Blockchain MCQ Questions And Answers

This section focuses on "Basics" of Blockchain. These Multiple Choice Questions (MCQ) should be practiced to improve the Blockchain skills required for various interviews (campus interviews, walk-in interviews, company interviews), placements, entrance exams and other competitive examinations.

1. A blockchain is a type of?

A. Object
B. Database
C. Table
D. View

View Answer


2. Blockchains store data in the form of?

A. line
B. circle
C. block
D. rhombus

View Answer


3. In Bitcoin case, blockchain is used in a __________way.

A. decentralized
B. centralized
C. Both A and B
D. None of the above

View Answer


4. Decentralized blockchains are immutable?

A. TRUE
B. FALSE
C. Can be true or false
D. Can not say

View Answer


5. A blockchain, originally block chain, is a growing list of records, called blocks, that are linked using?

A. Timestamp
B. hash
C. Merkle tree
D. Cryptography

View Answer


6. Who first proposed a blockchain-like protocol?

A. Stuart Haber
B. W. Scott Stornetta
C. David Chaum
D. Dave Bayer

View Answer


7. The first blockchain was conceptualized by a person (or group of people) known as Satoshi Nakamoto in?

A. 2005
B. 2008
C. 2006
D. 2004

View Answer


8. Which of the following statement is true about blockchain?

A. A blockchain is a decentralized, distributed, and oftentimes public, digital ledger consisting of records called blocks
B. A blockchain database is managed autonomously using a peer-to-peer network and a distributed timestamping server
C. A blockchain has been described as a value-exchange protocol.
D. All of the above

View Answer


9. Blocks hold batches of valid transactions that are hashed and encoded into a?

A.  merkle tree
B.  cryptographic hash
C. genesis block
D. temporary fork

View Answer


10. The block time is the average time it takes for the network to generate one extra block in the blockchain.

A. TRUE
B. FALSE
C. Can be true or false
D. Can not say

View Answer





Discussion


* You must be logged in to add comment.

NAVNEET VAISH
required answers