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EC-COUNCIL 312-82 認定試験の出題範囲：
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EC-COUNCIL EC-Council Blockchain Fintech CertificationB|FC exam 認定 312-82 試験問題 (Q14-Q19):
質問 # 14
The Financial Action Task force defines virtual asset service providers as companies that (choose two):
正解：A、C
解説：
According to theFinancial Action Task Force (FATF),Virtual Asset Service Providers (VASPs)are entities or companies that facilitate activities related to virtual assets. Specifically, VASPs include businesses thatexchange virtual assets for fiat currencyandtransfer virtual assets. These activities are regulated to prevent money laundering, terrorist financing, and other illicit activities.
Key Details:
* Exchange of Virtual Assets for Fiat Currency: VASPs often act as intermediaries that enable the conversion between virtual assets (like cryptocurrencies) and traditional fiat currencies. This function is central to enabling liquidity and usability of cryptocurrencies within the traditional financial system.
* Transfer of Virtual Assets: VASPs may also provide services that involve the transfer of virtual assets from one user to another, which includes activities such as facilitating peer-to-peer transactions, wallet services, or custodial services.
* FATF Standards and Compliance: The FATF has established guidelines for VASPs to enhance transparency and ensure compliance with Anti-Money Laundering (AML) and Counter-Terrorist Financing (CTF) regulations.
Thus, the correct answers areC. Exchange virtual assets for fiat currencyandD. Transfer virtual assets, as these are the core activities defined for VASPs by the FATF.
質問 # 15
Which of the following are likely use cases for blockchain in the energy industry? (Select two.)
正解：C、D
解説：
Blockchain technology has significant potential in the energy industry, particularly inenergy tradingand smart power grids. By providing a transparent, decentralized, and secure platform for transactions, blockchain can facilitate peer-to-peer energy trading and improve the efficiency and reliability of smart grids.
Key Details:
* Energy Trading: Blockchain enables peer-to-peer energy trading where individuals and companies can buy and sell excess energy (such as solar or wind power) directly to each other. This decentralized model reduces the need for intermediaries and allows consumers to benefit from direct energy sales and purchases.
* Smart Power Grids: Blockchain can enhance smart grid systems by enabling real-time data sharing and automated decision-making. With blockchain, smart grids can securely record and share data related to energy production, consumption, and storage, thereby improving grid management, reducing waste, and optimizing energy distribution.
* Enhanced Transparency and Security: By recording all transactions in an immutable ledger, blockchain ensures transparency and security, reducing the risks of fraud and discrepancies in the energy market. This is especially beneficial in energy trading where trust and accurate record-keeping are essential.
Thus,Energy trading (B)andSmart power grids (D)are the most likely use cases for blockchain in the energy industry.
質問 # 16
What is a DEX
正解：D
解説：
ADecentralized Exchange (DEX)is a platform that allows users to trade cryptocurrencies directly with one another without the need for a central intermediary or custodian. On a DEX, trades are facilitated using smart contracts on a blockchain, which automate transactions and ensure transparency. This decentralized model allows for peer-to-peer trading, often providing users with greater privacy and control over their funds compared to centralized exchanges.
Key Details:
* Functionality of DEXs: DEXs enable users to connect their wallets and trade assets directly from their accounts. There is no central authority controlling the funds, reducing the risk of hacks and giving users full control over their private keys.
* Examples of DEXs: Popular DEXs include Uniswap, SushiSwap, and PancakeSwap, which are commonly built on blockchain networks like Ethereum and Binance Smart Chain. These platforms operate through automated market makers (AMMs) or order book systems, which facilitate trading without centralized management.
* Comparison with Centralized Exchanges (CEXs): Unlike centralized exchanges, which act as intermediaries and hold user funds, DEXs do not hold custody of funds. This reduces the risk of theft and enables users to trade directly from their wallets.
Therefore, the correct answer isC. A decentralized exchange that allows users to exchange cryptocurrency directly.
質問 # 17
When using __________ the chain of ownership is established by a chain of digital signatures as each owner signs when transferring ownership.
正解：D
解説：
The UTXO (Unspent Transaction Output) model establishes a chain of ownership by using digital signatures.
In this model, each transaction consists of inputs (from previous UTXOs) and outputs (new UTXOs), and ownership is transferred by the current owner signing the transaction. This digital signature is then verified by the recipient, ensuring a secure and traceable chain of ownership.
Key Details:
Functionality of UTXO: UTXO is a fundamental part of Bitcoin's transaction model. When a transaction occurs, it consumes previous outputs as inputs, generating new UTXOs. Each UTXO can only be spent once, and ownership is verified through cryptographic signatures.
Chain of Ownership: The UTXO model inherently creates a clear and verifiable chain of ownership, as each output is signed by the current owner and used as input for future transactions, maintaining a continuous and transparent record of asset transfers.
Security through Digital Signatures: UTXO-based transactions rely on digital signatures to authenticate and authorize asset transfers, ensuring that only the rightful owner can initiate a transaction.
Thus, D. UTXO is the correct answer, as it accurately describes the model where ownership is established through a chain of digital signatures.
質問 # 18
A________represents a transfer of value from one address to another, Transaction in a blockchain network can be defined also as a record of an event or the ''transfer of value from one account to another''
正解：D
解説：
In blockchain terminology, atransactionrepresents the transfer of value from one address to another. Each transaction is recorded on the blockchain as an immutable entry, often representing a movement of digital assets or a record of an event.
Key Details:
* Nature of Transactions: A blockchain transaction involves a digital asset or token being sent from one blockchain address (wallet) to another. The transaction is broadcast to the network, validated by nodes, and then recorded on the blockchain ledger.
* Transfer of Value: Blockchain transactions serve as proof of the transfer of value, which could represent cryptocurrency movement, digital asset exchange, or a specific record of an event, depending on the blockchain's purpose.
* Inclusion in Blocks: Each transaction is grouped into blocks, which are then cryptographically linked together, forming the blockchain. This ensures all transactions are secure, traceable, and verifiable.
Thus,D. Transactionis the correct answer, as it describes the fundamental concept of transferring value on a blockchain.
質問 # 19
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