CCI - Certified Cryptocurrency Investigator Bitcoin Transactions and Mining Questions and Answers

Question 1

An investigator is analyzing a Bitcoin transaction that has been broadcast to the network but has not yet been included in a block.
In which of the following locations would the investigator most likely find this transaction?

Accepted Answer

The mempool of a Bitcoin node

Answer

The victim's hardware wallet

Answer

A centralized exchange's hot wallet

Answer

The Bitcoin genesis block

Question 2

A Certified Cryptocurrency Investigator is examining the rewards a miner received for successfully mining a new block. This reward is composed of two distinct components. Which of the following correctly identifies these two components?

Accepted Answer

The block subsidy (newly created bitcoin) and the transaction fees from the included transactions.

Answer

The block subsidy and a percentage of the network's total hash rate.

Answer

A fixed amount of newly minted bitcoin and a discretionary bonus from the mining pool.

Answer

Transaction fees and a reward from the developers for securing the network.

Question 3

An investigator is reviewing a series of transactions and notices that the fee paid for a $1 million transaction is the same as the fee for a $100 transaction. What is the primary factor that determines the cost of a Bitcoin transaction fee?

Accepted Answer

The transaction's data size in bytes and network congestion.

Answer

The monetary value of the Bitcoin being sent.

Answer

The reputation of the sending and receiving wallets.

Answer

The number of confirmations the transaction has received.

Question 4

A criminal organization attempts to disrupt the Bitcoin network by controlling over half of the network's mining power. They successfully reverse their own recent transactions, effectively spending the same bitcoins twice. What is this type of attack called?

Accepted Answer

A 51% Attack

Answer

A Sybil Attack

Answer

A Phishing Attack

Answer

A Dusting Attack

Question 5

The Bitcoin protocol includes a mechanism to ensure that, on average, a new block is added to the blockchain approximately every 10 minutes, regardless of changes in the total network hash rate. What is this self-regulating feature called?

Accepted Answer

The Difficulty Adjustment

Answer

The Halving

Answer

Proof-of-Stake Consensus

Answer

Segregated Witness (SegWit)

Question 6

Which of the following best describes an Unspent Transaction Output (UTXO) in the context of a Bitcoin investigation?

Accepted Answer

A specific, discrete amount of bitcoin that has been received but not yet spent, acting as an input for a future transaction.

Answer

A failed transaction that has been returned to the sender's wallet.

Answer

A type of cryptocurrency token used exclusively for paying transaction fees.

Answer

A transaction that has been flagged as suspicious by a blockchain analytics tool.

An investigator is analyzing a Bitcoin transaction that has been broadcast to the network but has not yet been included in a block.In which of the following locations would the investigator most likely find this transaction?

An investigator is analyzing a Bitcoin transaction that has been broadcast to the network but has not yet been included in a block.
In which of the following locations would the investigator most likely find this transaction?