Bitcoin Blockchain Architecture and Network Transactions BFC Practice Questions (Page 2)

Questions 6–10

1. 6foundation · easy

   What is the block reward in Bitcoin?

   • AThe total amount of bitcoin in circulation
   • BThe transaction fees collected by the miner
   • CThe amount of bitcoin that is burned in each block
   • DThe newly created bitcoins awarded to the miner who successfully mines a block
   Reveal Solution Discussion Select an answer first
2. 7foundation · easy

   How often does the Bitcoin block reward halve?

   • AEvery year on January 1st
   • BEvery 210,000 blocks (approximately every 4 years)
   • CEvery 100,000 blocks (approximately every 2 years)
   • DEvery 1,000,000 blocks (approximately every 19 years)
   Reveal Solution Discussion Select an answer first
4. 8foundation · easy

   What is the purpose of the 'scriptPubKey' in a Bitcoin transaction output?

   • AIt contains the signature of the recipient.
   • BIt specifies the amount of bitcoin being sent.
   • CIt defines the conditions under which the output can be spent.
   • DIt stores the transaction fee for miners.
   Reveal Solution Discussion Select an answer first
5. 9application · medium

   A bitcoin wallet broadcasts a transaction with a fee of 1 sat/vB. The mempool is congested with many higher-fee transactions. What is the most likely outcome for this transaction?

   • AIt will remain in the mempool until the congestion clears or a miner includes it, which may take longer than usual.
   • BIt will be rejected by full nodes because the fee is too low to be valid.
   • CIt will be dropped immediately because the fee is below the network's minimum relay fee.
   • DIt will be included in the next block because all valid transactions are mined in order of arrival.
   Reveal Solution Discussion Select an answer first
6. 10foundation · easy

   After a Bitcoin transaction is broadcast to the network, what is the typical next step before it is included in a block?

   • AIt is validated by nodes and placed in the mempool.
   • BIt is sent to the sender's bank for approval.
   • CIt is immediately added to the blockchain.
   • DIt is encrypted and stored in a central database.
   Reveal Solution Discussion Select an answer first