What component on the blockchain maintains the "world state"?
Answer(s): C
Distributed Ledger manages the world state and the transaction log in the blockchain. The world state is defined as the state of all transactions on the Blockchain, where all nodes agree that all blocks on the Blockchain are at the same state. It implements three key attributes. It efficiently calculates the cryptographic hash of the entire dataset of each block. It efficiently transmits a minimal “delta” changes to the dataset, when a peer is out of sync and needs to “catch up”. It minimizes the amount of stored data required for each peer to operate.
When you are developing with Fabric Composer which of the following is true?
Answer(s): A
Hyperledger Composer is an open-source application development framework which simplifies the creation of Hyperledger Fabric blockchain applications, thus reducing the time and complexity of development. The tool aims at helping users to create blockchain applications based on Hyperledger Fabric without needing to know the low-level (Go Programming) details involved in blockchain networks.
Composer Modeling Language is an object-oriented modeling language that defines the domain model for a business network definition. The modeling language is saved as a ____________file.
Answer(s): E
Composer Modeling Language is an object-oriented modeling language that defines the domain model for a business network definition. The modeling language is saved as a .cto file.
Fabric Ledger has two specific parts. Select answer with the proper two parts.
Answer(s): B
Fabric Ledger has two parts: • State data: Representation of current state of the assets. Asset state data can be changed upon changes to the state of the data. • Transaction Logs: Record of all the transactions (in the order they are received) which modified the state data, and once the data is written it is immutable and cannot be changed.
In Hyperledger there are three distinct types of nodes. What are the three types of nodes? (Select three.)1. Client Node: That initiates the transaction2. Peer Nodes: Commits Transaction & keeps the data in sync across the ledger3. Ordered: They are the communication backbones and responsible for the distribution of the transactions.
Answer(s): A,B,E
In Hyperledger, all Nodes are NOT equal. There are three distinct types of nodes: 1. Client Node: That initiates the transaction 2. Peer Nodes: Commits Transaction & keeps the data in sync across the ledger 3. Ordered: They are the communication backbones and responsible for the distribution of the transactions
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