Bitcoin Blockchain Architecture and Network Transactions BFC Practice Questions (Page 4)

Questions 16–20

1. 16application · medium

   A privacy-conscious user asks a bitcoin consultant whether using a new address for each transaction makes their activity completely anonymous. What is the most accurate response?

   • AYes, because the network does not store IP addresses or any metadata about transactions.
   • BNo, because every address is registered with a government authority.
   • CNo, because all transactions are publicly visible on the blockchain, and patterns can reveal relationships between addresses.
   • DYes, because addresses are not linked to identities, so no one can trace the transactions.
   Reveal Solution Discussion Select an answer first
2. 17application · medium

   A bitcoin wallet is constructing a transaction that spends a UTXO worth 1.0 BTC. The transaction has one output of 0.9 BTC to the recipient. What happens to the remaining 0.1 BTC?

   • AIt is automatically donated to the miners as a fee.
   • BIt is burned and removed from the supply.
   • CIt is held in a pending state until the recipient claims it.
   • DIt is returned to the sender as a change output to a new address.
   Reveal Solution Discussion Select an answer first
4. 18foundation · easy

   What is the primary role of Bitcoin's scripting language (Script)?

   • ATo define the conditions under which a transaction output can be spent
   • BTo encrypt transaction data for privacy
   • CTo create smart contracts that run on the Bitcoin network
   • DTo manage the peer-to-peer network communication
   Reveal Solution Discussion Select an answer first
5. 19foundation · easy

   What does it mean that Bitcoin is pseudonymous?

   • AUsers' real identities are completely hidden and untraceable.
   • BUsers are identified by public addresses, not by real-world identities.
   • CUsers must register with a central authority to obtain a pseudonym.
   • DUsers' transactions are encrypted so only the sender and recipient can see them.
   Reveal Solution Discussion Select an answer first
6. 20expert · hard

   A Bitcoin wallet is creating a transaction with two inputs and one output. The user wants to minimize the fee while ensuring the transaction confirms in the next block. Which approach is most appropriate?

   • ASet the fee to the minimum relay fee to save money.
   • BSet the fee to zero because the transaction is small.
   • CUse a fixed fee of 0.0001 BTC regardless of transaction size.
   • DUse a fee rate that is at or slightly above the current median fee rate in the mempool.
   Reveal Solution Discussion Select an answer first