Top 30 multiple-choice questions (MCQs) only focused on the Biometric Authentication in WEB Security covering below topics,along with their answers and explanations.
• Understanding the principles of biometric authentication.
• Discussing potential vulnerabilities and mitigations.
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1. What is the primary principle behind biometric authentication?
- Memorized secrets
- Something the user knows
- Something the user is
- Something the user has
The primary principle behind biometric authentication is "something the user is," referring to unique physiological or behavioral characteristics.
2. Which of the following is an example of a physiological biometric characteristic?
- Password
- Fingerprint
- PIN
- Security token
Fingerprint is an example of a physiological biometric characteristic.
3. What is a potential vulnerability associated with biometric authentication, and how can it be mitigated?
- Lack of uniqueness
- High cost
- Inability to remember
- Spoofing or replication
Spoofing or replication is a potential vulnerability in biometric authentication. It can be mitigated by implementing liveness detection and anti-spoofing measures.
4. Which biometric characteristic is related to the unique patterns in the iris of the eye?
- Fingerprint
- Retina
- Voice
- Iris
The unique patterns in the iris of the eye are associated with the biometric characteristic known as iris recognition.
5. In biometric authentication, what is the term for the process of comparing a captured biometric sample with a stored template?
- Enrollment
- Verification
- Registration
- Authentication
The process of comparing a captured biometric sample with a stored template in biometric authentication is called verification.
6. How does behavioral biometric authentication differ from physiological biometric authentication?
- Behavioral biometrics involve unique physical characteristics, while physiological biometrics involve user behaviors.
- Behavioral biometrics involve user behaviors, while physiological biometrics involve unique physical characteristics.
- Both terms are synonymous and refer to the same concept.
- There is no difference between them.
Behavioral biometrics involve user behaviors, while physiological biometrics involve unique physical characteristics.
7. What is the term for the statistical measurement of the uniqueness of a biometric characteristic within a population?
- Accuracy
- Uniqueness score
- False acceptance rate
- Entropy
Entropy is the term for the statistical measurement of the uniqueness of a biometric characteristic within a population.
8. What is the purpose of a biometric template in the context of biometric authentication systems?
- To store user passwords
- To represent the unique features of a user's biometric data in a compact form
- To manage encryption keys
- To authenticate users based on their behaviors
The purpose of a biometric template is to represent the unique features of a user's biometric data in a compact form for comparison during authentication.
9. What is the term for the failure to enroll a legitimate user in a biometric system?
- False acceptance
- False rejection
- Spoofing
- Liveness detection
The term for the failure to enroll a legitimate user in a biometric system is false rejection.
10. How can the accuracy of a biometric authentication system be measured?
- Throughput
- Entropy
- False acceptance rate
- Liveness detection
The accuracy of a biometric authentication system can be measured through metrics such as the false acceptance rate.
11. Which of the following is a potential advantage of using behavioral biometrics?
- Immunity to changes over time
- High level of uniqueness
- Ease of measurement
- Inability to be captured without user consent
A potential advantage of using behavioral biometrics is its immunity to changes over time, making it suitable for long-term use.
12. What is the term for the process of converting biometric data into a digital format for storage or processing?
- Liveness detection
- Enrollment
- Hashing
- Biometric conversion
The process of converting biometric data into a digital format for storage or processing is called enrollment.
13. What is the potential privacy concern associated with the storage of biometric templates?
- Lack of uniqueness
- High cost
- Inability to remember
- Unauthorized use and potential misuse
The potential privacy concern associated with the storage of biometric templates is unauthorized use and potential misuse.
14. In the context of biometric authentication, what is the term for the rate at which legitimate users are incorrectly denied access?
- False acceptance rate
- False rejection rate
- Equal error rate
- Enrollment rate
In the context of biometric authentication, the false rejection rate is the rate at which legitimate users are incorrectly denied access.
15. How can organizations mitigate the risk of biometric data being compromised?
- By avoiding the use of biometrics
- By implementing strong password policies
- By using secure transmission protocols and encryption for biometric data
- By encouraging users to share their biometric data
Organizations can mitigate the risk of biometric data being compromised by using secure transmission protocols and encryption for biometric data.
16. What is the term for the ability of a biometric system to distinguish between live and non-live (spoofed) biometric samples?
- Accuracy
- Liveness detection
- False acceptance rate
- Uniqueness score
The ability of a biometric system to distinguish between live and non-live (spoofed) biometric samples is known as liveness detection.
17. What is the term for the rate at which the biometric system incorrectly matches an input to a non-matching template?
- False acceptance rate
- False rejection rate
- Equal error rate
- Entropy
The false acceptance rate is the rate at which the biometric system incorrectly matches an input to a non-matching template.
18. What is the potential risk associated with biometric data breaches, and how can it be addressed?
- Lack of uniqueness
- Inability to remember
- Unauthorized use and potential misuse
- Lack of encryption
The potential risk associated with biometric data breaches is unauthorized use and potential misuse. It can be addressed by implementing strong encryption and access controls.
19. What is the primary advantage of using biometric authentication over traditional password-based authentication?
- Lower cost
- Higher speed
- User convenience and reduced reliance on memorized secrets
- Inability to be forgotten
The primary advantage of using biometric authentication over traditional password-based authentication is user convenience and reduced reliance on memorized secrets.
20. What is the term for a system that uses multiple biometric modalities for authentication?
- Multi-modal biometric system
- Biometric fusion system
- Liveness detection system
- Unimodal biometric system
A system that uses multiple biometric modalities for authentication is called a multi-modal biometric system.
21. Which of the following is an example of a behavioral biometric characteristic?
- Fingerprint
- Retina
- Keystroke dynamics
- Iris
Keystroke dynamics is an example of a behavioral biometric characteristic.
22. What is the term for a false biometric match, allowing an unauthorized user access?
- False acceptance
- False rejection
- Equal error rate
- Spoofing
A false biometric match, allowing an unauthorized user access, is known as false acceptance.
23. In biometric authentication, what is the term for a false non-match, denying access to a legitimate user?
- False acceptance
- False rejection
- Equal error rate
- Spoofing
In biometric authentication, a false non-match, denying access to a legitimate user, is known as false rejection.
24. What is the term for the probability that a biometric system will incorrectly accept an imposter?
- Accuracy
- Liveness detection
- False acceptance rate
- Uniqueness score
The probability that a biometric system will incorrectly accept an imposter is measured by the false acceptance rate.
25. Which of the following is a potential challenge with the deployment of biometric systems?
- High cost
- Low accuracy
- Lack of user acceptance
- Inability to scale
A potential challenge with the deployment of biometric systems is the lack of user acceptance, which can be influenced by factors such as privacy concerns and cultural considerations.
26. What is the term for the process of capturing and storing a user's biometric data in a database?
- Enrollment
- Verification
- Registration
- Authentication
The process of capturing and storing a user's biometric data in a database is called enrollment.
27. How does the concept of "cancellable biometrics" address privacy concerns in biometric systems?
- By canceling the use of biometrics
- By allowing users to easily cancel their enrollment
- By ensuring that biometric templates can be easily canceled or reissued in case of compromise
- By canceling the uniqueness of biometric characteristics
The concept of "cancellable biometrics" addresses privacy concerns by ensuring that biometric templates can be easily canceled or reissued in case of compromise.
28. What is the potential drawback of relying solely on biometric authentication?
- Lack of uniqueness
- Inability to remember
- Single point of failure
- Lack of user acceptance
The potential drawback of relying solely on biometric authentication is a single point of failure, as compromise of the biometric data could lead to unauthorized access.
29. What is the term for the process of converting a biometric template into an irreversible form for storage?
- Liveness detection
- Enrollment
- Hashing
- Biometric conversion
The process of converting a biometric template into an irreversible form for storage is called hashing.
30. How can organizations address the challenge of biometric template storage in case of a data breach?
- By avoiding the use of biometrics
- By implementing strong password policies
- By using secure transmission protocols and encryption for biometric data
- By ensuring biometric templates are stored in a reversible form
Organizations can address the challenge of biometric template storage in case of a data breach by ensuring biometric templates are stored in an irreversible form, making it difficult to reconstruct the original biometric data.
