Free CCI Blockchain Technology Questions and Answers

Question 1

What is a blockchain?

Accepted Answer

A decentralized digital ledger

Answer

A central database

Answer

A social media network

Answer

A type of cryptocurrency wallet

Question 2

What is the primary purpose of blockchain technology?

Accepted Answer

To record and verify digital transactions

Answer

To speed up internet access

Answer

To store images and videos

Answer

To host email servers

Question 3

What is a block in a blockchain?

Accepted Answer

A container of transaction data

Answer

A financial account

Answer

A security password

Answer

A peer-to-peer file

Question 4

What ensures the integrity of a blockchain?

Accepted Answer

Cryptographic hash linking blocks

Answer

Central authority approval

Answer

Paper backups

Answer

Manual timestamping

Question 5

What is a smart contract?

Accepted Answer

Code that executes agreements automatically

Answer

A physical contract

Answer

A legal document signed digitally

Answer

An encrypted email

Question 6

Which consensus mechanism is used by Bitcoin?

Accepted Answer

Proof of Work

Answer

Proof of Stake

Answer

Delegated Proof of Stake

Answer

Proof of Authority

Question 7

What is the benefit of decentralization in blockchain?

Accepted Answer

Greater transparency and resilience

Answer

Slower performance

Answer

Increased energy costs

Answer

Less data security

Question 8

Which data structure does a blockchain resemble?

Accepted Answer

Linked list

Answer

Binary tree

Answer

Circular array

Answer

Hash map

Question 9

Why is immutability important in blockchain?

Accepted Answer

To ensure records cannot be changed

Answer

To allow frequent edits

Answer

To enable encryption

Answer

To improve internet speed