Bitcoin Blockchain Quiz

The ______ is the waiting place for transactions before they enter the Bitcoin blockchain.

• memory stack

• memory pool

• temporary memory

• database

Which among the following record keeping model is used in Bitcoin Blockchain?

• UTXO model

• Account/Balance model

• ER model

• None of the above

Which of the following node type does not come under Bitcoin network?

• Full Node

• Lightweight Node

• Null Node

• Miner Node

Bitcoin is commonly abbreviated as ____.

• BTC

• BCT

• ETH

• B-Coin

Expand UTXO?

• Unauthorized Transaction Output

• Unused Transaction Exceptions

• Unspent Transaction Output

• Unspent Transaction Order

Which of the following is a lottery based consensus?

• PBFT

• RAFT

• Proof of Work

• None of the above

BFT is expanded as:

• Byzantine Fail Tolerance

• Byzantine Fault Tolerance

• Blockchain Fault Tolerance

• Blockchain Partition Tolerance

________ is a process by which an agreement is reached between different nodes in a network on the final state of data.

• Consensus

• Immutability

• Fault Tolerance

• Availability

Which of the following statement is true?

• PoET is a voting based consensus.

• PBFT is a voting based consensus.

• Proof of Stake is a voting based consensus.

• Proof of Work is a voting based consensus.

____ is a reputation based consensus algorithm?

• Proof of Stake

• Proof of Work

• Proof of Authority

• pBFT