CompTIA CAS-005 Online Practice Questions and Exam Preparation

CompTIA CAS-005 Online Questions & Answers

• Question 191:

  A Chief Information Security Officer is concerned about the operational impact of ransomware. In the event of a ransomware attack, the business requires the integrity of the data to remain intact and an RPO of less than one hour. Which of the following storage strategies best satisfies the business requirements?

  A. Full disk encryption
  B. Remote journaling
  C. Immutable
  D. RAID 10
  B. Remote journaling

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  Explanation

  Remote journaling continuously sends log updates to a remote system, ensuring near-real-time backup and an RPO (Recovery Point Objective) under one hour.

  Key concepts:

  RPO under one hour means minimal data loss.

  Remote journaling provides rapid recovery by keeping near-live backups.

  Other options:

  A (Full disk encryption) protects against unauthorized access but does not aid recovery.

  C (Immutable storage) prevents modification but does not ensure real-time backups.

  D (RAID 10) improves redundancy but does not help against ransomware.

• Question 192:

  A game developer wants to reach new markets and is advised by legal counsel to include specific age-related sign-up requirements. Which of the following best describes the legal counsel's concerns?

  A. GDPR
  B. LGPD
  C. PCI DSS
  D. COPPA
  D. COPPA

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  The correct regulation is COPPA (Children's Online Privacy Protection Act). COPPA is a U.S. law that requires organizations to obtain parental consent and implement specific protections before collecting personal data from children under the age of 13. Since the legal counsel is advising about age-related sign-up requirements, the concern clearly points to COPPA compliance.

  GDPR (A) is a European regulation governing privacy and data protection but is broader and not specifically tied to children's age verification, though it has related provisions. LGPD (B) is Brazil's data protection law, similar in scope to GDPR. PCI DSS (C) is focused on protecting cardholder data in payment environments, unrelated to age-related concerns.

  CAS-005 covers the importance of aligning software platforms with legal and regulatory frameworks. For gaming and online services, COPPA compliance is crucial to avoid fines and reputational harm, ensuring the platform properly handles children's data.

• Question 193:

  A company wants to improve and automate the compliance of its cloud environments to meet industry standards. Which of the following resources should the company use to best achieve this goal?

  A. Jenkins
  B. Python
  C. Ansible
  D. PowerShell
  C. Ansible

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  Explanation

  Comprehensive and Detailed Explanation:

  Automating compliance in cloud environments requires a tool that can enforce configurations, manage infrastructure as code, and align with industry standards (e.g., NIST, ISO). Let's evaluate:

  A. Jenkins:A CI/CD tool for automating software builds and deployments. It's not designed for compliance enforcement or infrastructure management.

  B. Python:A programming language that can be scripted for automation but lacks built-in compliance-focused features without significant custom development.

  C. Ansible:An automation tool for configuration management, application deployment, and compliance enforcement. It uses playbooks to define desired states, making it ideal for automating compliance checks and remediation in cloud environments (e.g., AWS, Azure). CAS-005 emphasizes automation tools for security and compliance, and Ansible fits perfectly.

  CompTIA SecurityX (CAS-005) objectives, Domain 3: Security Engineering and Cryptography, focusing on automation for compliance in cloud environments.

• Question 194:

  Which of the following best describes the challenges associated with widespread adoption of homomorphic encryption techniques?

  A. Incomplete mathematical primitives
  B. No use cases to drive adoption
  C. Quantum computers not yet capable
  D. insufficient coprocessor support
  D. insufficient coprocessor support

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  Explanation

  Homomorphic encryption allows computations to be performed on encrypted data without decrypting it, providing strong privacy guarantees. However, the adoption of homomorphic encryption is challenging due to several factors:

  A. Incomplete mathematical primitives: This is not the primary barrier as the theoretical foundations of homomorphic encryption are well-developed.

  B. No use cases to drive adoption: There are several compelling use cases for homomorphic

  encryption, especially in privacy-sensitive fields like healthcare and finance.

  C. Quantum computers not yet capable: Quantum computing is not directly related to the challenges of adopting homomorphic encryption.

  D. Insufficient coprocessor support: The computational overhead of homomorphic encryption is

  significant, requiring substantial processing power. Current general- purpose processors are not optimized for the intensive computations required by homomorphic encryption, limiting its practical deployment. Specialized hardware or

  coprocessors designed to handle these computations more efficiently are not yet widely available.

  References:

  CompTIA Security+ Study Guide

  "Homomorphic Encryption: Applications and Challenges" by Rivest et al.

  NIST, "Report on Post-Quantum Cryptography"

• Question 195:

  A security researcher identified the following messages while testing a web application:

  /file/admin/myprofile.php ERROR file does not exist.

  /file/admin/userinfo.php ERROR file does not exist.

  /file/admin/adminprofile.php ERROR file does not exist.

  /file/admin/admininfo.php ERROR file does not exist.

  /file/admin/universalprofile.php ERROR file does not exist. /file/admin/universalinfo.php ERROR file does not exist.

  /file/admin/restrictedprofile.php ACCESS is denied.

  /file/admin/restrictedinfo.php ERROR file does not exist.

  Which of the following should the researcher recommend to remediate the issue?

  A. Software composition analysis
  B. Packet inspection
  C. Proper error handling
  D. Elimination of the use of unsafe functions
  C. Proper error handling

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  Explanation

  The messages provide information about the existence and access permissions of certain files, which can be useful to an attacker. Proper error handling involves:

  Ensuring that error messages do not reveal sensitive information about the server or its structure. Customizing error messages to be generic and user-friendly without disclosing specifics about the error (e.g., "An error occurred" instead of "ERROR file does not exist" or "ACCESS is denied"). Logging detailed error information on the server-side for debugging purposes without exposing it to the end user.

• Question 196:

  After an organization met with its ISAC, the organization decided to test the resiliency of its security controls against a small number of advanced threat actors. Which of the following will enable the security administrator to accomplish this task?

  A. Adversary emulation
  B. Reliability factors
  C. Deployment of a honeypot
  D. Internal reconnaissance
  A. Adversary emulation

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  Explanation

• Question 197:

  SIMULATION

  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.

  

  

  A. See the complete solution below in Explanation.
  B. PlaceHolder
  C. PlaceHolder
  D. PlaceHolder
  A. See the complete solution below in Explanation.

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  Explanation

  Analysis and Remediation Options for Each IoC:

  IoC 1:

  Evidence:

  Analysis:

  Remediation:

  IoC 2:

  Evidence:

  Analysis:

  Remediation:

  IoC 3:

  Evidence:

  Analysis:

  Remediation:

  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.

• Question 198:

  Attempts to run the code in a sandbox produce no results. 4d 5a 90 00 03 00 00 00 04 00 00 00 ff ff 00 00 b8 00 00 00 00 00 00 00 40 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 80 00 00 00 0e 1f ba 0e 00 b4 09 cd 21 b8 01 4c cd 21 54 68 69 73 20 70 72 6f 67 72 61 6d 20 63 61 6e 6e 6f 74 20 62 65 20 72 75 6e 20 69 6e 20 44 4f 53 20 6d 6f 64 65 2e 0d 0d 0a 24 00 00 00 00 00 00 00 50 45 00 00 4c 01 03 00 34 6d be 66 00 00 00 00 00 00 00 00 e0 00 0f 03 0b 01 05 00 00 70 00 00 00 10 00 00 00 d0 00 00 70 4c 01 00 00 e0 00 00 00 50 01 00 00 00 40 00 00 10 00 00 00 02 00 00 04 00 00 00 00 00 00 00 04 00 00 00 00 00 00 00 00 60 01 00 00 02 00 00 00 00 00 00 03 00 00 00 00 00 10 00 00 10 00 00 00 00 10 00 00 10 00 00 00 00 00 00 10 00 00 00 00 00 00 00 00 00 00 00 Which of the following should the malware analyst do next to further analyze the malware and discover useful IoCs?

  A. Convert the hex-encoded sample to binary and attempt to decompile it.
  B. Run the encoded sample through an online vulnerability tool and check for any matches.
  C. Pad the beginning and end of the sample with binary executables and attempt to execute it.
  D. Use a disassembler on the unencoded snippet to convert from binary to ASCII text.
  A. Convert the hex-encoded sample to binary and attempt to decompile it.

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  The provided hex sequence begins with "4d 5a," which corresponds to the ASCII characters "MZ," indicating the presence of a DOS MZ executable file header. This suggests that the sample is a Windows executable file. To analyze this malware effectively, the analyst should convert the hex-encoded data back into its binary form to reconstruct the executable file. Once converted, the analyst can use decompilation tools to translate the binary code into a higher-level programming language, facilitating a

  deeper understanding of the malware's functionality and the extraction of Indicators of Compromise (IoCs).

  Other options, such as running the sample through an online vulnerability tool (Option B) or padding it with executables (Option C), are less effective without first converting the hex data back to its original binary form. Using a disassembler on the unencoded snippet (Option D) would not be feasible until the hex data is properly reconstructed into its executable binary format.

  CompTIA SecurityX CAS-005 Official Study Guide, Chapter 5: "Malware Analysis," Section 5.3:"Static and Dynamic Analysis Techniques."

• Question 199:

  A social media company wants to change encryption ciphers after identifying weaknesses in the implementation of the existing ciphers. The company needs the new ciphers to meet the following requirements:

  Utilize less RAM than competing ciphers.

  Be more CPU-efficient than previous ciphers.

  Require customers to use TLS 1.3 while broadcasting video or audio.

  Which of the following is the best choice for the social media company?

  A. IDEA-CBC
  B. AES-GCM
  C. ChaCha20-Poly1305
  D. Camellia-CBC
  C. ChaCha20-Poly1305

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  Explanation

  ChaCha20-Poly1305is a cipher suite specifically designed for efficiency on systems with limited hardware resources. It offers high security with lower memory and CPU consumption compared to AES on certain platforms, especially mobile

  devices. TLS 1.3 supports ChaCha20-Poly1305 natively. CBC (Cipher Block Chaining) modes like IDEA- CBC and Camellia-CBC are less efficient and not recommended under TLS 1.3, and AES- GCM, while secure, can be less efficient

  than ChaCha20 on devices without AES hardware acceleration.

  CompTIA SecurityX CAS-005, Domain 3.0: Implement secure protocols including TLS 1.3 and lightweight cipher selections for performance efficiency.

• Question 200:

  SIMULATION

  A product development team has submitted code snippets for review pnor to release INSTRUCTIONS.

  Analyze the code snippets and then select one vulnerability and one fix for each code snippet If at any time you would like to bang back the initial state of the simulation, please click the Reset All button.

  

  A. See the complete solution below in Explanation.
  B. PlaceHoder
  C. PlaceHoder
  D. PlaceHoder
  A. See the complete solution below in Explanation.

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  Explanation