Blockchain Technology (Basic) Quiz I

What does the block in the blockchain contain?

i. Transaction data.

ii. Hash Value.

iii. Block Number.

• 1. only i

  
  

• 1. only ii

• 1. only iii

• 1. More than one of the above 

What is a blockchain?

• 1. A blockchain is a centralized digital ledger consisting of records called blocks.

• 1. A blockchain is a decentralized, distributed, digital ledger consisting of records called blocks.

• 1. More than one of the above 

• 1. None of the above

Which of the following is not a blockchain component?

• 1. Ledger

• 1. Certificate authority

• 1. Wallet

• 1. Hash

What are the benefits of blockchain technology?

• 1. No hidden fees

• 1. Fraud control & Access levels

• 1. Security & Speed

• 1. All of the Above

What are the pillars of blockchain technology?

• 1. Transparency

• 1. Immutability

• 1. Decentralization

• 1. All of the Above

Where do you keep your cryptocurrency?

• Metamask E-Wallet

• Wallet

• Centralized Server

• Bank Acoount

What do you mean by Immutable Ledger?

• It is a type of server which holds the Centralized Data.

• It is a type Directory which holds the Data in Encrypted form.

• It is a type of Ledger which holds the data that cannot be change.

• It is a type of Ledger which holds the Data that can be Partially changed with some Consensus Protocol.

What is the Term Mining in Blockchain technology?

• It is Mathematical Calculation done by Miners.

• It can be verified by other peers which is connected in same Network.

• It is a Mechanism which can be done by only Admin of the Smart Contract.

• Only i & ii

What do you mean by Genesis Block?

• It is type of block which holds the Centralized Data.

• It is type of block which have nothing in Hash value.

• It is type of block which have unique Hash Value.

• It is type of Block which have alphabetical Hash value.

Is blockchain is Disruptive technology?

• Ture

• False

• Both

• None of these