Eccouncil 312-82 Exam Questions

Hyperledger Fabric is 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. FABRIC is the correct answer, as it is specifically developed to support modular, enterprise-grade blockchain solutions.

A Type II DApp is a decentralized application that uses both the blockchain and protocol of a Type I DApp. Type I DApps are the foundational blockchain-based platforms, such as Ethereum, that operate with their own blockchain. Type II DApps build on these platforms, using the existing blockchain and protocol, but offering specific functionalities or services.

Key Details:

Type I DApps: These are fundamental blockchain platforms, like Bitcoin or Ethereum, which have their own blockchain and provide a foundation for other applications.

Characteristics of Type II DApps: Type II DApps leverage the infrastructure of Type I DApps but add additional functionality through smart contracts or protocols. For example, protocols such as ERC-20 tokens or ERC-721 NFTs are built on Ethereum and utilize Ethereum's underlying blockchain and consensus protocol.

Integration: By utilizing both the blockchain and protocol of a Type I DApp, Type II DApps inherit the security, decentralization, and features of the underlying Type I platform, which simplifies their development and ensures compatibility.

In summary, B. Using the blockchain and protocol of a type I accurately describes the categorization of Type II DApps.

The right to publish a new block is commonly determined by Proof of Work (PoW) in blockchain networks like Bitcoin. In PoW, network nodes, known as miners, compete to solve a cryptographic puzzle. The first node to successfully solve it gains the right to add a new block to the blockchain.

Key Details:

Proof of Work Mechanism: Miners perform computational work to solve a hash puzzle, which proves that they have expended effort. This process ensures that blocks are added in a way that is resistant to tampering and fraud.

Reward System: The miner who successfully publishes a new block receives a block reward (in Bitcoin, for example), incentivizing miners to participate in maintaining the blockchain network's security.

Alternative Mechanisms: Other consensus mechanisms, such as Proof of Stake (PoS), do not rely on computational work but rather on a node's stake or investment in the blockchain. However, in the context of traditional blockchain models like Bitcoin, PoW is the primary method for determining block publication rights.

Therefore, A. Nodes proof of work is the correct answer, as PoW is the standard method by which nodes earn the right to publish new blocks in many blockchain networks.

A Type II DApp is a decentralized application that uses both the blockchain and protocol of a Type I DApp. Type I DApps are the foundational blockchain-based platforms, such as Ethereum, that operate with their own blockchain. Type II DApps build on these platforms, using the existing blockchain and protocol, but offering specific functionalities or services.

Key Details:

Type I DApps: These are fundamental blockchain platforms, like Bitcoin or Ethereum, which have their own blockchain and provide a foundation for other applications.

Characteristics of Type II DApps: Type II DApps leverage the infrastructure of Type I DApps but add additional functionality through smart contracts or protocols. For example, protocols such as ERC-20 tokens or ERC-721 NFTs are built on Ethereum and utilize Ethereum's underlying blockchain and consensus protocol.

Integration: By utilizing both the blockchain and protocol of a Type I DApp, Type II DApps inherit the security, decentralization, and features of the underlying Type I platform, which simplifies their development and ensures compatibility.

In summary, B. Using the blockchain and protocol of a type I accurately describes the categorization of Type II DApps.

A Type II DApp is 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 II is the correct answer, as it represents DApps built on another blockchain like Ethereum.