BLOCKCHAIN

BLOCKCHAIN

20 Qs

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BLOCKCHAIN

BLOCKCHAIN

Assessment

Quiz

others

Practice Problem

Hard

Created by

Yohana Gracia Naomi

Used 1+ times

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20 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following best describes blockchain technology?

A centralized database managed by a single entity.
A distributed ledger technology where data is stored across multiple nodes.
An encryption algorithm used for securing internet communications.
A type of cloud storage system for storing large datasets.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary purpose of consensus mechanisms in blockchain networks?

To achieve scalability by increasing the block size.
To ensure that all nodes in the network agree on the current state of the ledger.
To encrypt sensitive data stored on the blockchain.
To facilitate cross-border payments using digital currencies.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is NOT a characteristic of blockchain technology?

Transparency
Immutability
Centralization
DecentralizationAnswer:

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What role do miners play in the process of adding new blocks to the blockchain?

Validating transactions and adding them to the block.
Encrypting data stored in each block.
Deciding the transaction fees for each transaction.
Auditing the blockchain for security vulnerabilities.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which consensus mechanism is commonly used in the Ethereum blockchain?

Proof of Work (PoW)
Delegated Proof of Stake (DPoS)
Practical Byzantine Fault Tolerance (PBFT)
Proof of Authority (PoA)

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does a smart contract differ from a traditional contract?

Smart contracts are legally binding, while traditional contracts are not.
Smart contracts are self-executing and automated, while traditional contracts require manual enforcement.
Smart contracts are stored on a centralized server, while traditional contracts are stored on a blockchain.
Smart contracts can only be executed by computer programmers, while traditional contracts can be understood by anyone.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is NOT a potential application of blockchain technology?

Supply chain management
Digital identity verification
Social media platform
Voting systems

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