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CY-503 (A) · Biometric Techniques for Security/Important Questions

Biometric Techniques for Security (CY-503 (A)) - Important Questions

  1. Unit 314 Marks Medium Priority Asked: 2023

    Discuss in detail biometric authentication. Describe system components, enrollment and matching phases, and common deployment models (verification and identification).

    Direct reuse from past-paper trend: core, broad question on biometric authentication concepts (appeared in past papers).

  2. Unit 314 Marks Low Priority

    Compare fingerprint, iris and facial recognition techniques: describe technical characteristics, algorithmic pipeline, advantages, limitations and suitable deployment scenarios for each modality.

    Common comparative question required to evaluate candidate understanding of modalities and deployment suitability (frequently asked in exams and recommended for practice).

  3. Unit 310 Marks Low Priority

    Explain multi-biometric fusion. Describe sensor-level, feature-level, score-level and decision-level fusion methods, and discuss advantages and practical challenges for each level.

    Covers multi-biometric concepts that are high-yield for design and evaluation questions though not yet repeated in past-papers frequently.

  4. Unit 37 Marks Low Priority

    Define and explain the commonly used biometric performance metrics: False Accept Rate (FAR), False Reject Rate (FRR), Equal Error Rate (EER) and Receiver Operating Characteristic (ROC). Provide the mathematical definitions and explain their operational meaning.

    Performance metrics question: core technical definitions and formulae that students must know for analysis and evaluation tasks.

  5. Unit 310 Marks Low Priority

    Describe the process for selecting an appropriate biometric for a given application. List and explain key performance, environmental, usability and privacy considerations that influence the choice.

    Practical selection and design question — important for system-level examination style problems and case studies.

  6. Unit 37 Marks Medium Priority Asked: 2022

    Explain the role of smart cards in biometric systems. Discuss architectures for storing biometric templates on smart cards and the security/privacy benefits and limitations of card-based biometric solutions.

    Appeared in past papers; focuses on integration of biometrics with secure tokens/smart cards — an applied systems question.

  7. Unit 310 Marks Low Priority

    Describe biometric template protection techniques. Explain cancellable biometrics, secure sketch / fuzzy extractor approaches, and template encryption — compare their strengths and weaknesses.

    Template protection and privacy is a recurring and high-value topic for modern biometric security assessments.

  8. Unit 310 Marks Low Priority

    Explain biometric cryptosystems such as the fuzzy commitment and fuzzy vault schemes. Describe their working principles and discuss how they bind cryptographic keys to biometric data.

    Covers cryptographic constructions specific to biometrics (highly technical and often asked in advanced questions).

  9. Unit 37 Marks Low Priority

    List and explain common attacks on biometric systems (presentation attacks/spoofing, replay attacks, template inversion, hill-climbing). For each attack type, describe practical countermeasures and detection techniques.

    Security threats and countermeasures are crucial for exam answers addressing robustness and real-world deployments.

  10. Unit 37 Marks Low Priority

    Draw and explain the architecture of a generic biometric system. Describe the function of each module: sensor, preprocessing, feature extraction, matcher, template database and decision module.

    Core systems-level question to test understanding of end-to-end biometric pipeline and component roles.

  11. Unit 314 Marks Low Priority

    Write short notes on any four:

    • Template interoperability and standards (ISO/IEC formats)
    • Liveness detection techniques
    • Legal and privacy issues in biometric data collection and storage
    • Performance tuning and threshold selection for verification systems
    • Biometric system evaluation protocols (cross-validation, dataset partitioning)

    Practical and exam-relevant short-notes style question covering interoperability and operational security in deployments.

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