Data Encryption Quiz

Which cryptographic concept does public-key encryption rely on?

• A. Asymmetric encryption

• B. Symmetric encryption

• C. Hash functions

• D. Block ciphers

How does encryption contribute to image protection?

• A. By compressing the image file size

• B. By embedding watermarks into the image

• C. By altering the visual appearance of the image

• D. By encoding the image data to prevent unauthorized access

What does key expiration refer to in the context of data encryption?

• A. The process of permanently deleting encryption keys.

• B. The act of renewing encryption keys for enhanced security.

• C. The encryption of key expiration dates for added protection.

• D. The automatic deactivation of encryption keys after a specified period.

Which of the following is a common public-key encryption algorithm?

• A. AES

• B. RSA

• C. DES

• D. Triple-DES

What is the primary objective of encryption in data protection?

• A. To hide data from unauthorized access

• B. To increase data transmission speed

• C. To reduce storage requirements

• D. To enhance data visualization

In data encryption, what does the term "key length" refer to?

• A. The number of characters in a passphrase

• B. The physical size of the cryptographic key

• C. The strength of the encryption algorithm

• D. The duration for which the key is valid

Which cryptographic hash function is commonly used to create public key fingerprints?

• A. MD5

• B. SHA-1

• C. CRC32

• D. SHA-256

What is the primary purpose of a fingerprint in the context of public key encryption?

• A. To encrypt sensitive data

• B. To sign digital documents

• C. To compress files for storage

• D. To uniquely identify a user's public key

How are fingerprints generated from public keys?

• A. By hashing the public key using a cryptographic algorithm

• B. By compressing the public key data

• C. By digitally signing the public key

• D. By encrypting the public key

What role do key servers play in the use of public keys?

• A. They encrypt messages for secure transmission.

• B. They store and distribute public keys.

• C. They generate digital signatures.

• D. They compress data for storage.