CyberVista Cryptography and PKI Questions and Answers

Question 1

A security analyst needs to implement an encryption method that is fast, efficient for large amounts of data, and uses a single key for both encryption and decryption.
Which type of cryptography best meets these requirements?

Accepted Answer

Symmetric encryption

Answer

Asymmetric encryption

Answer

Hashing

Answer

Quantum cryptography

Question 2

In a Public Key Infrastructure (PKI), what is the primary role of a Certificate Authority (CA)?

Accepted Answer

To verify the identity of entities and issue digital certificates.

Answer

To encrypt and decrypt user data.

Answer

To generate and securely store users' private keys.

Answer

To create and maintain the Certificate Revocation List (CRL) exclusively.

Question 3

A software developer wants to ensure that the source code of an application has not been altered since it was created and to provide proof of its origin. Which cryptographic control should be used to achieve both data integrity and non-repudiation?

Accepted Answer

A digital signature

Answer

A symmetric key

Answer

A message digest

Answer

A digital certificate

Question 4

Which of the following hashing algorithms is now considered insecure and vulnerable to collision attacks, making it unsuitable for modern security applications like password storage?

Accepted Answer

MD5

Answer

SHA-256

Answer

SHA-3

Answer

Bcrypt

Question 5

A company is setting up an internal network and needs to issue certificates for its internal servers and devices. The company wants full control over the certificate issuance process and does not require public trust. Which PKI component should they implement?

Accepted Answer

A Private Certificate Authority

Answer

A Public Certificate Authority

Answer

A Registration Authority

Answer

A Validation Authority

Question 6

What is the fundamental difference between a digital signature and a digital certificate?

Accepted Answer

A digital certificate is used to prove ownership of a public key, while a digital signature is used to verify the integrity and authenticity of data.

Answer

A digital signature encrypts data, while a digital certificate hashes it.

Answer

A digital signature uses symmetric keys, while a digital certificate uses asymmetric keys.

Answer

A digital certificate is created by the user, while a digital signature is issued by a Certificate Authority.

A security analyst needs to implement an encryption method that is fast, efficient for large amounts of data, and uses a single key for both encryption and decryption.Which type of cryptography best meets these requirements?

A security analyst needs to implement an encryption method that is fast, efficient for large amounts of data, and uses a single key for both encryption and decryption.
Which type of cryptography best meets these requirements?