Cryptography MCQs

TEST YOUR KNOWLEDGE WITH TOP MULTIPLE CHOICE QUESTIONS

#1. What is the primary purpose of cryptography in computer security?

A. Data Storage

B. Data Integrity

C. Data Confidentiality

D. Data Compression

E. Data Sorting

#2. Which encryption algorithm is symmetric and commonly used for securing data transmission?

A. RSA

B. AES

C. DES

D. SHA

E. HMAC

#3. What is a cryptographic hash function used for?

A. Data Encryption

B. Data Compression

C. Data Integrity

D. Data Sorting

E. Data Storage

#4. Which key is used for decryption in asymmetric cryptography?

A. Private Key

B. Public Key

C. Session Key

D. Master Key

E. Symmetric Key

#5. What does SSL stand for in the context of secure communication over the internet?

A. Secure Socket Layer

B. Secure System Language

C. Secure Server Link

D. Secure Software Library

E. Strong Security Level

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#6. Which type of attack involves intercepting and altering communication between two parties without their knowledge?

A. Man-in-the-Middle

B. DDoS

C. Phishing

D. Spoofing

E. Brute Force

#7. What is the primary purpose of a digital signature in cryptography?

A. Data Encryption

B. Data Integrity

C. Data Compression

D. Data Sorting

E. Data Authentication

#8. Which encryption algorithm is known for its use in securing wireless networks under the WEP standard?

A. AES

B. RSA

C. DES

D. RC4

E. SHA

#9. What is the main advantage of asymmetric cryptography over symmetric cryptography?

A. Faster computation

B. Longer key lengths

C. Simplicity of key management

D. Lower security level

E. No need for key exchange

#10. Which of the following is a common symmetric encryption algorithm used for securing messages?

A. Diffie-Hellman

B. RSA

C. ECC

D. AES

E. ElGamal

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#11. In public-key cryptography, what is the purpose of a public key?

A. Encryption

B. Decryption

C. Key Exchange

D. Authentication

E. Digital Signature

#12. What is the purpose of an initialization vector (IV) in encryption algorithms like AES?

A. Authenticity

B. Data Compression

C. Randomness

D. Key Generation

E. Data Integrity

#13. Which encryption algorithm is based on mathematical problems related to integer factorization?

A. RSA

B. DES

C. AES

D. HMAC

E. SHA

#14. What is the key length of the widely used AES-256 encryption algorithm?

A. 128 bits

B. 192 bits

C. 256 bits

D. 512 bits

E. 1024 bits

#15. What is the process of converting plaintext into ciphertext called in cryptography?

A. Decryption

B. Hashing

C. Encryption

D. Compression

E. Encoding

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#16. Which cryptographic algorithm is commonly used for secure digital signatures and key exchange protocols?

A. RSA

B. AES

C. DES

D. SHA

E. HMAC

#17. What is the primary purpose of a salt in password hashing?

A. Data Encryption

B. Data Integrity

C. Data Compression

D. Data Sorting

E. Password Security

#18. Which type of encryption uses the same key for both encryption and decryption?

A. Asymmetric

B. Symmetric

C. Public Key

D. Private Key

E. One-Time Pad

#19. What is the purpose of a nonce in cryptographic protocols?

A. Random number generation

B. Data Encryption

C. Data Compression

D. Data Integrity

E. Data Storage

#20. Which cryptographic algorithm is commonly used for secure email communication?

A. RSA

B. AES

C. DES

D. PGP

E. HMAC

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Results

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TEST YOUR KNOWLEDGE WITH TOP MULTIPLE CHOICE QUESTIONS

#1. What is the primary purpose of cryptography in computer security?

#2. Which encryption algorithm is symmetric and commonly used for securing data transmission?

#3. What is a cryptographic hash function used for?

#4. Which key is used for decryption in asymmetric cryptography?

#5. What does SSL stand for in the context of secure communication over the internet?

Related posts:

#6. Which type of attack involves intercepting and altering communication between two parties without their knowledge?

#7. What is the primary purpose of a digital signature in cryptography?

#8. Which encryption algorithm is known for its use in securing wireless networks under the WEP standard?

#9. What is the main advantage of asymmetric cryptography over symmetric cryptography?

#10. Which of the following is a common symmetric encryption algorithm used for securing messages?

Related posts:

#11. In public-key cryptography, what is the purpose of a public key?

#12. What is the purpose of an initialization vector (IV) in encryption algorithms like AES?

#13. Which encryption algorithm is based on mathematical problems related to integer factorization?

#14. What is the key length of the widely used AES-256 encryption algorithm?

#15. What is the process of converting plaintext into ciphertext called in cryptography?

Related posts:

#16. Which cryptographic algorithm is commonly used for secure digital signatures and key exchange protocols?

#17. What is the primary purpose of a salt in password hashing?

#18. Which type of encryption uses the same key for both encryption and decryption?

#19. What is the purpose of a nonce in cryptographic protocols?

#20. Which cryptographic algorithm is commonly used for secure email communication?

Related posts:

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