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NEW QUESTION # 14
________is one of the most widely used enterprise blockchain frameworks applicable across different industries.
- A. Bitcoin
- B. Microsoft Azure
- C. Ethereum
- D. Hyperledger Fabric
Answer: D
Explanation:
Hyperledger Fabricis a widely used enterprise blockchain framework developed under the Linux Foundation's Hyperledger project. It is designed to support various industries by offering a modular architecture, which enables enterprises to create customized blockchain solutions that meet specific business requirements.
Key Details:
* Enterprise Application: Hyperledger Fabric is suitable for use cases requiring privacy and confidentiality, such as supply chain management, healthcare, and finance. It supports permissioned networks where only authorized participants can join.
* Modularity and Flexibility: Fabric's modular design allows organizations to plug in their preferred components for consensus, membership, and data storage. This makes it versatile across different industries and applications.
* Smart Contracts and Chaincode: Fabric supports smart contracts, called chaincode, which enable complex business logic to be executed on the blockchain, providing significant utility to enterprises.
As a result,A. Hyperledger Fabricis the correct answer, as it is a leading enterprise blockchain framework used across multiple sectors.
NEW QUESTION # 15
Distributed ledger technology or DLT is a word used to describe technologies which store, distribute and facilitate the exchange of value between users, either privately or publicly.
- A. Distributed Ledger Technology
- B. Cryptocurrency
- C. Consensus Mechanisms
- D. Blockchain
Answer: A
Explanation:
Distributed Ledger Technology (DLT)is the correct term used to describe technologies that store, distribute, and facilitate the exchange of value between users, either privately or publicly. DLT encompasses various types of systems, including blockchains, that operate in a decentralized manner to record and synchronize data across multiple locations.
Key Details:
* Definition of DLT: DLT is a digital ledger system that allows data to be stored across multiple nodes in a network. It ensures that all copies of the ledger are updated and synchronized, providing a secure and transparent way to record transactions without needing a centralized authority.
* DLT vs. Blockchain: While blockchain is a form of DLT, not all DLTs are blockchains. For example, Directed Acyclic Graphs (DAGs) and Hashgraphs are also types of DLTs but do not necessarily use blocks or chains to organize data.
* Private and Public Implementations: DLTs can be permissioned (private) or permissionless (public), enabling various use cases from enterprise solutions to decentralized public networks.
Therefore,B. Distributed Ledger Technologyis the correct answer, as it broadly defines the technology for storing and distributing data across decentralized networks.
NEW QUESTION # 16
________is used to split up the tasks into multiple chunks that are then processed by multiple nodes.
- A. Fragmenting
- B. Partitioning
- C. Sharding
- D. Parsing
Answer: C
Explanation:
Shardingis a scalability technique that splits tasks or data into smaller, more manageable pieces called
"shards." These shards are then processed in parallel by multiple nodes in a network. By dividing the workload, sharding can significantly enhance the efficiency and speed of blockchain networks, which is especially beneficial for handling large transaction volumes and complex computations.
Key Details:
* Purpose of Sharding: The main goal of sharding is to address blockchain scalability issues. By enabling the network to process transactions and data in parallel, it reduces the load on individual nodes, thus increasing the overall throughput of the blockchain.
* How Sharding Works: In a sharded blockchain, each node only needs to process a portion of the total data rather than every single transaction on the network. Each shard is responsible for a subset of data and transactions, and only nodes within a particular shard need to validate its transactions.
* Relevance in Blockchain: Sharding is crucial in large-scale blockchain networks like Ethereum, where high transaction volumes can lead to congestion. Ethereum 2.0, for example, incorporates sharding as a core feature to improve its scalability and transaction processing capacity.
Sharding is, therefore, the correct answer, as it directly refers to the method of dividing tasks for parallel processing in a distributed environment.
NEW QUESTION # 17
______is intended to provide a foundation for the development of blockchain solutions with a modular architecture.
- A. FABRIC
- B. Sawtooth
- C. Hyperledger Composer
- D. IROHA
Answer: A
Explanation:
Hyperledger Fabricis designed to provide a foundation for developing blockchain solutions with a modular architecture. Fabric, a project under the Hyperledger umbrella by the Linux Foundation, offers flexibility through its pluggable components, enabling enterprises to tailor blockchain networks according to their specific requirements.
Key Details:
* Modular Architecture: Hyperledger Fabric supports modular plug-ins for various functions, including consensus, identity management, and privacy settings. This allows organizations to customize the blockchain to suit their operational needs.
* Permissioned Network: Fabric is a permissioned blockchain, meaning that it restricts network participation to authorized entities, which is ideal for enterprise use cases that require confidentiality and controlled access.
* Enterprise-Grade Features: Fabric's architecture is well-suited for complex business processes, providing features like private data collections, which allow subsets of participants to create private channels for transactions.
Thus,B. FABRICis the correct answer, as it is specifically developed to support modular, enterprise-grade blockchain solutions.
NEW QUESTION # 18
How many bitcoin are available?
- A. 21 million
- B. It increases each year
- C. 1 million
- D. It fluctuates with demand
Answer: A
Explanation:
Bitcoin has a fixed supply limit of21 millioncoins, as defined by its protocol. This cap is coded into Bitcoin's original protocol and cannot be altered without a consensus change, ensuring its scarcity and value proposition as a "digital gold." Key Details:
* Fixed Supply: Bitcoin's supply limit is integral to its design, as it imposes a hard cap on the total number of coins that can ever be mined. This limited supply is one of the factors that gives Bitcoin its deflationary nature and potential as a store of value.
* Mining Schedule: New Bitcoins are released into circulation through mining rewards, which halve approximately every four years (in an event known as the "halving"). This gradually reduces the issuance rate until the maximum supply is reached around the year 2140.
* Difference from Other Cryptocurrencies: Unlike some cryptocurrencies that have flexible or inflationary supply models, Bitcoin's finite supply is a distinguishing feature that appeals to those concerned with long-term value preservation.
Therefore,D. 21 millionis the correct answer, as it accurately reflects the total number of Bitcoin that will ever exist.
NEW QUESTION # 19
Public blockchains most often use________ as a consensus mechanism.
- A. PoW
- B. PoB
- C. PoET
- D. PoS
Answer: A
Explanation:
Public blockchains most commonly useProof of Work (PoW)as their consensus mechanism, especially in well-established networks such as Bitcoin and, until recently, Ethereum. PoW is a protocol that relies on network participants (miners) solving complex mathematical problems to validate and add transactions to the blockchain. This process ensures the integrity and security of the network, as it requires substantial computational power and resources, making it difficult for any single entity to control the blockchain.
Key Details:
* Proof of Work (PoW): PoW, used primarily by Bitcoin, operates by having participants (often referred to as miners) compete to solve cryptographic puzzles. The first to solve the puzzle adds the next block of transactions to the blockchain and is rewarded with newly minted coins. This system is energy- intensive but is widely recognized for its security and resistance to tampering.
* Transition in Other Networks: While Ethereum initially used PoW, it transitioned toProof of Stake (PoS)in 2022 with Ethereum 2.0, due to PoS's lower energy requirements and increased scalability.
However, Bitcoin, the most prominent public blockchain, still relies on PoW.
* Other Consensus Mechanisms: Alternatives such asProof of Stake (PoS)andProof of Burn (PoB)are used by other blockchain networks that aim for different trade-offs in terms of energy efficiency, scalability, and security.Proof of Elapsed Time (PoET)is another mechanism mostly associated with permissioned (private) blockchains rather than public blockchains.
* Why PoW for Public Blockchains?: Public blockchains prioritize decentralization and security. PoW provides a robust way to achieve this, despite its high energy consumption. Its high level of security and historical success in Bitcoin's network often make it the go-to choice for public blockchains.
In summary, the dominance of PoW in public blockchains is due to its established security and proven track record, although PoS and other mechanisms are increasingly gaining popularity for their efficiency in newer blockchain projects.
NEW QUESTION # 20
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________.
- A. Registry as a money service business
- B. Submit reports to the SEC
- C. Maintain detailed records of all customers
- D. Report suspidous transactions
Answer: D
Explanation:
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.
NEW QUESTION # 21
_______is a word use to describe technologies which store, distribute and facilitate the exchange of value between users, either privately or publicly
- A. Ledger
- B. DAO
- C. Blockchain
- D. DLT
Answer: D
Explanation:
Distributed Ledger Technology (DLT)is a broad term used to describe technologies that store, distribute, and facilitate the exchange of value between users, either privately or publicly. DLTencompasses various types of ledgers, including blockchains, where data is replicated, shared, and synchronized across a distributed network.
Key Details:
* Definition and Scope: DLT refers to a digital system for recording transactions across multiple locations simultaneously. It allows for decentralized data management and reduces the need for a central authority to maintain a ledger.
* Private and Public Ledgers: DLT can be implemented in both private (permissioned) and public (permissionless) networks. In public DLT, anyone can participate, while private DLT restricts access to authorized participants only.
* Examples of DLT: Blockchain is one form of DLT, but other types include Directed Acyclic Graphs (DAGs) and Hashgraph. Each of these has unique mechanisms for data storage and consensus.
Therefore,C. DLTis the correct answer, as it is the term that broadly covers technologies used for the exchange and storage of value in distributed systems.
NEW QUESTION # 22
A________ is a blockchain where participants of the network are already known and trusted.
- A. Smart contract
- B. Permission less ledger
- C. Permissioned ledger
- D. Hyperledger Fabric
Answer: C
Explanation:
APermissioned ledgeris a blockchain where participants are known and trusted, and access to the network is restricted to authorized entities. Permissioned ledgers are commonly used in enterprise and consortium settings where privacy, compliance, and control over data are essential.
Key Details:
* Controlled Access: In a permissioned ledger, only pre-approved participants can validate transactions and participate in the consensus process. This model ensures that all network members are identified and trusted, which is ideal for environments requiring a higher level of control and privacy.
* Use Cases: Permissioned ledgers are widely used in industries such as finance, healthcare, and supply chain, where it's important to know and trust participants due to regulatory or operational needs.
* Contrast with Permissionless Ledgers: Unlike permissionless ledgers (such as Bitcoin), which allow anyone to join and participate in the network, permissioned ledgers restrict participation to entities that meet specific criteria.
Thus,A. Permissioned ledgeris the correct answer, as it describes a blockchain network where participants are known and trusted.
NEW QUESTION # 23
Self-executing computer programs which facilitate transaction automation and eliminates the need for intermediaries are called what?
- A. Distributed ledgers
- B. Smart contracts
- C. Bitcoin mining
- D. Cryptocurrencies
Answer: B
Explanation:
Smart Contractsare self-executing computer programs that automatically enforce, verify, and facilitate the terms of a contract when certain conditions are met. These programs run on blockchain networks and eliminate the need for intermediaries by automating transactions based on predefined rules coded into the contract.
Key Details:
* Automation and Trust: Smart contracts are crucial in blockchain technology because they enable trustless transactions, meaning parties can transact directly without relying on intermediaries. The code controls the execution, and transactions are transparent and irreversible.
* Use Cases: Smart contracts are foundational to decentralized finance (DeFi) applications, supply chain management, digital identity, and more. They facilitate various operations such as lending, borrowing, insurance, and automated asset transfers.
* Example in Ethereum: Ethereum popularized smart contracts by providing a platform with Turing- complete scripting capabilities. This allowed developers to create sophisticated decentralized applications that execute on the blockchain.
In conclusion,D. Smart contractsis the correct answer as it refers to the technology that automates transactions and eliminates the need for intermediaries.
NEW QUESTION # 24
_______implements the interledger protocol, which facilitates interoperability across different distributed and non-distributed ledger networks.
- A. Caliper
- B. Composer
- C. Cello
- D. Quit
Answer: D
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 # 25
A____does not result in a new chain and does not require client nodes to upgrade.
- A. Hard fork
- B. Dependent chain
- C. Side chain
- D. Soft fork
Answer: D
Explanation:
Asoft forkis a change to a blockchain protocol that is backward-compatible, meaning it does not result in the creation of a new chain and does not require all client nodes to upgrade. Nodes that do not upgrade can still participate in the network, although they may not have access to all new features introduced by the soft fork.
Key Details:
* Backward Compatibility: In a soft fork, updated nodes enforce the new rules, while non-updated nodes continue to follow the older protocol but remain part of the same blockchain. This contrasts with hard forks, where incompatibility leads to the creation of a new chain.
* Use Cases: Soft forks are commonly used to implement protocol upgrades or adjustments that do not fundamentally alter the structure of the blockchain, such as increasing block size limits or adding new features that are optional.
* Examples: An example of a soft fork is the Segregated Witness (SegWit) update on the Bitcoin blockchain, which was implemented to increase block capacity without splitting the chain.
Thus,B. Soft forkis the correct answer, as it refers to a backward-compatible update that does not require a new chain or mandatory upgrades from all nodes.
NEW QUESTION # 26
Is a Microsoft blockchain development platform that allows the creation of custom private blockchains.
- A. Corda
- B. Azure
- C. Sratis
- D. Fabric
Answer: B
Explanation:
MicrosoftAzureis a blockchain development platform that enables the creation of custom private blockchains.
Azure Blockchain Service provides tools and services that allow organizations to set up and manage consortium blockchain networks, customize smart contracts, and create tailored blockchain applications.
Azure supports multiple blockchain frameworks, includingEthereumandHyperledger Fabric, making it versatile for both private and public network needs.
Key Details:
* Azure Blockchain Service: This service facilitates the deployment of managed blockchain networks on the cloud, leveraging Azure's infrastructure to deliver scalability, security, and reliability for private and consortium blockchain applications.
* Private Blockchain Capabilities: As a private blockchain service, Azure allows businesses to operate their blockchain in a controlled, permissioned environment. This offers greater control over data and participants, making it ideal for enterprise use cases like supply chain management, finance, and legal contracts.
* Blockchain Framework Compatibility: Although Azure supports a variety of blockchain protocols, it primarily focuses on private blockchain deployments, allowing for detailed control over network participants and data visibility.
In summary, Microsoft Azure stands out as a flexible and comprehensive platform for private blockchain development, catering to enterprises with tailored solutions and extensive cloud-based services.
NEW QUESTION # 27
________can support up to 10-14 transactions per second.
- A. Zcash
- B. Bitcoin
- C. Ethereum
- D. Dapps
Answer: C
Explanation:
Ethereumcurrently supports a transaction throughput of approximately10-14 transactions per second (TPS)
. This transaction speed is a result of Ethereum's design, which balances decentralization and security, albeit at the cost of scalability. This TPS rate is consistent across the Ethereum network prior to its upgrade to Ethereum 2.0, which aims to increase scalability through sharding and Proof of Stake.
Key Details:
* Limitations of Current Throughput: Ethereum's TPS rate is due to limitations in its consensus mechanism (formerly Proof of Work, now Proof of Stake) and block size, which prioritize security over transaction speed.
* Comparison with Other Networks: Bitcoin, for example, supports around 3-7 TPS, while other networks like Solana or Binance Smart Chain support significantly higher TPS. Ethereum's TPS may increase as Ethereum 2.0 is fully implemented, which aims to improve its scalability.
* Impact on Decentralized Applications (DApps): Ethereum's transaction capacity impacts DApps running on the network, as higher usage can lead to congestion and increased transaction fees(gas fees).
The upcoming upgrades are intended to alleviate these issues and enhance performance.
Therefore,D. Ethereumis the correct answer, as it supports approximately 10-14 TPS in its current form.
NEW QUESTION # 28
According to a study be Deloitte, which of the following are benefits of blockchain for the insurance industry (pick two)?
- A. Supporting strategic initiatives
- B. Comprehensive interoperable health records
- C. Lower costs
- D. More efficient claims processing
Answer: C,D
Explanation:
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.
NEW QUESTION # 29
What is the primary way blockchain could help in the food industry?
- A. Making transaction ore transparent
- B. Eliminating food born illness
- C. Making transport safer
- D. Streamlining management
Answer: A
Explanation:
Blockchain can greatly benefit the food industry bymaking transactions more transparent. By recording each transaction in an immutable ledger, blockchain enables traceability, which is crucial for food safety, quality control, and ensuring that products meet regulatory standards.
Key Details:
* Traceability: Blockchain allows for the tracking of food products from farm to table. Each step in the supply chain can be recorded on the blockchain, providing consumers and regulators with transparent information about the origin and journey of food products.
* Improving Trust and Safety: With transparent transactions, stakeholders can quickly identify and address issues such as contamination, fraud, or mislabeling, which enhances food safety and consumer trust.
* Enhanced Efficiency: By reducing paperwork and enabling digital record-keeping, blockchain streamlines the process of verifying and sharing information about food products across various parties.
Thus,C. Making transactions more transparentis the correct answer, as it highlights blockchain's role in providing transparency in the food industry.
NEW QUESTION # 30
Which of the following are benefits of blockchain for financial services according to IBM ''Blockchain for Financial Services''?
- A. Faster settlement
- B. Streamlined regulations
- C. Automated compliance
- D. Increased customer base
Answer: A,C
Explanation:
According to IBM's "Blockchain for Financial Services", blockchain offers several benefits, including faster settlement and automated compliance. These features are critical in enhancing the efficiency and reliability of financial services.
Key Details:
Faster Settlement: Blockchain technology enables near-instantaneous settlement of transactions by eliminating the need for traditional intermediaries and reducing processing times, which can speed up transactions significantly compared to legacy systems.
Automated Compliance: Blockchain's transparency and immutability allow for the automatic recording and verification of regulatory requirements. Smart contracts can be used to enforce compliance rules in real-time, ensuring that transactions adhere to regulatory standards without manual intervention.
Impact on Financial Services: These benefits translate to reduced operational costs, improved transaction accuracy, and increased trust between parties, making blockchain an attractive solution for financial institutions.
Thus, A. Faster settlement and B. Automated compliance are the correct answers, as these are specific benefits of blockchain in financial services according to IBM.
NEW QUESTION # 31
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