CBSA BTA Certified Blockchain Solution Architect Questions and Answers

What are two challenges with using a Proof of Work algorithm? (Select two.)

You are using Truffle for an Ethereum contract and would like to use a default set of contracts and tests from within an empty project directory.

What is the syntax?

In Hyperledger Fabric, the smart contract logic is also called by two other names _______________ and ______________? (Select two.)

What is provided by the Hyperledger Fabric to facilitate network communications?

Consider the following scenario: Due to consistent inaccuracies and outdated real estate listings, a residential real estate company wants to build a blockchain solution that accurately depicts which homes (assets) are available for purchase across all countries/provinces. All available homes should be publicly viewable by the general consumer audience, but certain details of the home, such as history of maintenance, should only be viewable by licensed real estate professionals.

Which architecture would best solve the product need?

The ____________of the tree is the topmost node and hence this tree is represented upside down. The bottommost nodes are called as ________nodes. Each node is simply a cryptographic hash of a transaction.

In the above diagram, Transaction A,B, C,C from the leaves of the tree. Select one.

The key difference between encryption and hashing is that encrypted strings can be reversed back into their original decrypted form if you have the right key?

The difference between Ethereum tokens and a standalone currency like Litecoin is that ___________tokens piggyback on the Ethereum network, hosted by Ethereum addresses and sent using Ethereum transactions.

Satoshi Nakamoto invented a way to achieve Decentralized Consensus?

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

Which of the following is NOT considered a token?

In regard to blockchain, complete autonomy, transparency, and decentralization:

What are some likely repercussions that could occur as a result of a 51% attack to the Bitcoin network? (Select three.)

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

When a consensus algo is considered to be "pluggable modularity», what does that mean?

In the Ethereum EVM there are two types of memory areas. (Select two.)

In Ethereum how is the block difficulty determined in Ethereum?

If a company desires to create a unique cryptocurrency and launch a new blockchain network to host it.

To determine the anticipated load on an application, the number of end users should be considered along with?

Regarding Ethereum contracts, the contracts can call (perform) two specific message calls. The message calls are either _____________ or __________? (Select two.)

What is diagram referencing below?

You would like to run Ethereum DApps in a browser without a node. (No need to download blockchain.)

What could you use locally in your Chrome browser?

Which of these reasons is a good reason to choose a conventional database over blockchain to store application data?

In common blockchain design, which data structure is used to create a lightweight digital fingerprint of all the transactions within a block?

Fabric Ledger has two specific parts. Select answer with the proper two parts.

A Smart Contract is most like which classical programming object?

What blockchain is considered Blockchain 1.0, the first blockchain?

The block creation time is set to how many minutes in Bitcoin? 

Which of the following is not considered an Ethereum testnet?

What are two specific advantages of using Hyperledger Fabric? (Select two.)

The primary difference between a blockchain and blockless solution is?