C4 Cryptographic Principles

Question 1

What is the primary role of a hash function in blockchain technology?

Accepted Answer

To ensure data integrity

Answer

To encrypt emails

Answer

To store public keys

Answer

To send tokens

Question 2

What type of cryptography is used to secure cryptocurrency transactions?

Accepted Answer

Asymmetric cryptography

Answer

Symmetric encryption

Answer

Blockchain encryption

Answer

Secure hash tokens

Question 3

What is a digital signature in cryptocurrency?

Accepted Answer

A cryptographic validation of a transaction

Answer

A random password

Answer

A visual QR code

Answer

A form of ID verification

Question 4

Why are private keys important in blockchain systems?

Accepted Answer

To access and control wallet funds

Answer

To mine cryptocurrencies

Answer

To create smart contracts

Answer

To monitor blockchain analytics

Question 5

What happens if a user loses their private key in cryptocurrency?

Accepted Answer

Assets become permanently inaccessible

Answer

The system resets the wallet

Answer

They can retrieve it via customer service

Answer

It creates a duplicate key

Question 6

Which algorithm is used by Bitcoin for hashing?

Accepted Answer

SHA-256

Answer

MD5

Answer

AES-128

Answer

RSA-2048