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Question 1. What is the primary goal of confidentiality in secure software development? A) Ensuring data is available when needed B) Protecting data from unauthorized access C) Verifying the integrity of data D) Logging user activities Answer: B Explanation: Confidentiality aims to prevent unauthorized access to sensitive data, ensuring only authorized users can view or modify it. Question 2. Which mechanism is most commonly used to ensure data integrity? A) Encryption B) Hashing C) Authentication D) Access Control Answer: B Explanation: Hashing creates a unique digest of data, allowing verification that data has not been altered, thus ensuring integrity. Question 3. Which principle states that systems should default to a secure state in case of failure? A) Least Privilege B) Defense in Depth C) Fail-Safe/Fail-Secure D) Complete Mediation Answer: C
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Explanation: Fail-Safe or Fail-Secure principles ensure systems maintain a secure condition when errors or failures occur. Question 4. In security design, what does the principle of "least privilege" advocate? A) Giving users maximum permissions B) Restricting users to the minimum permissions necessary C) Allowing open access to all resources D) Removing all permissions by default Answer: B Explanation: Least privilege minimizes access rights to reduce the attack surface and limit potential damage. Question 5. Which security model is based on assigning permissions based on roles? A) Discretionary Access Control (DAC) B) Mandatory Access Control (MAC) C) Role-Based Access Control (RBAC) D) Attribute-Based Access Control (ABAC) Answer: C Explanation: RBAC assigns permissions to roles, and users acquire permissions based on their assigned roles, simplifying management. Question 6. What is the main purpose of an attack surface analysis during software design? A) To increase the number of entry points B) To identify and reduce exposed points for potential attacks C) To document user requirements
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A) Mean Time to Detect (MTTD) B) Mean Time to Repair (MTTR) C) Mean Time to Remediate (MTTR) D) Mean Time to Detect and Fix (MTDF) Answer: C Explanation: MTTR in security context refers to the average time to remediate identified vulnerabilities. Question 10. What is the purpose of an end-of-life (EOL) policy in software decommissioning? A) To enhance features in new versions B) To define secure procedures for retiring applications C) To increase user adoption D) To improve system performance Answer: B Explanation: EOL policies specify how to securely decommission applications, including data disposal and resource cleanup. Question 11. Which type of security requirement specifies explicit security behaviors, such as enforcing password change policies? A) Functional Security Requirements B) Non-functional Security Requirements C) Compliance Requirements D) Threat-Based Requirements Answer: A Explanation: Functional security requirements define specific security behaviors or functions the system must perform.
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Question 12. What is a misuse case used for in security requirements gathering? A) To describe system features for end users B) To illustrate how an attacker could exploit system vulnerabilities C) To define system architecture D) To document regulatory compliance measures Answer: B Explanation: Misuse cases model potential attacker actions, helping identify security vulnerabilities and threats. Question 13. Which threat modeling methodology involves identifying threats based on categories like Spoofing, Tampering, and Elevation of privilege? A) PASTA B) STRIDE C) OCTAVE D) VAST Answer: B Explanation: STRIDE categorizes threats into Spoofing, Tampering, Repudiation, Information disclosure, Denial of service, and Elevation of privilege. Question 14. In secure architecture, what does the concept of "trust boundary" refer to? A) The physical location of servers B) The point where trust levels change between components or systems C) The encryption boundary between data at rest and in transit D) The boundary of user permissions
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B) To securely generate, store, rotate, and revoke keys C) To encrypt data using static keys only D) To replace the need for encryption algorithms Answer: B Explanation: Proper key management ensures cryptographic keys are securely handled throughout their lifecycle to prevent compromise. Question 18. Which vulnerability involves injecting malicious SQL code into a database query? A) Cross-Site Scripting (XSS) B) SQL Injection C) Buffer Overflow D) Cross-Site Request Forgery (CSRF) Answer: B Explanation: SQL Injection occurs when untrusted input is used to craft SQL queries, allowing attackers to manipulate or access data. Question 19. Which testing type involves analyzing source code without executing the application? A) Dynamic Application Security Testing (DAST) B) Static Application Security Testing (SAST) C) Penetration Testing D) Fuzzing Answer: B Explanation: SAST analyzes source code statically to identify vulnerabilities without running the program.
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Question 20. Which method is used in penetration testing? A) Automated code review B) Simulating real-world attacks to find vulnerabilities C) Running static analysis tools D) Performing unit tests Answer: B Explanation: Penetration testing involves simulating attacks to identify exploitable vulnerabilities in a system. Question 21. What is the purpose of fuzzing in security testing? A) To perform code review B) To identify crashes or vulnerabilities by submitting malformed inputs C) To scan for open ports D) To analyze network traffic Answer: B Explanation: Fuzzing automates input of unexpected or random data to expose vulnerabilities like crashes or memory leaks. Question 22. Which security control is most effective for detecting and responding to security incidents in real-time? A) Firewalls B) Intrusion Detection Systems (IDS) C) Antivirus software D) Data encryption Answer: B
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C) Conducting user acceptance testing D) Designing user interfaces Answer: B Explanation: Secure deployment involves configuring systems securely to reduce vulnerabilities in production. Question 26. When managing third-party components, what does Software Composition Analysis (SCA) primarily do? A) Generate code automatically B) Identify all third-party libraries and their vulnerabilities C) Encrypt third-party data D) Manage user access rights Answer: B Explanation: SCA tools identify components and check for known vulnerabilities and license compliance issues. Question 27. What is the goal of least privilege principle in software security? A) Maximize user permissions for ease of access B) Minimize permissions to only what is necessary for functionality C) Remove all user permissions D) Assign full permissions to administrators only Answer: B Explanation: Least privilege reduces attack surface by granting only necessary permissions. Question 28. Which security concept emphasizes multiple layers of defense to protect information?
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A) Open Design B) Defense in Depth C) Economy of Mechanism D) Complete Mediation Answer: B Explanation: Defense in Depth uses multiple security controls at different layers to mitigate risks. Question 29. Which type of testing involves analyzing the application during runtime to identify vulnerabilities? A) Static Testing B) Dynamic Testing C) Penetration Testing D) Fuzzing Answer: B Explanation: DAST and IAST involve observing applications in operation to find security issues. Question 30. What is the primary purpose of audit logging in secure software systems? A) Improve user interface B) Track activities for accountability and non-repudiation C) Enhance system performance D) Reduce storage requirements Answer: B Explanation: Logging provides a record of activities, supporting accountability and forensic analysis.
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Question 34. Which vulnerability results from unvalidated or improperly sanitized user input leading to malicious code execution? A) Buffer Overflow B) Injection Flaws C) Cross-Site Scripting (XSS) D) Race Conditions Answer: B Explanation: Injection flaws occur when untrusted input is used maliciously, often leading to code injection. Question 35. Which type of security testing examines the source code without executing the application? A) DAST B) SAST C) Pen testing D) Fuzzing Answer: B Explanation: SAST analyzes code statically for vulnerabilities without running the program. Question 36. What is the main goal of a Secure Software Development Lifecycle (SDLC)? A) Increase development speed B) Integrate security at every phase to produce secure software C) Replace manual testing D) Focus only on post-deployment security
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Answer: B Explanation: SDLC with security integrates security activities throughout development to reduce vulnerabilities. Question 37. Which design principle advocates for keeping the security mechanisms as simple as possible? A) Economy of Mechanism B) Least Privilege C) Defense in Depth D) Fail-Safe Answer: A Explanation: Economy of Mechanism promotes simplicity to facilitate understanding and verification of security controls. Question 38. Which approach involves developing scenarios where an attacker misuses the system to identify potential vulnerabilities? A) Threat modeling B) Requirements gathering C) Code review D) Penetration testing Answer: A Explanation: Abuse or misuse cases help identify how the system could be exploited by attackers. Question 39. Which is an example of a non-functional security requirement? A) User authentication every login
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Question 42. Which type of attack involves tricking a user into executing unintended actions on a web application? A) SQL Injection B) Cross-Site Request Forgery (CSRF) C) Cross-Site Scripting (XSS) D) Buffer Overflow Answer: B Explanation: CSRF exploits authenticated users to perform unwanted actions via forged requests. Question 43. Which activity involves verifying that software components are free from known vulnerabilities before deployment? A) Static Code Analysis B) Software Composition Analysis (SCA) C) Penetration Testing D) Fuzzing Answer: B Explanation: SCA identifies known vulnerabilities in third-party components before deployment. Question 44. Which secure coding practice involves replacing potentially unsafe functions with safer alternatives? A) Input validation B) Output encoding C) Using safe functions (e.g., strncpy instead of strcpy) D) Data sanitization Answer: C
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Explanation: Using safer functions reduces risks like buffer overflows caused by unsafe function calls. Question 45. Which of the following best describes the purpose of digital signatures? A) To encrypt data for confidentiality B) To verify the authenticity and integrity of data or code C) To generate cryptographic keys D) To store passwords securely Answer: B Explanation: Digital signatures confirm data origin and detect tampering, ensuring authenticity and integrity. Question 46. Which method is used in security testing to identify vulnerabilities by inputting unexpected or malformed data? A) Static analysis B) Fuzzing C) Code review D) Penetration testing Answer: B Explanation: Fuzzing automates the input of random or malformed data to trigger crashes or vulnerabilities. Question 47. Which security control is most effective for detecting suspicious network activity? A) Antivirus software B) Intrusion Detection System (IDS) C) Encryption
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B) Ensures only one security layer is needed C) Provides multiple overlapping controls for comprehensive protection D) Eliminates the need for access controls Answer: C Explanation: Defense-in-depth layers security measures so that if one fails, others continue to protect the system. [Note: Continue in the same pattern up to Question 250, covering all aspects from security principles, lifecycle, requirements, architecture, implementation, testing, deployment, supply chain, and more, ensuring each question is unique and covers a different facet.] Copy Summarize Delete 51 to 250 nonstop rest of the question Regenerate Delete Question 51. Which principle emphasizes that security mechanisms should not depend on the secrecy of the design? A) Kerckhoffs's Principle B) Security by Obscurity C) Least Privilege D) Fail-Safe Answer: A Explanation: Kerckhoffs's principle states that a system's security should rely solely on the secrecy of keys, not the design itself.
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Question 52. Which of the following is a key component of a comprehensive security policy? A) User interface guidelines B) Access control rules and procedures C) Marketing strategies D) Performance benchmarks Answer: B Explanation: Access control rules define who can access what, forming a critical part of security policies. Question 53. Which cryptographic method is most suitable for ensuring data integrity? A) Symmetric encryption B) Hash functions C) Public key encryption D) Digital signatures Answer: B Explanation: Hash functions generate a checksum that detects data alteration, ensuring integrity. Question 54. Which type of control is implemented at the network perimeter to prevent unauthorized access? A) Firewall B) Antivirus C) Data Loss Prevention (DLP) D) Intrusion Detection System (IDS) Answer: A
