Blockchain MCQ -2

Question 1

What is UTXO?

Accepted Answer

Unspent Transaction Output

Answer

United Transaction Office

Answer

United Texan Xerox Organization

Answer

Union of Texas Operations

Question 2

Who invented Merkle Trees?

Accepted Answer

Ralph Merkle

Answer

Ralph Wiggum

Answer

Nick Szabo

Answer

Vitalik Buterin

Question 3

What is a hash function?

Accepted Answer

Takes an input of any length and returns a fixed-length string of numbers and letters

Answer

A fork

Answer

UTXO

Answer

Gas

Question 4

What does IPFS stand for?

Accepted Answer

Interplanetary Filing System

Answer

Inter Filing System

Answer

Internet Play Store

Answer

Internet Platform for Storage

Question 5

What is a Dash Masternode?

Accepted Answer

A node that provides additional supervisory network services

Answer

Two nodes sharing resources

Answer

A single node that runs the whole network

Answer

Master of all Dash nodes

Question 6

What characteristic makes Blockchain tamper-proof?

Accepted Answer

Immutability

Answer

VPN

Answer

Cryptocurrency

Answer

Servers

Question 7

What is the name of the research paper that brought Bitcoin to the world?

Accepted Answer

White Paper

Answer

Black Paper

Answer

Yellow Paper

Answer

Green Paper

Question 8

Bitcoin uses UTXO, Ethereum uses:

Accepted Answer

Account Balance

Answer

Double spend

Answer

UTXO

Answer

Ether

Question 9

What are sidechains?

Accepted Answer

Any mechanism that allows tokens from one blockchain to be securely used within a completely separate Blockchain

Answer

Another term for a hash function

Answer

Smart Contracts that have forked off the main blockchain

Answer

A parallel network running adjacent to the main Blockchain network for additional security

Question 10

What is a Lite Client?

Accepted Answer

Allows you to interact with the Blockchain without downloading the whole Blockchain

Answer

A type of Cryptocurrency

Answer

A platform to develop DAPPS

Answer

A server

Question 11

True or False: Blockchain is the same as Bitcoin.

Accepted Answer

False

Answer

True

Answer

True or False: Blockchain is the same as Bitcoin.A. TrueB. False

Question 12

When a record is on a Blockchain, who can access it?

Accepted Answer

Multiple people simultaneously.

Answer

One person at a time.

Answer

Only the people involved in the transaction

Question 13

Once records are submitted on a Blockchain, can they be altered?

Accepted Answer

No – they cannot be altered

Answer

Yes – the parties can go back in and alter them at any time.

Answer

Yes – but only within a certain time frame.

Question 14

Is it possible to program a Blockchain to record transactions automatically?

Accepted Answer

Yes

Answer

No

Question 15

Are Blockchain fully public?

Accepted Answer

It depends

Answer

Yes

Answer

No

Question 16

What is the maximum number of bitcoins that can be created?

Accepted Answer

21 million

Answer

16 million

Answer

100 million

Answer

There is no maximum

Question 17

Which of the following is a now-defunct Bitcoin exchange?

Accepted Answer

Mt Gox

Answer

Bit Box

Answer

Mt Fox

Answer

Ft Nox

Question 18

What is the process of creating new bitcoins popularly known as?

Accepted Answer

Mining

Answer

Finding

Answer

Panning

Answer

Sourcing

Question 19

What was the highest the Bitcoin price ever reached on the CoinDesk Bitcoin Price Index?

Accepted Answer

$1,165

Answer

$1,113

Answer

$2,346

Answer

$984

Question 20

When did bitcoin’s creator publish a whitepaper introducing the digital currency?

Accepted Answer

2008

Answer

2007

Answer

2009

Answer

2010

Blockchain MCQ -2 Software Development Tutorial MCQs & solutions - Free

MCQ Practice Test & Solutions: Blockchain MCQ -2 (20 Questions)