Explore topic-wise InterviewSolutions in .

This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.

1.

In private blockchains, you can create your own tokens for transactions.

Answer»

In PRIVATE blockchains, you can create your own tokens for transactions.
Choose the correct option from below list
(1)TRUE
(2)False

Answer:-(1)True

2.

Which consensus algorithm requires a complex, computation intensive mathematical problem to be solved.

Answer»

Which consensus algorithm REQUIRES a complex, computation intensive MATHEMATICAL problem to be solved.
Choose the correct option from below list
(1)PBFT
(2)PROOF of WORK
(3)Proof of Identity
(4)Proof of Stake

Answer:-(2)Proof of Work

3.

The Proof of Elapsed Time (PoET) concept was developed by ______ in early 2016.

Answer»

The Proof of Elapsed Time (PoET) CONCEPT was developed by ______ in EARLY 2016.
Choose the CORRECT option from below list
(1)Intel
(2)IBM
(3)Apple Computers
(4)Microsoft

Answer:-(1)Intel

4.

A peer to peer network of autonomous computers is a ______.

Answer»

A PEER to peer NETWORK of autonomous computers is a ______.
CHOOSE the correct option from below LIST
(1)Client
(2)Super Computer
(3)Server
(4)Distributed System

Answer:-(4)Distributed System

5.

_____ relies on exchange of messages among nodes that follow a distributed protocol to come to an agreement.

Answer»

_____ RELIES on exchange of messages among nodes that follow a distributed protocol to come to an agreement.
Choose the correct option from below list
(1)Proof of STAKE
(2)Proof of Identity
(3)Proof of Work
(4)PBFT algorithm

Answer:-(4)PBFT algorithm

6.

Which release of Ethereum will have Proof of Stake Consensus algorithm.

Answer»

Which release of Ethereum will have Proof of Stake Consensus algorithm.
Choose the CORRECT option from below LIST
(1)Casper
(2)Serenity
(3)Constantinople
(4)Juniper

Answer:-(2)Serenity

7.

Which consensus algorithm requires the users to have a stake in the blockchain?

Answer»

Which consensus algorithm requires the users to have a stake in the blockchain?
Choose the CORRECT OPTION from below list
(1)Proof of ELAPSED TIME
(2)Proof of Identity
(3)Proof of Stake
(4)Proof of Work

Answer:-(3)Proof of Stake

8.

Decentralized platforms do not require information to pass through a single point.

Answer»

Decentralized PLATFORMS do not require INFORMATION to pass through a single point.
Choose the correct option from below LIST
(1)TRUE
(2)False

Answer:-(1)True

9.

Permissioned blockchains usually use PBFT algorithms.

Answer»

Permissioned BLOCKCHAINS usually use PBFT algorithms.
Choose the correct OPTION from below LIST
(1)TRUE
(2)False

Answer:-(1)True

10.

What is the total number of bitcoins that can ever exist?

Answer»

What is the total number of BITCOINS that can ever exist?
CHOOSE the CORRECT option from below list
(1)21 billion
(2)21 million
(3)100 million
(4)1 million

Answer:-(2)21 million

11.

What does C stands for in CAP theorem?

Answer»

What does C stands for in CAP theorem?
Choose the correct option from below LIST
(1)COMPUTATION
(2)Capacity
(3)CONSISTENCY
(4)Correct

Answer:-(3)Consistency

12.

Bitcoin is a public, permisionless blockchain.

Answer» BITCOIN is a PUBLIC, permisionless blockchain.
Choose the correct OPTION from below list
(1)False
(2)TRUE

Answer:-(2)True
13.

Consensus algorithms must be fault tolerant.

Answer»

Consensus algorithms must be FAULT tolerant.
Choose the CORRECT OPTION from below list
(1)TRUE
(2)False

Answer:-(1)True

14.

In ______ mechanism, the miner is selected based on reputation built over time.

Answer»

In ______ mechanism, the miner is selected based on REPUTATION built over time.
Choose the CORRECT option from below list
(1)Stake-based
(2)Reputation-based
(3)ELAPSED Time
(4)Power-based

Answer:-(2)Reputation-based

15.

Which style of programming is well suited for Smart Contract programming?

Answer»

Which STYLE of programming is well SUITED for Smart Contract programming?
Choose the CORRECT OPTION from below LIST
(1)Regular
(2)Defensive
(3)Modular
(4)Functional

Answer:-(2)Defensive

16.

Which of the following is a Leader election-based consensus mechanism?

Answer»

Which of the following is a Leader election-based consensus mechanism?
Choose the CORRECT option from below list
(1)PROOF of Work
(2)Proof of Stake
(3)Proof of Deposit
(4)Proof of Elapsed Time

Answer:-(1)Proof of Work

17.

_____ are a collection of transactions bundled together to be added to a blockchain.

Answer»

_____ are a COLLECTION of transactions bundled TOGETHER to be added to a blockchain.
Choose the correct option from below list
(1)BOXES
(2)Blocks
(3)Algorithms
(4)Nodes

Answer:-(2)Blocks

18.

_____ contains hash of previous block and all the important information required by the block.

Answer»

_____ contains hash of PREVIOUS block and all the IMPORTANT INFORMATION required by the block.
Choose the correct option from below LIST
(1)block header
(2)block metadata
(3)chain
(4)block footer

Answer:-(1)block header

19.

Which of these is a major limitation of blockchain technology?

Answer»

Which of these is a major limitation of BLOCKCHAIN TECHNOLOGY?
CHOOSE the correct option from below list
(1)Scalability
(2)Immutability
(3)Anonymity
(4)Decentralization

Answer:-(1)Scalability

20.

Miners are rewarded with tokens like bitcoins and ether for mining the blocks.

Answer» MINERS are rewarded with tokens like bitcoins and ether for mining the blocks.
Choose the CORRECT option from below list
(1)FALSE
(2)True

Answer:-(2)True
21.

Ether provides greater flexibility than Bitcoin does

Answer»

Ether PROVIDES greater flexibility than Bitcoin does
Choose the correct option from below LIST
(1)TRUE
(2)False

Answer:-(1)True

22.

_____ is a process of verifying transactions, bundling them into blocks, and adding those blocks to the blockchain.

Answer»

_____ is a process of verifying transactions, BUNDLING them into BLOCKS, and adding those blocks to the blockchain.
Choose the correct option from below list
(1)Coding
(2)DIGGING
(3)Filtering
(4)MINING

Answer:-(4)Mining