Bitcoin uses

a$.$

Proof of Work$($PoW$)$

b$.$

Proof of Stake $($PoS$)$

c$.$

Proof of Burn$($PoB$)$

d$.$

Proof of Capacity$($PoC$)$

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The blockchain is based on the protocol of

a$.$

central approach

b$.$

consensus approach

c$.$

dependant approach

d$.$

serial approach

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In which Consensus Algorithm,the Validators invest in coins?

a$.$

PoW

b$.$

PoB

c$.$

Delegated PoC

d$.$

PoS

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In which Consensus Algorithm,the coins are 'burned'?

a$.$

PoS

b$.$

PoW

c$.$

PoB

d$.$

PoC

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Sybil Attack is seen in

a$.$

Distributed systems

b$.$

client server systems

c$.$

peer$-$to$-$peer network

d$.$

master$-$slave network

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What is Hash?

a$.$

$32$ bit decimal number

b$.$

$64$ hexadecimal number

c$.$

$64$ bit decimal number

d$.$

$32$ bit hexadecimal number

Question $7$

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Proof of Work functions is

a$.$

Ethereum

b$.$

public key

c$.$

with validators

d$.$

Bitcoin

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The Nakamoto Consensus was created by

a$.$

Bill Gates

b$.$

Satoshi Nakamoto

c$.$

Steve Jobs

d$.$

Alan Turing

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Which consensus algorithm is the least energy efficient?

a$.$

Delegated Proof of Stake $($DPoS$)$

b$.$

Proof of Authority $($PoA$)$

c$.$

Proof of Space $($PoSpace$)$

d$.$

Proof of Work$($PoW$)$

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When was Ethereum's genesis block mined?

a$.$

$2013$

b$.$

$2015$

c$.$

$2018$

d$.$

$2009$

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What are the core components of blockchain architecture?

a$.$

Bitcoin and Cryptocurrency

b$.$

Encryption and Decryption Record

c$.$

Public Key and Private Key Record

d$.$

Node,Transaction, Block

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What is Proof of Burn?

a$.$

Data Burning

b$.$

Burning tokens

c$.$

consensus for burning the tokens

d$.$

check whether burn has occurred or not

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What is the difference between Proof$-$of$-$Stake and Proof$-$of$-$Work?

a$.$

PoW is Consensus algorithm while PoS is Consensus Mechanism

b$.$

PoW is used for security while PoS is used for privacy

c$.$

PoW used for data hiding while PoS is used for data cleaning

d$.$

PoW is used in financial transactions while PoS is used in computer network

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Each block of a Blockchain consists of which of the following?

a$.$

key code

b$.$

list of Transaction

c$.$

Hash code

d$.$

Value

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A competitive consensus algorithm that was developed because blockchains had difficulty meeting the transaction speed demands.Which consensus algorithm is this?

a$.$

Delegated Proof of Stake $($DPoS$)$

b$.$

Proof of Burn

c$.$

Proof of Stake $($PoS$)$

d$.$

Proof of Work $($PoW$)$

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The advantage of Proof of Elapsed Time$($PoET$)$ instead of Proof of Work$($PoW$)$ is $\_$

a$.$

PoET can often be used in a permissionless blockchain more easily than PoW

b$.$

PoET has generally lower transaction cost

c$.$

PoET is much secure than PoW

d$.$

PoET is much faster than PoW

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Blockchain enables self$-$sovereign identity.How does blockchain do this?

a$.$

It enables centralised third parties to offer easy$-$to$-$use and valid identity information.

b$.$

It enables each person to have exclusive control of their money, property and identity.

c$.$

It enables governments to effortlessly issue identities with advanced digital certificates.

d$.$

It enables only internet companies to offer world$-$class secure personal identity repositories.