CBSA BTA Certified Blockchain Solution Architect Questions and Answers

Proof of Work

Proof of Importance

Proof of Stake

All of the above

An immutable digital ledger that is validated and distributed across many peers

Using API calls, cryptocurrency having a direct correlation to USD exchange rates

High performance computing power allows cryptocurrency to be minted just as a central government might do with fiat currency

Blockchain cryptocurrency transactions are always public which generates user trust and adoption

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

Bitcoin Cash

Ethereum

Litecoin

Bitcoin

NEO

FileBlocks

Hyperbole

FileDropperTM

IPFS

Encryption

Consensus

Validation

Replication

The fees for deploying and using Smart Contracts

How you will provide proper uptime for the network

The level of security of Smart Contracts (chaincode)

How often hard forks occurs on the software

TRUE

FALSE

AND Gate

XOR Gate

OXR Gate

NAND Gate

Encrypt the public key

Generate unique hash values each time it is used

Verify the digital signature of a public key

Sign/approve any transaction/action that might be made by the holder of the key pair

An immutable ledger of transactions

Permissions-based transactions

Smart Contracts/transactional code that is executed “on chain”

Consensus systems through Proof of Work and Proof of Stake

Price

Fee

Cost

Limit

Smart contract

DApps

Node programs

Virtual machines

51% Attack

P+ Epsilon Attack

Blacklisting

Selfish Mining Attack

FALSE

TRUE

Metamask

Ether

Mist

EVM

Ropstein

Rinkeby

Mainnet

Kovan

Distributed Autonomous Operations

Distributed Anonymous Organization

Distributed Anonymous Operations

Decentralized Autonomous Organization

Cryptocurrency cannot be created or used

because it is permissioned, companies cannot launch products on it

Because it is permissioned, it is impossible to display data to the general public

None of the above

Updating a Smart Contract

Updating an internal State variable

Exchanging solution tokens

All of the above

TRUE

FALSE

A logic gate usually takes in 2 inputs and gives out 1 output. The inputs and outputs are binary values, meaning they can be both 1 and 0.

A logic gate usually takes in 3 inputs and gives out 2 output. The inputs and outputs are binary values, meaning they can be 1 or 0.

A logic gate usually takes in 2 inputs and gives out 6 output. The inputs and outputs are binary values, meaning they can be both 1 and 0.

A logic gate usually takes in 2 inputs and gives out 1 output. The inputs and outputs are binary values, meaning they can be 1 or 0.

Kwei

Shannon

Wei

Finney

TRUE

FALSE

State Data, Transactional Data

State Data, Transaction logs

LevelIDb, CouchDB

Transaction Logs, CouchDB

Yes

No

Permissionless

Permission Based

Hybrid

Private

2013

2012

2015

2009

They must use ERC20 standard for the token, clone the Ethereum Virtual Machine, then launch a series of nodes

They must use ERC20 standard for the token and can use any open source blockchain tool/system to launch a series of nodes

They can both create their own cryptocurrency and launch their own blockchain network with any common open source blockchain tool/system

None of the above

A PRNG output guaranteed to be unique

A server/node timestamp added to a PRNG output

Creating a hash based on a cryptographic public key and various meta data

The most recent block height hash combined with a cryptographic private key