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Consider the following scenario: A solo app developer wants to create their own cryptocurrency and build a blockchain based that allows users to buy and sell second-hand items with that cryptocurrency from each other. Before the transaction is considered complete, the purchaser must put the funds in an escrow service and the sender must enter the courier tracking number into that same escrow. Time is of the essence and this developer doesn’t want to worry about networking of infrastructure. This app must be fully autonomous or “decentralized”.
Which architecture would best solve the product need?
Your customer is an enterprise that is focused on financial sectors.
What type of blockchain would this customer likely want specified for their enterprise?
Chaincode is a decentralized transactional program, running on the validating nodes. As with every chaincode, it implements the ____________________ in particular, Init and Invoke functions.
What does is actually implemented?
In Hyperledger there are three distinct types of nodes.
What are the three types of nodes? (Select three.)
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.
Your company working for is now considering the blockchain. They would like to perform a POC with R3 Corda. The CIO was reading about different blockchain consensus algos and would like to understand what type of consensus algos is used with Corda.
What is the best answer?
The Hyperledger Fabric business network is divided into three categories.
What are the three categories? (Select three.)
Which of the following enterprise blockchains have a pluggable framework consensus algo? (Select two.)
Proof of Stake based blockchain systems use what design to permit valid write transactions?
What type of encryption is shown below and is commonly used in blockchain cryptography?
Which of these reasons is a good reason to choose a conventional database over blockchain to store application data?
Which of following scenarios and datasets would be best suited to be utilized by a blockchain solution?
Which is the following is the metaphor that describes a logical dilemma that plagues many computer networks?
In common blockchain design, identity and transaction approval is possible through:
In Hyperledger Fabric chaincode runs in a secured Docker container isolated from the endorsing peer process?
In common blockchain design, which data structure is used to create a lightweight digital fingerprint of all the transactions within a block?
The ____________of the tree is the topmost node and hence this tree is represented upside down. The bottommost nodes are called as ________nodes. Each node is simply a cryptographic hash of a transaction.
In the above diagram, Transaction A,B, C,C from the leaves of the tree. Select one.
Chaincode Services uses Docker to host (deploy) the chaincode without relying on any virtual machine or computer language.
What would be the main reason or best reason that Hyperledger chose containers over virtual machines?
You have flown to NYC to have a discussion with a technical executive of a too big to fail bank. You are having a discussion about blockchain algos and the customer is asking what are some disadvantages of using a POW algo?
R3 Corda does not organize time into blocks. What does Corda actually perform and use?
Which factor influences the gas cost to deploy a Smart Contact on the Ethereum blockchain?
A product’s supply chain data is stored on blockchain. Only members of the product supply chain can write announcements to the blockchain but any consumer can query this data in a store to learn more about the product they want to buy. This is an example of a ____/____ blockchain.
You are currently consulting with an organization that ships widgets overseas. They would like to implement a Hyperledger Fabric and would like to know about how to use cryptocurrencies with Hyperledger Fabric.
What is the best answer?
TESTED 25 Apr 2024