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

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

  1. Unit 414 Marks Medium Priority

    Discuss signature and handwriting technology in detail. Your answer should include technical description, classification, data acquisition methods, feature extraction techniques, evaluation metrics, strengths, weaknesses and typical deployment scenarios.

    Core topic from Unit 4: Signature and handwriting recognition technical coverage (data acquisition, classification and features).

  2. Unit 414 Marks Medium Priority

    Explain keyboard/keystroke dynamics: data acquisition procedures, feature extraction methods (e.g., dwell time, flight time), characteristic properties, strengths and weaknesses of keystroke biometrics, and practical deployment issues.

    Direct coverage of keystroke dynamics aspects listed in Unit 4 heatmap: acquisition, features and deployment considerations.

  3. Unit 414 Marks Medium Priority

    Describe voice biometrics in detail. Cover data acquisition (microphone, channel effects), feature extraction (e.g., MFCCs, LPC), modeling approaches, characteristic features, strengths, weaknesses and deployment considerations.

    Core Unit 4 topic covering voice biometric system pipeline and evaluation.

  4. Unit 410 Marks Medium Priority

    Compare signature/handwriting, keystroke dynamics and voice biometrics: describe their characteristic features, advantages, limitations and suitable deployment scenarios for each modality.

    Comparative analysis question often used to test understanding of modality selection and trade-offs.

  5. Unit 47 Marks Medium Priority

    Explain multi-biometric fusion with emphasis on sensor-level, feature-level, score-level and decision-level fusion. Discuss advantages, challenges and examples of where each fusion level is appropriate.

    Unit 4 topic on multi-biometric fusion approaches and their trade-offs.

  6. Unit 47 Marks Medium Priority

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

    Practical selection guideline question to test application-driven biometric choice and consideration of privacy & performance.

  7. Unit 47 Marks Medium Priority

    Discuss template security for biometric systems: storage options, threats to templates, cancellable biometrics, biometric cryptosystems and the role of encryption/hashing in protecting biometric templates.

    Security-focused Unit 4 question on template protection and biometric cryptosystems.

  8. Unit 47 Marks Medium Priority

    Explain spoofing and presentation attacks relevant to signature, keystroke dynamics and voice biometrics. Describe common liveness detection and anti-spoofing countermeasures for each modality.

    Attack and countermeasure question relevant to behavioral and physiological biometrics in Unit 4.

  9. Unit 47 Marks High Priority

    Define and explain the following performance metrics used in biometric systems: False Acceptance Rate (FAR), False Rejection Rate (FRR) and Equal Error Rate (EER). Provide mathematical expressions for FAR and FRR.

    Core evaluation metrics question for biometric system performance (mathematical definitions included).

  10. Unit 47 Marks Low Priority

    Describe data acquisition and preprocessing steps for signature, keystroke and voice biometrics. Discuss sampling, noise reduction, normalization and feature selection issues that affect system accuracy.

    Practical Unit 4 question on preprocessing and sensor issues which commonly appears in exam-style evaluations.

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