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NEW QUESTION # 12
What is a DEX
Answer: D
Explanation:
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.
NEW QUESTION # 13
These wallets contain randomly generated private keys and are also called just a bunch of key wallets.
Answer: C
Explanation:
Non-Deterministic Wallets, also known as"Just a Bunch of Keys" (JBOK)wallets, contain randomly generated private keys that are not derived from a single seed. In this type of wallet, each key is created independently and must be backed up individually, as there is no way to recover keys through a mnemonic seed phrase.
Key Details:
* Random Key Generation: Non-Deterministic wallets generate private keys independently, without a hierarchical or sequential structure. As a result, each key is standalone, and losing a key means losing access to the corresponding funds permanently.
* Backup Requirements: Since each key is unique and unrelated, Non-Deterministic wallets require separate backups for each key. This differs from Hierarchical Deterministic wallets, which can be restored using a single seed phrase.
* Use Case: These wallets were more common in the early days of cryptocurrency, but they are less favored today due to the convenience and recoverability provided by deterministic wallets.
In conclusion,C. Non-Deterministic Walletsis the correct answer, as it refers to wallets that contain randomly generated private keys and are known as JBOK wallets.
NEW QUESTION # 14
What is the primary benefit to patients of blockchain in the healthcare are industry?
Answer: A
Explanation:
The primary benefit of blockchain in the healthcare industry for patients istotal control over personal health records. Blockchain enables secure, decentralized storage of health data, allowing patients to control access to their information and share it with healthcare providers as needed.
Key Details:
* Data Ownership and Privacy: Blockchain gives patients the ability to own and manage their health records. They can grant or revoke access to different healthcare providers, ensuring that only authorized personnel have access to their data.
* Improved Security: Health records stored on a blockchain are encrypted and decentralized, making them resistant to tampering and unauthorized access. This enhances patient privacy and reduces the risk of data breaches.
* Interoperability and Accessibility: Blockchain facilitates seamless sharing of health records across different healthcare providers and systems, improving coordination and care continuity without compromising data integrity.
Therefore,B. Total control over personal health recordsis the correct answer, as it represents a significant advantage for patients in managing their healthcare information securely.
NEW QUESTION # 15
Which of the following are likely use cases for blockchain in the energy industry? (Select two.)
Answer: C,D
Explanation:
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.
NEW QUESTION # 16
_______implements the interledger protocol, which facilitates interoperability across different distributed and non-distributed ledger networks.
Answer: B
Explanation:
The answer is(C) Quilt.
Hyperledger Quilt is a Java implementation of the Interledger Protocol (ILP). ILP is designed to transfer value across different ledgers, whether they are distributed ledgers (like blockchains) or traditional non-distributed ledgers.
Here's why the other options aren't the best fit:
* Composer:Hyperledger Composer was a tool for building blockchain applications, but it has been deprecated.
* Cello:Hyperledger Cello aims to provide a modular blockchain platform, making it easier to deploy and manage blockchain networks.
* Caliper:Hyperledger Caliper is a benchmarking tool used to measure the performance of different blockchain implementations.
Quilt's primary function is to enable interoperability between different ledger systems, which is crucial for the broader adoption and integration of blockchain technology.
NEW QUESTION # 17
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