Blockchain Basics Week 1 Quiz Answer

Blockchain Basics Coursera Quiz Answer

About this Course

• This first course of the Blockchain specialization provides a broad overview of the essential concepts of blockchain technology – by initially exploring the Bitcoin protocol followed by the Ethereum protocol – to lay the foundation necessary for developing applications and programming. You will be equipped with the knowledge needed to create nodes on your personal Ethereum blockchain, create accounts, unlock accounts, mine, transact, transfer Ethers, and check balances.       

• You will learn about the decentralized peer-to-peer network, an immutable distributed ledger and the trust model that defines a blockchain. This course enables you to explain basic components of a blockchain (transaction, block, block header, and the chain) its operations (verification, validation, and consensus model) underlying algorithms, and essentials of trust (hard fork and soft fork). Content includes the hashing and cryptography foundations indispensable to blockchain programming, which is the focus of two subsequent specialization courses, Smart Contracts and Decentralized Applications (Dapps). You will work on a virtual machine image, specifically created for this course, to build an Ethereum test chain and operate on the chain. This hands-on activity will help you understand the workings of a blockchain, its transactions, blocks and mining.

• Main concepts are delivered through videos, demos and hands-on exercises.

WHAT YOU WILL LEARN

A learner will be able to recognize foundational concepts of blockchain, and apply these program concepts on the blockchain.

SKILLS YOU WILL GAIN

• Ethereum
• Cryptography
• Blockchains
• Bitcoin

Go to This Course

https://www.coursera.org/learn/blockchain-basics

Blockchain Basics Week 1 Quiz Answer

Week 1

Blockchain Defined

Week 1 ---- Quiz 1 Answer

Question 1)

Did Bitcoin enable a centralized or a decentralized system for the exchange of value?

• Centralized
• Decentralized

Question 2)

Validation, Verification, Immutable Recording, and _ lead to Trust and Security.

• Algorithms
• Tokens
• Coins
• Consensus

Question 3)

Who introduced the digital online cryptocurrency known as Bitcoin?

• Wei Dai
• Nick Szabo
• Satoshi Nakamoto
• Hal Finney

Question 4)

A blockchain enables peer-to-peer transfer of digital currency without any intermediaries such as banks. True or False?

• True
• False

_______________________________________________________________

Week 1 ---- Quiz 2 Answer

Question 1)

A block in a Blockchain has a header and ___.

• Inputs
• Bitcoins
• Digital Ledger
• Transactions

Question 2)

What does UTXO stand for?

• Unspent Trade Offer
• Unique Transaction Offer
• Unspent Transaction Output
• Unspent Transaction Xeroxed Output

Question 3)

A transaction generates new UTXOs for transferring the amount specified in the input UTXOs. True or False?

• True
• False

Question 4)

Miners are computers that execute __.

• operations defined by users
• operations defined by transactions
• operations defined by the blockchain protocol

_______________________________________________________________

Week 1 ---- Quiz 3 Answer

Question 1)

The algorithm for consensus in the Bitcoin blockchain is called ____protocol.

• Proof of Work
• Proof of Stake
• Proof of Worth
• Proof of Elapsed Time

Question 2)

Transaction confirmation is independently performed by all miner nodes. True or False?

• True
• False

Question 3)

Transaction 0 in every block in the bitcoin blockchain .

• does not have any input UTXO.
• is for paying the miner fees.
• is called the coinbase transaction
• All of the above.

Question 4)

In a public blockchain, a participant can join and leave the blockchain as and when they wish. True or False?

• True
• False

Blockchain Basics Week Coursera Answer

• Blockchain Basics Week 1 Quiz Answer

• Blockchain Basics Week 2 Quiz Answer

• Blockchain Basics Week 3 Quiz Answer

• Blockchain Basics Week 4 Quiz Answer