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Blockchain CBSA - BTA Certified Blockchain Solution Architect

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Total 229 questions

A chaincode package that was signed at creation can be handed over to other owners for inspection and signing in Hyperledger.

Is it true that the workflow supports out-of-band signing of chaincode package?

A.

TRUE

B.

FALSE

Without 100% autonomy, blockchain software and networks would serve little purpose.

A.

FALSE

B.

TRUE

The CA (Fabric CA by default) issues a ______________ to each member (organization or individual) that is authorized to join the network.

A.

rootCert

B.

tCert

C.

eCert

D.

NodeCert

All blockchain networks and systems require autonomous on-chain code in order to process transactions.

A.

FALSE

B.

TRUE

To prevent duplicate addresses/accounts from being generated on the same blockchain network, the input of the hash function that generates the address:

A.

Should never be plain text

B.

Should always be numerical

C.

Should first be encrypted

D.

Should contain enough entropy or randomness

Public blockchains can alter the blockchain ledger by:

A.

Creating a hard fork of the blockchain data, tooling and/or software

B.

Achieving community consensus via a Smart Contract to update the ledger

C.

Re-hashing the blocks from the total block height down to the genesis block

D.

Blockchain ledgers are immutable and can never be altered

If a product’s requirements call for public autonomous on-chain code, only using open source code, using cryptographic tokens, and allowing its users the ability to earn tokens, this product should be launched on the Ethereum blockchain.

A.

FALSE

B.

TRUE

Blockchain provenance is defined as _______________?

A.

Information sent to the blockchain and written to the blockchain.

B.

Recording the history of data, from its last block to various stages of the data lifecycle

C.

Recording the history of data, from its inception to various stages of the data lifecycle.

D.

Once a transaction has been written and committed to the ledger it cannot be changed.

The reason that cryptocurrencies such as Bitcoin, Ethereum and Litecoin can be exchanged one with another is due to the fact that they all operate on the same blockchain network

A.

FALSE

B.

TRUE

When you considering developing and running dAPPS in Ethereum its important to understand that Gas and Ether are decoupled for price stability. Is this True or False?

A.

True

B.

False