CRYPTO QUIZ – Expert Level 👌

1 - What does Proof of Stake allow compared to Proof of Work?

A) Reduce transaction speed

B) Reduce energy consumption

C) Increase mining

D) Eliminate network fees

2 - What does a "hash" represent in the blockchain? 🔗

A) A unique digital signature

B) A private key

C) A wallet

D) A unit of storage

3 - What is an “oracle” in a smart contract?

A) A type of wallet

B) A block validator

C) A system that provides external data to the blockchain

D) A security vulnerability

4 - What is the difference between a public and a private blockchain? 🗝️

A) Both are identical

B) The public blockchain is accessible to everyone

C) The private blockchain is open source

D) Only the public blockchain uses tokens

5 - What does a DAO do?

A) It’s an NFT platform

B) It’s a contract address

C) It’s a decentralized organization managed by smart contracts

D) It’s a staking protocol

6 - What is a “seed phrase” used for? 🌾

A) It encrypts an NFT

B) It’s a contract address

C) It allows restoring a wallet

D) It’s a staking protocol

7 - What does a blockchain bridge do? 🌉

A) It converts NFTs into tokens

B) It connects two blockchains to allow token transfers

C) It validates blocks

D) It protects against DDoS attacks