Blockchain Structure and Concepts Quiz

What component of a blockchain block ensures the chronological order of blocks?

• Merkle root

• Timestamp

• Nonce

• Previous hash

In a typical block structure, what contains the summary of all transactions?

• Block height

• Hash pointer

• Merkle root

• Nonce

The structure of a block in a blockchain primarily includes:

• Only the data section

• Only the header

• Header and list of transactions

• Only the hash of the previous block

What helps achieve consensus on the next valid block?

• Hash of the genesis block

• Nonce and proof-of-work

• Block height

• Timestamp

The hash of the previous block is stored in:

• The transaction data

• The Merkle root

• The block header

• The block footer

What is the primary purpose of the block structure?

• Distribute tokens

• Organize transactions

• Identify nodes

• Create wallets

What element in the block header ensures immutability by linking to the previous block?

• Nonce

• Timestamp

• Previous block hash

• Transaction count

The nonce in a block header is used primarily for:

• Counting transactions

• Resolving forks

• Finding a valid hash for proof-of-work

• Generating keys

What does the Merkle root in a block header represent?

• Address of the miner

• Total gas fee

• Hash of all transactions

• Size of the block

Which of the following is not part of a standard block header?

• Timestamp

• Nonce

• Merkle root

• Wallet address