Information Security Important Questions

BCA Eight Semester Information Security Important Questions Exams Preparations

Unit I: Overview of Computer Security

1. What is Information Security?
2. Explain fundamental security design principles.
3. Define the terms threats and attacks in terms of Information Security. Explain different types of security threats in detail.
4. What are security services/requirements? Explain with examples.
5. Explain Computer Security Strategy.
6. What is attack surface and attack tree?

Unit II: Cryptographic Algorithms

• Explain the concepts of Vigenère and Rail Fence Ciphers in detail.
• What do you mean by transposition cipher? Decrypt the cipher text UIESTNVRIY using the Rail Fence cipher with rail size 2.
• How key generation, encryption, and decryption are done in RSA? In a RSA cryptosystem, given p=5 and q=19, determine the private key, public key and perform encryption and decryption for the message m=4.
• What is a cryptosystem?
• What is Euler’s totient function? Find the multiplicative inverse of 87 in Z100 using the Extended Euclidean algorithm.
• What is an Abelian group? Find whether 561 is prime or not using the Miller-Rabin algorithm.
• Differentiate between block cipher and stream cipher.
• Explain Feistel Cipher Structure.
• Explain DES algorithm.
• Explain AES algorithm with structure.
• Define Groups, Rings, and Fields with examples.
• Perform modular arithmetic / polynomial division in Galois Fields.
• Compute 7^2019 mod 13 using Fermat’s theorem.
• Explain Diffie-Hellman Key Exchange.

Unit III: Message Authentication and Hash Functions

• Explain HMAC with its objectives.
• Explain the properties of hash functions. How is a hash value generated using the SHA-1 algorithm? Explain with a suitable diagram.
• What is message authentication? Why is it needed?
• Explain digital signatures and DSS approaches.
• Explain MD5 algorithm.

Unit IV: User Authentication

• What are the vulnerabilities of passwords? Explain different strategies used for the selection of effective passwords.
• What is Password aging?
• Explain the process of biometric authentication.
• What are user authentication principles?
• Explain remote user authentication.
• Explain two-factor authentication with example.

Unit V: Access Control

• Define access right.
• Explain the concept of a trust framework.
• What is the difference between Access Control List (ACL) and Access Control Matrix (ACM)?
• Explain Role-Based Access Control (RBAC) and Attribute-Based Access Control (ABAC).
• Identity, Credential, and Access Management (ICAM).

Unit VI: Malicious Software and Intrusion

• What is malicious software?
• How are worms different from Trojan horses?
• Describe honeypots with the types of honeypots that may be deployed.
• How can you say that an Intrusion Detection System (IDS) is the backbone for Information Security? Justify along with its categories.
• Explain virus classification and virus phases.
• Describe worm propagation model.
• Explain anomaly-based & signature-based Intrusion Detection System approaches.

Unit VII: Network Security

• Explain the terms SSL, TLS, and handshake protocol.
• Explain five services provided by the PGP protocol to secure email.
• What is IPSec? What are the benefits of IPSec? Explain the IPSec architecture in detail.
• Define firewall and explain its types.
• Explain S/MIME for secure email.

Unit VIII: Security Auditing

• What is a security audit? What is its importance?
• Explain the architecture of security auditing in detail.
• What is a security audit trail? What are requirements for security auditing?
• Explain logging functions and audit trail analysis.

Note: This list is for reference purposes only to help you prepare smartly and cover all critical areas of Information Questions. Always review your class notes, teacher guidelines, and syllabus coverage.

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