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Qn. Sets

Blockchain Questions Set 15:

Quiz Mode

Among the following hashing algorithms, which one is not used for Proof of Work?

CryptoNight

Blake

X-11

Clique

At what stage of the contract does the `winningProposal()` function produce a result?

Done Stage

Vote Stage

Init Stage

What is a dApp?

A Cryptocurrency Trading App

A type of Cryptocurrency

An App built with blockchain technology

A decentralized application

How is a digital signature verified?

Using Public Key Cryptography

Using CSRF Authentication

Using Two Factor Verification

Using Symmetric Key Cryptography

What is a Hardware Wallet?

It is a wallet which is not breakable and shockproof

It is a wallet which is strong

It is a physical device, which acts as a flash drive and stores your private keys

It is a wallet which is hard

After loading the BidderData.sol file in Remix, what buttons do you observe in the user interface at the bottom right of Remix?

bidAmount, eligible

No buttons are generated

bigAmount, eligible, minBid, name

bidAmount, eligible, name

An important characteristic of a decentralized network enabled by blockchain technology is that:

You hold the assets instead of the intermediaries

A central authority holds your assets

The EVM holds the assets for you

None of the above

What is Block Height?

It is defined as the height of blockchain firewall

It is defined as the number of blocks preceding it in the blockchain

It is defined as the number of private keys stored in the block

It is defined as the height of the block measured in meters

Base58 encoding scheme has fewer distinct symbols than Base64 encoding scheme to ______________ ambiguous characters.

eliminate

remove possibility of breaks in code because of characters like " and ;

reduce the complexity by removing 8 characters

make it easier for humans by eliminating ambiguous characters

What are watch-only addresses?

They are addresses which cannot be used for transactions

They are addresses used for watching Crypto Market secrets

They are public Bitcoin addresses which can be used to see all of the outgoing and incoming transactions

They are public Bitcoin addresses which are used for storing transaction fee

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Qn. Sets

Blockchain Questions Set 15:

Among the following hashing algorithms, which one is not used for Proof of Work?

Reveal Answer

At what stage of the contract does the winningProposal() function produce a result?

Reveal Answer

What is a dApp?

Reveal Answer

How is a digital signature verified?

Reveal Answer

What is a Hardware Wallet?

Reveal Answer

After loading the BidderData.sol file in Remix, what buttons do you observe in the user interface at the bottom right of Remix?

Reveal Answer

An important characteristic of a decentralized network enabled by blockchain technology is that:

Reveal Answer

What is Block Height?

Reveal Answer

Base58 encoding scheme has fewer distinct symbols than Base64 encoding scheme to ______________ ambiguous characters.

Reveal Answer

What are watch-only addresses?

Reveal Answer

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At what stage of the contract does the `winningProposal()` function produce a result?