2024年最新の実際のCAS-005問題集最新CompTIA練習テスト問題集ゲット [Q39-Q62]

2024年最新の実際のCAS-005問題集最新CompTIA練習テスト問題集ゲット

CAS-005問題集PDFでCAS-005リアル試験問題解答

質問 # 39
You are tasked with integrating a new B2B client application with an existing OAuth workflow that must meet the following requirements:
. The application does not need to know the users' credentials.
. An approval interaction between the users and the HTTP service must be orchestrated.
. The application must have limited access to users' data.
INSTRUCTIONS
Use the drop-down menus to select the action items for the appropriate locations. All placeholders must be filled.

正解：

解説：
See the complete solution below in Explanation:
Explanation:
Select the Action Items for the Appropriate Locations:
* Authorization Server:
* Action Item: Grant access
* Explanation: The authorization server's role is to authenticate the user and then issue an authorization code or token that the client application can use to access resources. Granting access involves the server authenticating the resource owner and providing the necessary tokens for the client application.
* Resource Server:
* Action Item: Access issued tokens
* Explanation: The resource server is responsible for serving the resources requested by the client application. It must verify the issued tokens from the authorization server to ensure the client has the right permissions to access the requested data.
* B2B Client Application:
* Action Item: Authorize access to other applications
* Explanation: The B2B client application must handle the OAuth flow to authorize access on behalf of the user without requiring direct knowledge of the user's credentials. This includes obtaining authorization tokens from the authorization server and using them to request access to the resource server.
Detailed Explanation:
OAuth 2.0 is designed to provide specific authorization flows for web applications, desktop applications, mobile phones, and living room devices. The integration involves multiple steps and components, including:
* Resource Owner (User):
* The user owns the data and resources that are being accessed.
* Client Application (B2B Client Application):
* Requests access to the resources controlled by the resource owner but does not directly handle the user's credentials. Instead, it uses tokens obtained through the OAuth flow.
* Authorization Server:
* Handles the authentication of the resource owner and issues the access tokens to the client application upon successful authentication.
* Resource Server:
* Hosts the resources that the client application wants to access. It verifies the access tokens issued by the authorization server before granting access to the resources.
OAuth Workflow:
* The resource owner accesses the client application.
* The client application redirects the resource owner to the authorization server for authentication.
* The authorization server authenticates the resource owner and asks for consent to grant access to the client application.
* Upon consent, the authorization server issues an authorization code or token to the client application.
* The client application uses the authorization code or token to request access to the resources from the resource server.
* The resource server verifies the token with the authorization server and, if valid, grants access to the requested resources.
References:
* CompTIA Security+ Study Guide: Provides comprehensive information on various authentication and authorization protocols, including OAuth.
* OAuth 2.0 Authorization Framework (RFC 6749): The official documentation detailing the OAuth
2.0 framework, its flows, and components.
* OAuth 2.0 Simplified: A book by Aaron Parecki that provides a detailed yet easy-to-understand explanation of the OAuth 2.0 protocol.
By ensuring that each component in the OAuth workflow performs its designated role, the B2B client application can securely access the necessary resources without compromising user credentials, adhering to the principle of least privilege.

質問 # 40
A company that uses containers to run its applications is required to identify vulnerabilities on every container image in a private repository The security team needs to be able to quickly evaluate whether to respond to a given vulnerability Which of the following, will allow the security team to achieve the objective with the last effort?

• A. Credentialed vulnerability scan
• B. Centralized SBoM
• C. CIS benchmark compliance reports
• D. SAST scan reports

正解：B

解説：
A centralized Software Bill of Materials (SBoM) is the best solution for identifying vulnerabilities in container images in a private repository. An SBoM provides a comprehensive inventory of all components, dependencies, and their versions within a container image, facilitating quick evaluation and response to vulnerabilities.
Why Centralized SBoM?
* Comprehensive Inventory: An SBoM lists all software components, including their versions and dependencies, allowing for thorough vulnerability assessments.
* Quick Identification: Centralizing SBoM data enables rapid identification of affected containers when a vulnerability is disclosed.
* Automation: SBoMs can be integrated into automated tools for continuous monitoring and alerting of vulnerabilities.
* Regulatory Compliance: Helps in meeting compliance requirements by providing a clear and auditable record of all software components used.
Other options, while useful, do not provide the same level of comprehensive and efficient vulnerability management:
* A. SAST scan reports: Focuses on static analysis of code but may not cover all components in container images.
* C. CIS benchmark compliance reports: Ensures compliance with security benchmarks but does not provide detailed component inventory.
* D. Credentialed vulnerability scan: Useful for in-depth scans but may not be as efficient for quick vulnerability evaluation.
References:
* CompTIA SecurityX Study Guide
* "Software Bill of Materials (SBoM)," NIST Documentation
* "Managing Container Security with SBoM," OWASP

質問 # 41
While reviewing recent modem reports, a security officer discovers that several employees were contacted by the same individual who impersonated a recruiter. Which of the following best describes this type of correlation?

• A. Spear-phishing campaign
• B. Threat modeling
• C. Attack pattern analysis
• D. Red team assessment

正解：A

解説：
The situation where several employees were contacted by the same individual impersonating a recruiter best describes a spear-phishing campaign. Here's why:
* Targeted Approach: Spear-phishing involves targeting specific individuals within an organization with personalized and convincing messages to trick them into divulging sensitive information or performing actions that compromise security.
* Impersonation: The use of impersonation, in this case, a recruiter, is a common tactic in spear-phishing to gain the trust of the targeted individuals and increase the likelihood of a successful attack.
* Correlated Contacts: The fact that several employees were contacted by the same individual suggests a coordinated effort to breach the organization's security by targeting multiple points of entry through social engineering.
* References:
* CompTIA Security+ SY0-601 Study Guide by Mike Chapple and David Seidl
* NIST Special Publication 800-61: Computer Security Incident Handling Guide
* OWASP Phishing Cheat Sheet

質問 # 42
A software development team requires valid data for internal tests. Company regulations, however do not allow the use of this data in cleartext. Which of the following solutions best meet these requirements?

• A. Configuring data hashing
• B. Replacing data with null record
• C. Implementing data obfuscation
• D. Deploying tokenization

正解：D

解説：
Tokenization replaces sensitive data elements with non-sensitive equivalents, called tokens, that can be used within the internal tests. The original data is stored securely and can be retrieved if necessary. This approach allows the software development team to work with data that appears realistic and valid without exposing the actual sensitive information.
Configuring data hashing (Option A) is not suitable for test data as it transforms the data into a fixed-length value that is not usable in the same way as the original data. Replacing data with null records (Option C) is not useful as it does not provide valid data for testing. Data obfuscation (Option D) could be an alternative but might not meet the regulatory requirements as effectively as tokenization.
References:
* CompTIA Security+ Study Guide
* NIST SP 800-57 Part 1 Rev. 5, "Recommendation for Key Management"
* PCI DSS Tokenization Guidelines

質問 # 43
During the course of normal SOC operations, three anomalous events occurred and were flagged as potential IoCs. Evidence for each of these potential IoCs is provided.
INSTRUCTIONS
Review each of the events and select the appropriate analysis and remediation options for each IoC.

正解：

解説：
See the complete solution below in Explanation:
Explanation:
Analysis and Remediation Options for Each IoC:
IoC 1:
* Evidence:
* Source: Apache_httpd
* Type: DNSQ
* Dest: @10.1.1.1:53, @10.1.2.5
* Data: update.s.domain, CNAME 3a129sk219r9slmfkzzz000.s.domain, 108.158.253.253
* Analysis:
* Analysis: The service is attempting to resolve a malicious domain.
* Reason: The DNS queries and the nature of the CNAME resolution indicate that the service is trying to resolve potentially harmful domains, which is a common tactic used by malware to connect to command-and-control servers.
* Remediation:
* Remediation: Implement a blocklist for known malicious ports.
* Reason: Blocking known malicious domains at the DNS level prevents the resolution of harmful domains, thereby protecting the network from potential connections to malicious servers.
IoC 2:
* Evidence:
* Src: 10.0.5.5
* Dst: 10.1.2.1, 10.1.2.2, 10.1.2.3, 10.1.2.4, 10.1.2.5
* Proto: IP_ICMP
* Data: ECHO
* Action: Drop
* Analysis:
* Analysis: Someone is footprinting a network subnet.
* Reason: The repeated ICMP ECHO requests to different addresses within a subnet indicate that someone is scanning the network to discover active hosts, a common reconnaissance technique used by attackers.
* Remediation:
* Remediation: Block ping requests across the WAN interface.
* Reason: Blocking ICMP ECHO requests on the WAN interface can prevent attackers from using ping sweeps to gather information about the network topology and active devices.
IoC 3:
* Evidence:
* Proxylog:
* GET
/announce?info_hash=%01dff%27f%21%10%c5%wp%4e%1d%6f%63%3c%49%6d&peer_i
* Uploaded=0&downloaded=0&left=3767869&compact=1&ip=10.5.1.26&event=started
* User-Agent: RAZA 2.1.0.0
* Host: localhost
* Connection: Keep-Alive
* HTTP 200 OK
* Analysis:
* Analysis: An employee is using P2P services to download files.
* Reason: The HTTP GET request with parameters related to a BitTorrent client indicates that the employee is using peer-to-peer (P2P) services, which can lead to unauthorized data transfer and potential security risks.
* Remediation:
* Remediation: Enforce endpoint controls on third-party software installations.
* Reason: By enforcing strict endpoint controls, you can prevent the installation and use of unauthorized software, such as P2P clients, thereby mitigating the risk of data leaks and other security threats associated with such applications.
References:
* CompTIA Security+ Study Guide: This guide offers detailed explanations on identifying and mitigating various types of Indicators of Compromise (IoCs) and the corresponding analysis and remediation strategies.
* CompTIA Security+ Exam Objectives: These objectives cover key concepts in network security monitoring and incident response, providing guidelines on how to handle different types of security
* events.
* Security Operations Center (SOC) Best Practices: This resource outlines effective strategies for analyzing and responding to anomalous events within a SOC, including the use of blocklists, endpoint controls, and network configuration changes.
By accurately analyzing the nature of each IoC and applying the appropriate remediation measures, the organization can effectively mitigate potential security threats and maintain a robust security posture.

質問 # 44
After an incident response exercise, a security administrator reviews the following table:

Which of the following should the administrator do to beat support rapid incident response in the future?

• A. Enable dashboards for service status monitoring
• B. Send emails for failed log-In attempts on the public website
• C. Automate alerting to IT support for phone system outages.
• D. Configure automated Isolation of human resources systems

正解：A

解説：
Enabling dashboards for service status monitoring is the best action to support rapid incident response. The table shows various services with different risk, criticality, and alert severity ratings. To ensure timely and effective incident response, real-time visibility into the status of these services is crucial.
Why Dashboards for Service Status Monitoring?
* Real-time Visibility: Dashboards provide an at-a-glance view of the current status of all critical services, enabling rapid detection of issues.
* Centralized Monitoring: A single platform to monitor the status of multiple services helps streamline incident response efforts.
* Proactive Alerting: Dashboards can be configured to show alerts and anomalies immediately, ensuring that incidents are addressed as soon as they arise.
* Improved Decision Making: Real-time data helps incident response teams make informed decisions quickly, reducing downtime and mitigating impact.
Other options, while useful, do not offer the same level of comprehensive, real-time visibility and proactive alerting:
* A. Automate alerting to IT support for phone system outages: This addresses one service but does not provide a holistic view.
* C. Send emails for failed log-in attempts on the public website: This is a specific alert for one type of issue and does not cover all services.
* D. Configure automated isolation of human resources systems: This is a reactive measure for a
* specific service and does not provide real-time status monitoring.
References:
* CompTIA SecurityX Study Guide
* NIST Special Publication 800-61 Revision 2, "Computer Security Incident Handling Guide"
* "Best Practices for Implementing Dashboards," Gartner Research

質問 # 45
After some employees were caught uploading data to online personal storage accounts, a company becomes concerned about data leaks related to sensitive, internal documentation. Which of the following would the company most likely do to decrease this type of risk?

• A. Create SIEM rules to raise alerts for access to those platforms
• B. Implement a cloud-access security broker
• C. Deploy an internet proxy that filters certain domains
• D. Improve firewall rules to avoid access to those platforms.

正解：B

解説：
A Cloud Access Security Broker (CASB) is a security policy enforcement point placed between cloud service consumers and cloud service providers to combine and interject enterprise security policies as cloud-based resources are accessed. Implementing a CASB provides several benefits:
* A. Improve firewall rules to avoid access to those platforms: This can help but is not as effective or comprehensive as a CASB.
* B. Implement a cloud-access security broker: A CASB can provide visibility into cloud application usage, enforce data security policies, and protect against data leaks by monitoring and controlling access to cloud services. It also provides advanced features like data encryption, data loss prevention (DLP), and compliance monitoring.
* C. Create SIEM rules to raise alerts for access to those platforms: This helps in monitoring but does not prevent data leaks.
* D. Deploy an internet proxy that filters certain domains: This can block access to specific sites but lacks the granular control and visibility provided by a CASB.
Implementing a CASB is the most comprehensive solution to decrease the risk of data leaks by providing visibility, control, and enforcement of security policies for cloud services.
References:
* CompTIA Security+ Study Guide
* Gartner, "Magic Quadrant for Cloud Access Security Brokers"
* NIST SP 800-144, "Guidelines on Security and Privacy in Public Cloud Computing"

質問 # 46
An organization is planning for disaster recovery and continuity of operations, and has noted the following relevant findings:
1. A natural disaster may disrupt operations at Site A, which would then cause an evacuation. Users are unable to log into the domain from-their workstations after relocating to Site B.
2. A natural disaster may disrupt operations at Site A, which would then cause the pump room at Site B to become inoperable.
3. A natural disaster may disrupt operations at Site A, which would then cause unreliable internet connectivity at Site B due to route flapping.
INSTRUCTIONS
Match each relevant finding to the affected host by clicking on the host name and selecting the appropriate number.
For findings 1 and 2, select the items that should be replicated to Site B. For finding 3, select the item requiring configuration changes, then select the appropriate corrective action from the drop-down menu.

正解：

解説：
See the complete solution below in Explanation:
Explanation:
Matching Relevant Findings to the Affected Hosts:
* Finding 1:
* Affected Host: DNS
* Reason: Users are unable to log into the domain from their workstations after relocating to Site B, which implies a failure in domain name services that are critical for user authentication and domain login.
* Finding 2:
* Affected Host: Pumps
* Reason: The pump room at Site B becoming inoperable directly points to the critical infrastructure components associated with pumping operations.
* Finding 3:
* Affected Host: VPN Concentrator
* Reason: Unreliable internet connectivity at Site B due to route flapping indicates issues with network routing, which is often managed by VPN concentrators that handle site-to-site
* connectivity.
Corrective Actions for Finding 3:
* Finding 3 Corrective Action:
* Action: Modify the BGP configuration
* Reason: Route flapping is often related to issues with Border Gateway Protocol (BGP) configurations. Adjusting BGP settings can stabilize routes and improve internet connectivity reliability.
* Replication to Site B for Finding 1:
* Affected Host: DNS
* Explanation: Domain Name System (DNS) services are essential for translating domain names into IP addresses, allowing users to log into the network. Replicating DNS services ensures that even if Site A is disrupted, users at Site B can still authenticate and access necessary resources.
* Replication to Site B for Finding 2:
* Affected Host: Pumps
* Explanation: The operation of the pump room is crucial for maintaining various functions within the infrastructure. Replicating the control systems and configurations for the pumps at Site B ensures that operations can continue smoothly even if Site A is affected.
* Configuration Changes for Finding 3:
* Affected Host: VPN Concentrator
* Explanation: Route flapping is a situation where routes become unstable, causing frequent changes in the best path for data to travel. This instability can be mitigated by modifying BGP configurations to ensure more stable routing. VPN concentrators, which manage connections between sites, are typically configured with BGP for optimal routing.
References:
* CompTIA Security+ Study Guide: This guide provides detailed information on disaster recovery and continuity of operations, emphasizing the importance of replicating critical services and making necessary configuration changes to ensure seamless operation during disruptions.
* CompTIA Security+ Exam Objectives: These objectives highlight key areas in disaster recovery planning, including the replication of critical services and network configuration adjustments.
* Disaster Recovery and Business Continuity Planning (DRBCP): This resource outlines best practices for ensuring that operations can continue at an alternate site during a disaster, including the replication of essential services and network stability measures.
By ensuring that critical services like DNS and control systems for pumps are replicated at the alternate site, and by addressing network routing issues through proper BGP configuration, the organization can maintain operational continuity and minimize the impact of natural disasters on their operations.

質問 # 47
During a gap assessment, an organization notes that OYOD usage is a significant risk. The organization implemented administrative policies prohibiting BYOD usage However, the organization has not implemented technical controls to prevent the unauthorized use of BYOD assets when accessing the organization's resources. Which of the following solutions should the organization implement to best reduce the risk of OYOD devices? (Select two).

• A. Conditional access, to enforce user-to-device binding
• B. SD-WAN. to enforce web content filtering through external proxies
• C. NAC, to enforce device configuration requirements
• D. PAM. to enforce local password policies
• E. Cloud 1AM to enforce the use of token based MFA
• F. DLP, to enforce data protection capabilities

正解：A、C

解説：
To reduce the risk of unauthorized BYOD (Bring Your Own Device) usage, the organization should implement Conditional Access and Network Access Control (NAC).
Why Conditional Access and NAC?
* Conditional Access:
* User-to-Device Binding: Conditional access policies can enforce that only registered and compliant devices are allowed to access corporate resources.
* Context-Aware Security: Enforces access controls based on the context of the access attempt, such as user identity, device compliance, location, and more.
* Network Access Control (NAC):
* Device Configuration Requirements: NAC ensures that only devices meeting specific security configurations are allowed to connect to the network.
* Access Control: Provides granular control over network access, ensuring that BYOD devices comply with security policies before gaining access.
Other options, while useful, do not address the specific need to control and secure BYOD devices effectively:
* A. Cloud IAM to enforce token-based MFA: Enhances authentication security but does not control device compliance.
* D. PAM to enforce local password policies: Focuses on privileged account management, not BYOD control.
* E. SD-WAN to enforce web content filtering: Enhances network performance and security but does not enforce BYOD device compliance.
* F. DLP to enforce data protection capabilities: Protects data but does not control BYOD device access and compliance.
References:
* CompTIA SecurityX Study Guide
* "Conditional Access Policies," Microsoft Documentation
* "Network Access Control (NAC)," Cisco Documentation

質問 # 48
Company A acquired Company B and needs to determine how the acquisition will impact the attack surface of the organization as a whole. Which of the following is the best way to achieve this goal? (Select two).
Implementing DLP controls preventing sensitive data from leaving Company B's network

• A. Performing an architectural review of Company B's network
• B. Documenting third-party connections used by Company B
• C. Reviewing the privacy policies currently adopted by Company B
• D. Forcing a password reset requiring more stringent passwords for users on Company B's network
• E. Requiring data sensitivity labeling tor all files shared with Company B

正解：B、C

解説：
To determine how the acquisition of Company B will impact the attack surface, the following steps are crucial:
A: Documenting third-party connections used by Company B: Understanding all external connections is essential for assessing potential entry points for attackers and ensuring that these connections are secure.
E: Performing an architectural review of Company B's network: This review will identify vulnerabilities and assess the security posture of the acquired company's network, providing a comprehensive understanding of the new attack surface.
These actions will provide a clear picture of the security implications of the acquisition and help in developing a plan to mitigate any identified risks.
References:
* CompTIA SecurityX Study Guide: Emphasizes the importance of understanding third-party connections and conducting architectural reviews during acquisitions.
* NIST Special Publication 800-37, "Guide for Applying the Risk Management Framework to Federal Information Systems": Recommends comprehensive reviews and documentation of third-party connections.
* "Mergers, Acquisitions, and Other Restructuring Activities" by Donald DePamphilis: Discusses the importance of security assessments during acquisitions.

質問 # 49
A security analyst received a notification from a cloud service provider regarding an attack detected on a web server The cloud service provider shared the following information about the attack:
* The attack came from inside the network.
* The attacking source IP was from the internal vulnerability scanners.
* The scanner is not configured to target the cloud servers.
Which of the following actions should the security analyst take first?

• A. Configure the scan policy to avoid targeting an out-of-scope host
• B. Quarantine the scanner sensor to perform a forensic analysis
• C. Create an allow list for the vulnerability scanner IPs m order to avoid false positives
• D. Set network behavior analysis rules

正解：B

解説：
When a security analyst receives a notification about an attack that appears to originate from an internal vulnerability scanner, it suggests that the scanner itself might have been compromised. This situation is critical because a compromised scanner can potentially conduct unauthorized scans, leak sensitive information, or execute malicious actions within the network. The appropriate first action involves containing the threat to prevent further damage and allow for a thorough investigation.
Here's why quarantining the scanner sensor is the best immediate action:
* Containment and Isolation: Quarantining the scanner will immediately prevent it from continuing any malicious activity or scans. This containment is crucial to protect the rest of the network from potential harm.
* Forensic Analysis: By isolating the scanner, a forensic analysis can be performed to understand how it was compromised, what actions it took, and what data or systems might have been affected. This analysis will provide valuable insights into the nature of the attack and help in taking appropriate remedial actions.
* Preventing Further Attacks: If the scanner is allowed to continue operating, it might execute more unauthorized actions, leading to greater damage. Quarantine ensures that the threat is neutralized promptly.
* Root Cause Identification: A forensic analysis can help identify vulnerabilities in the scanner's configuration, software, or underlying system that allowed the compromise. This information is essential for preventing future incidents.
Other options, while potentially useful in the long term, are not appropriate as immediate actions in this scenario:
* A. Create an allow list for the vulnerability scanner IPs to avoid false positives: This action addresses false positives but does not mitigate the immediate threat posed by the compromised scanner.
* B. Configure the scan policy to avoid targeting an out-of-scope host: This step is preventive for future scans but does not deal with the current incident where the scanner is already compromised.
* C. Set network behavior analysis rules: While useful for ongoing monitoring and detection, this does not address the immediate need to stop the compromised scanner's activities.
In conclusion, the first and most crucial action is to quarantine the scanner sensor to halt any malicious activity and perform a forensic analysis to understand the scope and nature of the compromise. This step ensures that the threat is contained and provides a basis for further remediation efforts.
References:
* CompTIA SecurityX Study Guide
* NIST Special Publication 800-61 Revision 2, "Computer Security Incident Handling Guide"

質問 # 50
A company receives several complaints from customers regarding its website. An engineer implements a parser for the web server logs that generates the following output:

which of the following should the company implement to best resolve the issue?

• A. IDS
• B. CDN
• C. WAF
• D. NAC

正解：B

解説：
The table indicates varying load times for users accessing the website from different geographic locations.
Customers from Australia and India are experiencing significantly higher load times compared to those from the United States. This suggests that latency and geographical distance are affecting the website's performance.
* A. IDS (Intrusion Detection System): While an IDS is useful for detecting malicious activities, it does not address performance issues related to latency and geographical distribution of content.
* B. CDN (Content Delivery Network): A CDN stores copies of the website's content in multiple geographic locations. By serving content from the nearest server to the user, a CDN can significantly reduce load times and improve user experience globally.
* C. WAF (Web Application Firewall): A WAF protects web applications by filtering and monitoring HTTP traffic but does not improve performance related to geographical latency.
* D. NAC (Network Access Control): NAC solutions control access to network resources but are not designed to address web performance issues.
Implementing a CDN is the best solution to resolve the performance issues observed in the log output.
References:
* CompTIA Security+ Study Guide
* "CDN: Content Delivery Networks Explained" by Akamai Technologies
* NIST SP 800-44, "Guidelines on Securing Public Web Servers"

質問 # 51
A company wants to implement hardware security key authentication for accessing sensitive information systems The goal is to prevent unauthorized users from gaining access with a stolen password Which of the following models should the company implement to best solve this issue?

• A. Time-based
• B. Role based
• C. Context-based
• D. Rule based

正解：C

解説：
Context-based authentication enhances traditional security methods by incorporating additional layers of information about the user's current environment and behavior. This can include factors such as the user's location, the time of access, the device used, and the behavior patterns. It is particularly useful in preventing unauthorized access even if an attacker has obtained a valid password.
* Rule-based (A) focuses on predefined rules and is less flexible in adapting to dynamic threats.
* Time-based (B) authentication considers the time factor but doesn't provide comprehensive protection against stolen credentials.
* Role-based (C) is more about access control based on the user's role within the organization rather than authenticating the user based on current context.
By implementing context-based authentication, the company can ensure that even if a password is compromised, the additional contextual factors required for access (which an attacker is unlikely to possess) provide a robust defense mechanism.
References:
* CompTIA SecurityX guide on authentication models and best practices.
* NIST guidelines on authentication and identity proofing.
* Analysis of multi-factor and adaptive authentication techniques.

質問 # 52
A security team is responding to malicious activity and needs to determine the scope of impact the malicious activity appears to affect certain version of an application used by the organization Which of the following actions best enables the team to determine the scope of Impact?

• A. Performing a port scan
• B. Inspecting egress network traffic
• C. Analyzing user behavior
• D. Reviewing the asset inventory

正解：D

解説：
Reviewing the asset inventory allows the security team to identify all instances of the affected application versions within the organization. By knowing which systems are running the vulnerable versions, the team can assess the full scope of the impact, determine which systems might be compromised, and prioritize them for further investigation and remediation.
Performing a port scan (Option A) might help identify open ports but does not provide specific information about the application versions. Inspecting egress network traffic (Option B) and analyzing user behavior (Option D) are important steps in the incident response process but do not directly identify which versions of the application are affected.
References:
* CompTIA Security+ Study Guide
* NIST SP 800-61 Rev. 2, "Computer Security Incident Handling Guide"
* CIS Controls, "Control 1: Inventory and Control of Hardware Assets" and "Control 2: Inventory and Control of Software Assets"

質問 # 53
Audit findings indicate several user endpoints are not utilizing full disk encryption During me remediation process, a compliance analyst reviews the testing details for the endpoints and notes the endpoint device configuration does not support full disk encryption Which of the following is the most likely reason me device must be replaced'

• A. The motherboard was not configured with a TPM from the OEM supplier.
• B. The HSM is vulnerable to common exploits and a firmware upgrade is needed
• C. The vTPM was not properly initialized and is corrupt.
• D. The HSM is outdated and no longer supported by the manufacturer
• E. The HSM does not support sealing storage

正解：A

解説：
The most likely reason the device must be replaced is that the motherboard was not configured with a TPM (Trusted Platform Module) from the OEM (Original Equipment Manufacturer) supplier.
Why TPM is Necessary for Full Disk Encryption:
* Hardware-Based Security: TPM provides a hardware-based mechanism to store encryption keys securely, which is essential for full disk encryption.
* Compatibility: Full disk encryption solutions, such as BitLocker, require TPM to ensure that the encryption keys are securely stored and managed.
* Integrity Checks: TPM enables system integrity checks during boot, ensuring that the device has not been tampered with.
Other options do not directly address the requirement for TPM in supporting full disk encryption:
* A. The HSM is outdated: While HSM (Hardware Security Module) is important for security, it is not typically used for full disk encryption.
* B. The vTPM was not properly initialized: vTPM (virtual TPM) is less common and not typically a reason for requiring hardware replacement.
* C. The HSM is vulnerable to common exploits: This would require a firmware upgrade, not replacement of the device.
* E. The HSM does not support sealing storage: Sealing storage is relevant but not the primary reason for requiring TPM for full disk encryption.
References:
* CompTIA SecurityX Study Guide
* "Trusted Platform Module (TPM) Overview," Microsoft Documentation
* "BitLocker Deployment Guide," Microsoft Documentation

質問 # 54
A cybersecurity architect is reviewing the detection and monitoring capabilities for a global company that recently made multiple acquisitions. The architect discovers that the acquired companies use different vendors for detection and monitoring The architect's goal is to:
* Create a collection of use cases to help detect known threats
* Include those use cases in a centralized library for use across all of the companies Which of the following is the best way to achieve this goal?

• A. TAXII/STIX library
• B. Ariel Query Language
• C. UBA rules and use cases
• D. Sigma rules

正解：D

解説：
To create a collection of use cases for detecting known threats and include them in a centralized library for use across multiple companies with different vendors, Sigma rules are the best option. Here's why:
* Vendor-Agnostic Format: Sigma rules are a generic and open standard for writing SIEM (Security Information and Event Management) rules. They can be translated to specific query languages of different SIEM systems, making them highly versatile and applicable across various platforms.
* Centralized Rule Management: By using Sigma rules, the cybersecurity architect can create a centralized library of detection rules that can be easily shared and implemented across different detection and monitoring systems used by the acquired companies. This ensures consistency in threat detection capabilities.
* Ease of Use and Flexibility: Sigma provides a structured and straightforward format for defining detection logic. It allows for the easy creation, modification, and sharing of rules, facilitating collaboration and standardization across the organization.

質問 # 55
A company isolated its OT systems from other areas of the corporate network These systems are required to report usage information over the internet to the vendor Which oi the following b*st reduces the risk of compromise or sabotage' (Select two).

• A. Implementing allow lists
• B. Performing boot Integrity checks
• C. Encrypting data at rest
• D. Implementing a site-to-site IPSec VPN
• E. Monitoring network behavior
• F. Executing daily health checks

正解：A、D

解説：
* A. Implementing allow lists: Allow lists (whitelisting) restrict network communication to only authorized devices and applications, significantly reducing the attack surface by ensuring that only pre-approved traffic is permitted.
* F. Implementing a site-to-site IPSec VPN: A site-to-site VPN provides a secure, encrypted tunnel for data transmission between the OT systems and the vendor, protecting the data from interception and tampering during transit.
Other options:
* B. Monitoring network behavior: While useful for detecting anomalies, it does not proactively reduce the risk of compromise or sabotage.
* C. Encrypting data at rest: Important for protecting data stored on devices, but does not address network communication risks.
* D. Performing boot integrity checks: Ensures the integrity of the system at startup but does not protect ongoing network communications.
* E. Executing daily health checks: Useful for maintaining system health but does not directly reduce the risk of network-based compromise or sabotage.
References:
* CompTIA Security+ Study Guide
* NIST SP 800-82, "Guide to Industrial Control Systems (ICS) Security"
* "Industrial Network Security" by Eric D. Knapp and Joel Thomas Langill

質問 # 56
A security engineer needs 10 secure the OT environment based on me following requirements
* Isolate the OT network segment
* Restrict Internet access.
* Apply security updates two workstations
* Provide remote access to third-party vendors
Which of the following design strategies should the engineer implement to best meet these requirements?

• A. Implement a bastion host in the OT network with security tools in place to monitor access and use a dedicated update server for the workstations.
• B. Deploy a jump box on the third party network to access the OT environment and provide updates using a physical delivery method on the workstations
• C. Create a staging environment on the OT network for the third-party vendor to access and enable automatic updates on the workstations.
• D. Enable outbound internet access on the OT firewall to any destination IP address and use the centralized update server for the workstations

正解：A

解説：
To secure the Operational Technology (OT) environment based on the given requirements, the best approach is to implement a bastion host in the OT network. The bastion host serves as a secure entry point for remote access, allowing third-party vendors to connect while being monitored by security tools. Using a dedicated update server for workstations ensures that security updates are applied in a controlled manner without direct internet access.
References:
* CompTIA SecurityX Study Guide: Recommends the use of bastion hosts and dedicated update servers for securing OT environments.
* NIST Special Publication 800-82, "Guide to Industrial Control Systems (ICS) Security": Advises on isolating OT networks and using secure remote access methods.
* "Industrial Network Security" by Eric D. Knapp and Joel Thomas Langill: Discusses strategies for securing OT networks, including the use of bastion hosts and update servers.

質問 # 57
A security architect is establishing requirements to design resilience in un enterprise system trial will be extended to other physical locations. The system must
* Be survivable to one environmental catastrophe
* Re recoverable within 24 hours of critical loss of availability
* Be resilient to active exploitation of one site-to-site VPN solution

• A. Use orchestration to procure, provision, and transfer application workloads lo cloud services
• B. Load-balance connection attempts and data Ingress at internet gateways
• C. Implement full weekly backups to be stored off-site for each of the company's sites
• D. Allocate fully redundant and geographically distributed standby sites.
• E. Lease space to establish cold sites throughout other countries
• F. Employ layering of routers from diverse vendors

正解：D

解説：
To design resilience in an enterprise system that can survive environmental catastrophes, recover within 24 hours, and be resilient to active exploitation, the best strategy is to allocate fully redundant and geographically distributed standby sites. Here's why:
* Geographical Redundancy: Having geographically distributed standby sites ensures that if one site is affected by an environmental catastrophe, the other sites can take over, providing continuity of operations.
* Full Redundancy: Fully redundant sites mean that all critical systems and data are replicated, enabling quick recovery in the event of a critical loss of availability.
* Resilience to Exploitation: Distributing resources across multiple sites reduces the risk of a single point of failure and increases resilience against targeted attacks.
* References:
* CompTIA Security+ SY0-601 Study Guide by Mike Chapple and David Seidl
* NIST Special Publication 800-34: Contingency Planning Guide for Federal Information Systems
* ISO/IEC 27031:2011 - Guidelines for Information and Communication Technology Readiness for Business Continuity

質問 # 58
A security architect wants to develop a baseline of security configurations These configurations automatically will be utilized machine is created Which of the following technologies should the security architect deploy to accomplish this goal?

• A. Short
• B. GASB
• C. Ansible
• D. CMDB

正解：C

解説：
To develop a baseline of security configurations that will be automatically utilized when a machine is created, the security architect should deploy Ansible. Here's why:
* Automation: Ansible is an automation tool that allows for the configuration, management, and deployment of applications and systems. It ensures that security configurations are consistently applied across all new machines.
* Scalability: Ansible can scale to manage thousands of machines, making it suitable for large enterprises that need to maintain consistent security configurations across their infrastructure.
* Compliance: By using Ansible, organizations can enforce compliance with security policies and standards, ensuring that all systems are configured according to best practices.
* References:
* CompTIA Security+ SY0-601 Study Guide by Mike Chapple and David Seidl
* Ansible Documentation: Best Practices
* NIST Special Publication 800-40: Guide to Enterprise Patch Management Technologies

質問 # 59
An organization wants to manage specialized endpoints and needs a solution that provides the ability to
* Centrally manage configurations
* Push policies.
* Remotely wipe devices
* Maintain asset inventory
Which of the following should the organization do to best meet these requirements?

• A. Implement a mobile device management solution.
• B. Use a configuration management database
• C. Deploy a software asset manager
• D. Configure contextual policy management

正解：A

解説：
To meet the requirements of centrally managing configurations, pushing policies, remotely wiping devices, and maintaining an asset inventory, the best solution is to implement a Mobile Device Management (MDM) solution.
MDM Capabilities:
* Central Management: MDM allows administrators to manage the configurations of all devices from a central console.
* Policy Enforcement: MDM solutions enable the push of security policies and updates to ensure compliance across all managed devices.
* Remote Wipe: In case a device is lost or stolen, MDM provides the capability to remotely wipe the device to protect sensitive data.
* Asset Inventory: MDM maintains an up-to-date inventory of all managed devices, including their configurations and installed applications.
Other options do not provide the same comprehensive capabilities required for managing specialized endpoints.
References:
* CompTIA SecurityX Study Guide
* NIST Special Publication 800-124 Revision 1, "Guidelines for Managing the Security of Mobile Devices in the Enterprise"
* "Mobile Device Management Overview," Gartner Research

質問 # 60
A network engineer must ensure that always-on VPN access is enabled Curt restricted to company assets Which of the following best describes what the engineer needs to do''

• A. Modify signing certificates in order to support IKE version 2
• B. Add the VPN hostname as a SAN entry on the root certificate
• C. Create a wildcard certificate for connections from public networks
• D. Generate device certificates using the specific template settings needed

正解：D

解説：
To ensure always-on VPN access is enabled and restricted to company assets, the network engineer needs to generate device certificates using the specific template settings required for the company's VPN solution.
These certificates ensure that only authorized devices can establish a VPN connection.
Why Device Certificates are Necessary:
* Authentication: Device certificates authenticate company assets, ensuring that only authorized devices can access the VPN.
* Security: Certificates provide a higher level of security compared to username and password combinations, reducing the risk of unauthorized access.
* Compliance: Certificates help in meeting security policies and compliance requirements by ensuring that only managed devices can connect to the corporate network.
Other options do not provide the same level of control and security for always-on VPN access:
* B. Modify signing certificates for IKE version 2: While important for VPN protocols, it does not address device-specific authentication.
* C. Create a wildcard certificate: This is not suitable for device-specific authentication and could introduce security risks.
* D. Add the VPN hostname as a SAN entry: This is more related to certificate management and does not ensure device-specific authentication.
References:
* CompTIA SecurityX Study Guide
* "Device Certificates for VPN Access," Cisco Documentation
* NIST Special Publication 800-77, "Guide to IPsec VPNs"

質問 # 61
A central bank implements strict risk mitigations for the hardware supply chain, including an allow list for specific countries of origin. Which of the following best describes the cyberthreat to the bank?

• A. Fragility and other availability attacks
• B. Ability to obtain components during wartime
• C. Non-conformance to accepted manufacturing standards
• D. Physical Implants and tampering

正解：D

解説：
The best description of the cyber threat to a central bank implementing strict risk mitigations for the hardware supply chain, including an allow list for specific countries of origin, is the risk of physical implants and tampering. Here's why:
* Supply Chain Security: The supply chain is a critical vector for hardware tampering and physical implants, which can compromise the integrity and security of hardware components before they reach the organization.
* Targeted Attacks: Banks and financial institutions are high-value targets, making them susceptible to sophisticated attacks, including those involving physical implants that can be introduced during manufacturing or shipping processes.
* Strict Mitigations: Implementing an allow list for specific countries aims to mitigate the risk of supply chain attacks by limiting the sources of hardware. However, the primary concern remains the introduction of malicious components through tampering.
* References:
* CompTIA Security+ SY0-601 Study Guide by Mike Chapple and David Seidl
* NIST Special Publication 800-161: Supply Chain Risk Management Practices for Federal Information Systems and Organizations
* ISO/IEC 20243:2018 - Information Technology - Open Trusted Technology Provider Standard

質問 # 62
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