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Blockchain Developer - Hyperledger Fabric
CBDH
BTA Certified Blockchain Developer – Hyperledger Questions and Answers

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Viewing page 4 out of 6 pages

Viewing questions 31-40 out of questions

Questions # 31:

What component on the blockchain maintains the "world state"?

Options:

Consensus Algorithm

Reputation Manager

Consensus Manager

Distributed Ledger

Answer

Explanation

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.

Questions # 32:

Which of the following blockchain key components state how the transactions will be confirmed?

Options:

Consensus algorithm

Shared Distributed Ledger

Encryption

Validity Rules

Answer

Explanation

Validity rules (validation) state how the user and the transactions will be validated. This is predetermined by the consensus algorithm.

Questions # 33:

The_______________is used to sign, verify, provision, and authenticate in Hyperledger Fabric

Options:

Membership Service Provider

Onboarder

Cryptographic generator

None of the above

Answer

Questions # 34:

Access to Hyperledger Fabric Business Network Application is granted based on the______of the participant

Options:

Identity

Role

Legality

Answer

Questions # 35:

In Hyperledger, each customer, participant, or vendor can have their own ledger on the blockchain This is called:

Options:

Independence

Channels

Chamcode

Isolationism

Answer

Questions # 36:

Exhibit.

Question # 36

The function displayed is called

Options:

On the instantiation of the chaincode

On the 3rd call to the chaincode

On every invocation of the chaincode

On the teardown of the chaincode

Answer

Questions # 37:

In Hyperledger Fabric there is three types of chaincode. (Select three.)

Options:

Private

Hybrid

Access Controlled

Consortium

Public

Compliant

Answer

A, C, E

Explanation

References:

Questions # 38:

Which of the following would NOT be true about what a smart contract(Chaincode) gives your organization?

Options:

Autonomy

Savings

Trust

Legal Assurance

Answer

Explanation

While smart contracts (Chaincode) can be written to complement or substitute for legal contracts, their legal enforceability is not yet agreed upon by all state governments

Questions # 39:

Which tool would you select to that would allow users to measure performance of a specific implementation with predefined use cases?

Options:

Hyperledger Caliper

Hyperledger Explorer

Hyperledger Cello

Hyperledger Quilt

Answer

Explanation

Caliper, a blockchain benchmark tool that allows users to measure performance of a specific implementation with predefined use cases, is in incubation status and was contributed by developers from numerous organizations.

Questions # 40:

The keyword is used if you do not want the resource to be instantiated while still used as a super type for the other resources of that type.