the resource consumption levels to determine whether the uptick is due to a device performance issue.
  C. Review the network logs to identify the context of traffic and what action was taken.

• Question 659:

  After running the cat file01.bin | hexdump -C command, a security analyst reviews the following output snippet:

  

  Which of the following digital-forensics techniques is the analyst using?

  A. Reviewing the file hash
  B. Debugging the binary file
  C. Implementing file carving
  D. Verifying the file type
  E. Utilizing reverse engineering
  D. Verifying the file type

• Question 660:

  The Chief Information Security Officer wants to eliminate and reduce shadow IT in the enterprise. Several high-risk cloud applications are used that increase the risk to the organization.

  Which of the following solutions will assist in reducing the risk?

  A. Deploy a CASB and enable policy enforcement
  B. Configure MFA with strict access
  C. Deploy an API gateway
  D. Enable SSO to the cloud applications
  A. Deploy a CASB and enable policy enforcement

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  Explanation

  A cloud access security broker (CASB) is a tool that can help reduce the risk of shadow IT in the enterprise by providing visibility and control over cloud applications and services. A CASB can enable policy enforcement by blocking unauthorized or risky cloud applications, enforcing data loss prevention rules, encrypting sensitive data, and detecting anomalous user behavior.