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Blockchain CBSA - BTA Certified Blockchain Solution Architect

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Total 229 questions

A centralized system is one that that is governed by a hierarchical authority.

Which of the following Blockchains would be correctly stated as centralized?

A.

Monero

B.

Ethereum

C.

Bitcoin Cash

D.

Ripple

When writing and considering push and pull in a smart contract that involves "user" funds would it be better to ____________________?

A.

Withdraw funds rather than pull funds to them automatically

B.

Withdraw funds rather than push funds to them automatically

C.

Pull funds rather than push funds to them automatically

D.

Push funds rather than pull funds to them automatically

A Blockchain network can be best categorized as:

A.

A centralized network

B.

A decentralized peer-to-peer network

C.

A series of nodes managed by a genesis node

D.

A distributed network centralized ledgers

How does a client app communicate with Hyperledger fabric chaincode (Smart Contracts)?

A.

The app uses an SDK which invokes functionality on the chaincode which then announces the transaction to any peers required to endorse the transaction

B.

The app uses Hyperledger Composer to communicate with CouchDB which in turn invokes chaincode functionality

C.

Client apps don’t communicate with Hyperledger fabric directly, they must use Hyperledger Composer for the transmission

D.

The app points to a node’s IP address, then calls an invoke function on the chaincode address to start the write process

Which is the right order for Ethereum Denominations?

A.

Finney, Szabo, Mether, Wei

B.

Gwei, Szabo, Finney, Ether

C.

Finney, Szabo, Mether, Gwei

D.

Wei, Finney, Szabo, Ether, Tether

Which of the following is NOT a requirement of an enterprise blockchain typically?

A.

Append-only distributed system of record shared across business network

B.

Cost efficient blockchain

C.

Transactions are endorsed by relevant participants

D.

Ensuring appropriate visibility; transactions are secure, authenticated & verifiable

In regards to understanding the Ethereum Virtual Machine what statement is true?

A.

The EVM is extremely powerful, non-turing complete and perfect for doing computational intensive thins, because of the direct access to the graphics card.

B.

The EVM is extremely powerful, turing complete and perfect for doing computational intensive things, because of the direct access to the graphics card.

C.

While the EVM is Sandboxed, it isn’t as powerful as the Bitcoin network, because it’s not Turing Complete

D.

The EVM can’t access hardware layers or anything outside a blockchain node because it’s sandboxed.

Which one of the following is true concerning Hyperledger Fabric?

A.

Cryptocurrency cannot be created or used

B.

because it is permissioned, companies cannot launch products on it

C.

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

D.

None of the above

Composer Modeling Language is an object-oriented modeling language that defines the domain model for a business network definition. The modeling language is saved as a __________ file.

A.

.json

B.

.go

C.

.txt

D.

.ico

E.

.cto

Which factor influences the gas cost to deploy a Smart Contact on the Ethereum blockchain?

A.

None. Smart Contract deployment has a fixed gas cost

B.

The types of operations written in code within the Smart Contract

C.

The current Ethereum market conditions

D.

The total size of the complied Smart Contract measured in kilobytes