101Blockchain.net - Interactive Blockchain Learning

101Blockchain.net

Home
Basics
Basics Overview
Linked List Hashing Merkle Tree Data Formats
Cryptography
Cryptography Overview
Encryption Asymmetric Encryption Message Signing
Blockchain
Blockchain Overview
Hash Block Blockchain Distributed Blockchain Tokens
Bitcoin
Bitcoin Overview
Keys and Addresses Wallet Transaction Block
Quizzes
Interactive Book
HyperReads NEW
About
101blockchain Contact us

Blockchain Hash Quiz

Evaluate your knowledge of hashing in blockchain context

All Quizzes Start Lesson

Question 1

In blockchain, what happens to the hash if you change any data in a block?

The hash remains the same The hash changes completely Only part of the hash changes The hash becomes invalid

Question 2

What is the purpose of including the previous block's hash in a new block?

To reduce storage space To create a tamper-evident chain To encrypt the block To compress the data

Question 3

What is the nonce in blockchain mining?

The transaction data A number adjusted to find a valid hash The previous block's hash The timestamp of the block

Question 4

What does it mean when a blockchain requires a hash to start with multiple zeros?

The data is encrypted It increases mining difficulty The block is invalid It reduces block size

Question 5

If you modify a transaction in an old block, what happens?

Only that block's hash changes That block and all subsequent blocks become invalid The blockchain automatically corrects it Nothing, the change is accepted

🔒

Also on HyperReads

Access 101ai, playwithml, and 101blockchain in one place

✓ Track your progress

✓ One account for everything

✓ Complete all courses

Start Free Trial →

Blockchain Hash Quiz

More Questions Available

Also on HyperReads