What type of DApp uses another blockchain such as Ethereum?
Correct Answer: C
AType II DAppis characterized by utilizing another blockchain, such as Ethereum, as its underlying platform. Type II DApps generally operate as protocols or platforms themselves and rely on a foundational blockchain (Type I) for their infrastructure. This categorization enables Type II DApps to leverage the security, decentralization, and functionality of the underlying blockchain while adding unique features or protocols. Key Details: * Relationship with Type I DApps: Type I DApps are foundational platforms with their own blockchain, such as Ethereum. Type II DApps are built on these foundational platforms, creating additional protocols or applications that depend on the Type I blockchain. * Examples of Type II DApps: Protocols like the ERC-20 token standard on Ethereum are examples of Type II DApps, as they rely on Ethereum's blockchain but provide their own set of functionalities that can be used by other applications. * Benefits of Using Existing Blockchains: By using established blockchains, Type II DApps benefit from existing infrastructure and security while extending the blockchain's capabilities. Therefore,C. Type IIis the correct answer, as it represents DApps built on another blockchain like Ethereum.
Question 12
Which of the following is a language for working with Ethereum?
Correct Answer: C
Solidityis the primary programming language used for developing smart contracts on the Ethereum blockchain. It is a statically typed, high-level language similar to JavaScript and C++, and it is specifically designed for creating contracts that run on the Ethereum Virtual Machine (EVM). Key Details: * Purpose of Solidity: Solidity was created by the Ethereum team to enable the development of smart contracts that automate the execution of blockchain-based applications. Its syntax is designed to be familiar to developers experienced in other programming languages, which helps in onboarding and learning. * Compatibility and Flexibility: As a Turing-complete language, Solidity allows for the development of complex smart contracts and decentralized applications (DApps) with conditional logic, loops, and more. It is widely used in the DeFi space and beyond. * Ethereum Test Networks: Other options listed, such asRinkebyandKovan, refer to Ethereum test networks where developers test smart contracts, but they are not languages themselves.Mistis an Ethereum wallet interface, not a programming language. Thus,C. Solidityis the correct answer, as it is the language specifically designed for working with Ethereum smart contracts.
Question 13
A________in a new chain and requires clients to upgrade in order to participate on the new blockchain.
Correct Answer: A
Ahard forkoccurs when there is a fundamental change in a blockchain's protocol, resulting in the creation of a new chain that is incompatible with the previous one. After a hard fork, nodes must upgrade to the new version of the blockchain's software to continue participating in the network. A hard fork can be used to implement new features, fix security issues, or change core aspects of the blockchain. Key Details: * Differences from Soft Forks: Unlike a soft fork, which is backward-compatible and allows nodes on the previous version to still participate, a hard fork splits the blockchain into two distinct paths, with the upgraded path requiring new software. * Examples: Notable hard forks include Bitcoin Cash from Bitcoin and Ethereum Classic from Ethereum. These forks occurred due to disagreements within the community on how to handle certain protocol changes, leading to the creation of separate blockchains. * Upgrade Requirements: Participants on the blockchain who wish to continue on the new chain after a hard fork must update their software. Those who do not upgrade remain on the original chain, which continues as a separate, incompatible blockchain. Thus, the correct answer isHard fork (A), as it directly refers to a blockchain split that requires client upgrades for participation.
Question 14
FinCEN requires any person engaging in the business of money transmission or the transfer of funds, including CVC, to (I) maintain an ''effective'' written anti-money laundering program reasonably designed to prevent the business from being employed to help the financing of terrorist activities and money laundering and________.
Correct Answer: A
FinCENrequires money transmitters and companies involved in virtual currency (CVC) transmission to report suspicious transactions as part of their anti-money laundering (AML) responsibilities. This is in addition to maintaining an effective AML program and registering as a money service business (MSB). Key Details: * AML Program: The program must be reasonably designed to detect and prevent the use of financial services for money laundering or terrorist financing. * Reporting Suspicious Activity: FinCEN mandates that companies must file Suspicious Activity Reports (SARs) for any transactions that appear to be potentially suspicious or indicative of illegal activities. * Regulatory Compliance: This requirement ensures that businesses adhere to federal regulations, contributing to a secure financial system by monitoring and reporting illicit activity. Therefore,A. Report suspicious transactionsis the correct answer, as this is a key requirement for companies under FinCEN's regulations regarding money transmission and virtual currencies.
Question 15
According to a study be Deloitte, which of the following are benefits of blockchain for the insurance industry (pick two)?
Correct Answer: A,D
According to studies conducted by Deloitte and other industry research, blockchain offers several benefits for the insurance industry, particularly inmore efficient claims processingandlower costs. Blockchain's capabilities in data immutability, transparency, and automation play key roles in streamlining insurance processes and reducing operational expenses. Key Details: * Efficient Claims Processing: Blockchain enables quicker verification and processing of claims by automating workflows through smart contracts. This reduces paperwork, minimizes errors, and speeds up the claims process, improving customer satisfaction. * Lower Costs: By reducing intermediaries and leveraging automation, blockchain lowers administrative costs. It minimizes the need for manual verification and fraud detection, which traditionally consume significant resources in the insurance industry. * Transparency and Fraud Reduction: Blockchain provides an immutable and transparent record of all transactions. This helps prevent fraud, as all stakeholders have access to the same data, reducing discrepancies and the need for extensive audits. In conclusion,A. More efficient claims processingandD. Lower costsare the correct answers, as these are key benefits of blockchain for the insurance industry identified in Deloitte's research.
