What is a Blockchain?

What is a node?

A) A computer that verifies blockchain transactions

B) A central authority that controls the network

C) A type of cryptocurrency

What is a public blockchain?

A) A permissioned network where only certain users can access and participate

B) A permissionless network where anyone can access and participate

C) A type of cryptocurrency exchange

What does a block in the blockchain contain?

A) Cryptographic hash

B) Transaction information

C) Timestamp

D) All of the above

What are some of the key benefits of blockchain technology?

A) It's secure, trustless, and tamper-proof

B) It's controlled by a central authority and transactions can be reversed

C) It's private, permissioned, and efficient