GSEC Cryptography and PKI Quiz

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3. What does a Registration Authority (RA) do in a PKI system?

Issues digital certificates

Verifies applicant identity before certificate issuance

Encrypts all network traffic

Manages firewall policies

4. Which encryption standard replaced DES and is now widely used for securing sensitive data?

3DES

AES

RC4

Camellia

5. True or False: A private key should be shared with trusted third parties to ensure backup and recovery.

True

False

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7. The Diffie-Hellman key exchange allows two parties to establish a shared secret over an insecure channel. What is this shared secret used for?

Direct message encryption

Session key generation

Digital signature creation

Certificate issuance

8. What is a Certificate Revocation List (CRL) used for?

To list certificates that are no longer valid

To encrypt sensitive data

To generate new encryption keys

To authenticate users

9. Which of the following is NOT a symmetric encryption algorithm?

DES

3DES

Blowfish

RSA

10. True or False: Elliptic Curve Cryptography (ECC) provides equivalent security to RSA with smaller key sizes.

True

False

11. Which encryption algorithm uses a single shared key for both encryption and decryption?

RSA

AES

ECC

Diffie-Hellman

12. A digital signature provides which security properties?

Confidentiality only

Authentication and non-repudiation

Encryption only

Key distribution only

13. Which protocol is commonly used to establish secure encrypted connections over the internet?

HTTP

FTP

TLS/SSL

SMTP

14. What is the primary role of a Certificate Authority (CA) in PKI?

To issue and sign digital certificates

To encrypt all user data

To manage firewall rules

To monitor network bandwidth

15. Which hash algorithm produces a 256-bit output?

MD5

SHA-1

SHA-256

RIPEMD-160

16. True or False: The RSA algorithm is based on the difficulty of factoring large prime numbers.

True

False

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18. Which of the following is a component of Public Key Infrastructure?

Certificate Authority (CA)

Registration Authority (RA)

Certificate Revocation List (CRL)

All of the above

19. In asymmetric cryptography, the key is kept secret while the key is distributed publicly.

Public; private

Private; public

Master; session

Shared; symmetric

20. What is the primary purpose of a digital certificate in PKI?

To encrypt all network traffic

To bind a public key to an entity's identity

To generate random encryption keys

To replace password authentication

GSEC Cryptography and PKI Quiz

1. What does PKIX stand for?

2.

What first name or nickname would you like us to use?

2. The process of converting plaintext into ciphertext using a key is called ____.

3. What does a Registration Authority (RA) do in a PKI system?

4. Which encryption standard replaced DES and is now widely used for securing sensitive data?

5. True or False: A private key should be shared with trusted third parties to ensure backup and recovery.

6. In PKI, X.509 is a standard for what type of digital document?

7. The Diffie-Hellman key exchange allows two parties to establish a shared secret over an insecure channel. What is this shared secret used for?

8. What is a Certificate Revocation List (CRL) used for?

9. Which of the following is NOT a symmetric encryption algorithm?

10. True or False: Elliptic Curve Cryptography (ECC) provides equivalent security to RSA with smaller key sizes.

11. Which encryption algorithm uses a single shared key for both encryption and decryption?

12. A digital signature provides which security properties?

13. Which protocol is commonly used to establish secure encrypted connections over the internet?

14. What is the primary role of a Certificate Authority (CA) in PKI?

15. Which hash algorithm produces a 256-bit output?

16. True or False: The RSA algorithm is based on the difficulty of factoring large prime numbers.

17. What does PKI stand for in the context of cryptography?

18. Which of the following is a component of Public Key Infrastructure?

19. In asymmetric cryptography, the key is kept secret while the key is distributed publicly.

20. What is the primary purpose of a digital certificate in PKI?

GSEC Cryptography and PKI Quiz

1. What does PKIX stand for?

2.

What first name or nickname would you like us to use?

2. The process of converting plaintext into ciphertext using a key is called ____.

3. What does a Registration Authority (RA) do in a PKI system?

4. Which encryption standard replaced DES and is now widely used for securing sensitive data?

5. True or False: A private key should be shared with trusted third parties to ensure backup and recovery.

6. In PKI, X.509 is a standard for what type of digital document?

7. The Diffie-Hellman key exchange allows two parties to establish a shared secret over an insecure channel. What is this shared secret used for?

8. What is a Certificate Revocation List (CRL) used for?

9. Which of the following is NOT a symmetric encryption algorithm?

10. True or False: Elliptic Curve Cryptography (ECC) provides equivalent security to RSA with smaller key sizes.

11. Which encryption algorithm uses a single shared key for both encryption and decryption?

12. A digital signature provides which security properties?

13. Which protocol is commonly used to establish secure encrypted connections over the internet?

14. What is the primary role of a Certificate Authority (CA) in PKI?

15. Which hash algorithm produces a 256-bit output?

16. True or False: The RSA algorithm is based on the difficulty of factoring large prime numbers.

17. What does PKI stand for in the context of cryptography?

18. Which of the following is a component of Public Key Infrastructure?

19. In asymmetric cryptography, the ____ key is kept secret while the ____ key is distributed publicly.

20. What is the primary purpose of a digital certificate in PKI?

19. In asymmetric cryptography, the key is kept secret while the key is distributed publicly.