101Blockchain.net - Interactive Blockchain Learning

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Test your understanding of Merkle trees and their use in blockchain

All Quizzes Start Lesson

Question 1

What is a Merkle tree?

A type of database A binary tree of cryptographic hashes A sorting algorithm A data compression technique

Question 2

What is the root of a Merkle tree called?

Genesis hash Master hash Merkle root Top hash

Question 3

What happens when you change data in one leaf of a Merkle tree?

Only that leaf's hash changes The hashes change all the way up to the root The entire tree is rebuilt Nothing changes

Question 4

What is the main advantage of using Merkle trees in blockchain?

Faster transaction processing Efficient verification of data integrity Smaller block sizes Better encryption

Question 5

How many hashes do you need to verify a transaction in a Merkle tree with 8 transactions?

1 hash 3 hashes (log₂ 8) 7 hashes 8 hashes

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