ICT Year 11 - 40 Questions - REVISION for exam!

What is blockchain technology?

• Centralised control

• Decentralised trust (entity)

• Exclusive ownership

• Peer to Peer communication

In a centralised system, who typically holds control over the network?

• Network participants

• Government authorities

• Decentralized nodes

• Miners

What does a ledger in the context of blockchain refer to?

• A decentralised database

• A government document

• A private communication channel

• A centralised server

What does the term "immutable" mean in the context of blockchain records?

• Records that can be easily changed

• Records that cannot be altered or tampered with

• Records with centralised control

• Records with dynamic content

What characteristic of blockchain enhances trust in its data?

• Dynamic records

• Centralised control

• Immutable records

• Private ledger

What is the first block in a blockchain called?

• Genesis block

• Prime block

• Alpha block

• Inception block

What is the role of miners in a blockchain network?

• Record-keeping

• Block verification

• Centralised control

• Ledger maintenance

In blockchain, what does a hash function do?

• Secures private keys

• Converts data into a fixed-size string of characters

• Manages blockchain consensus

• Controls mining operations

What are the main components of a block in a blockchain?

• Miners and transactions

• Hash, data, hash of previous block

• Private key and public key

• Centralised ledger and decentralised nodes

What can be included in the data section of a block?

• Transaction details

• Smart contract code

• Digital signatures

• All of the above