BTA Certified Blockchain Solution Architect (CBSA) Practice Test

Questions # 61:

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?

Options:

TRUE

FALSE

Questions # 62:

In its simplest form, user identity on a blockchain can be unique and secure:

Options:

By users utilizing public blockchains

User identity cannot yet be protected on blockchain systems

Through cryptographic hashing

By users utilizing permissioned blockchains

Questions # 63:

What blockchain is considered Blockchain 1.0, the first blockchain?

Options:

Bitcoin Cash

Ethereum

Litecoin

Bitcoin

NEO

Questions # 64:

Which of the following scenarios and databases is least suited to be utilized by a blockchain solution?

Options:

Scenario: Law enforcement system; Dataset: Criminal Arrests, Warrants for Arrest, Conviction Date

Scenario: An Email campaign service; Dataset: Recipient Email, From Email; Subject, Body

Scenario: A family filter wifi router; Dataset: Websites Visited, Websites Blocked, Download History

Scenario: Credit score app; Dataset: Credit Score, Hard Inquiries; Collections, Date Removed, Date Added

Questions # 65:

Ownership or partial ownership of an asset can be tracked with which type of token?

Options:

Equity

Utility

Ethereum

Game-based

Questions # 66:

In what year did a whitepaper that was published by “Satoshi Nakamoto” outlined a solution to the Byzantine Generals problem?

Options:

2006

2009

2008

2010

Questions # 67:

In what way(s) can Ethereum Smart Contract functions be invoked?

Options:

Only through code executed in other Smart Contracts and XML-RPC

Through code executed in other Smart Contracts and through web3.js or any JSON-RPC library

Only through code executed in another Smart Contract

Smart Contracts cannot be externally invoked. They become autonomous at launch and cannot be called.

Questions # 68:

Bitcoin uses what proof of work consensus system?

Options:

Cubehash512

Scrypt-Jane

Whirlpool

Scrypt-n

Hashcash

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