Blockchain CBSA BTA Certified Blockchain Solution Architect Online Training
Blockchain CBSA Online Training
The questions for CBSA were last updated at Dec 20,2024.
- Exam Code: CBSA
- Exam Name: BTA Certified Blockchain Solution Architect
- Certification Provider: Blockchain
- Latest update: Dec 20,2024
What are some likely repercussions that could occur as a result of a 51% attack to the Bitcoin network? (Select three.)
- A . Unplanned Fork
- B . Double Spending
- C . Cancelling Transactions
- D . Planned Fork
- E . Selfless Mining
Proof of Stake based blockchain systems use what design to permit valid write transactions?
- A . A genesis “Stake” node approves or disapproves transactions announced from other nodes
- B . Validator nodes each give or pay a stake in order to write transactions, and if malicious, will lose their stake
- C . Stakeholders or early product investors host nodes that approve or disapprove transactions from other nodes
- D . Every node on the network holds an equal stake, and if malicious, gets flagged for removal
What are two cryptocurrencies that you would expect to see mining equipment with ASICS? (Select two.)
- A . Bitcoin
- B . Ethereum
- C . Neo
- D . Litecoin
- E . Monero
______ is the official Ethereum IDE that allows developers to build and deploy contracts
and decentralized applications on top of the Ethereum blockchain.
- A . Mist
- B . Mix
- C . Truffle
- D . Metamask
- E . Embark
What is the difference in using Go-Ethereum over Ganache?
- A . Can automate builds with Go Ethereum but you can’t with Ganache
- B . Go Ethereum is written in Java whereas Ganache is written in Golang
- C . Go Ethereum is real blockchain whereas Ganache is a blockchain simulation
- D . Ganache is a real blockchain whereas Go Ethereum is a blockchain simulation
To interact with a deployed Ethereum Smart Contract, a user or app must:
- A . Have a reference to the public address of the deployed Smart Contract
- B . Have the appropriate permissions needed to invoke the functions of the Smart Contract
- C . Have sufficient gas to perform read and write operations against the Smart Contract
- D . All of the above
What are two reasons that you would consider implementing a POW algo in your blockchain? (Select two.)
- A . PoW imposes no limits on actions in the network and therefore can thwart attacks better than other algos due to high cost
- B . What matters is to have large computational power to solve the puzzles and form new blocks over having a financial stake.
- C . PoW imposes some limits on actions in the network and therefore can thwart attacks better than other algos due to high cost
- D . The algo is energy efficient compared to POS and BFT
- E . The algo is energy efficient compared to POS and DPOS
Bitcoin implemented Byzantine Fault Tolerance through a system named:
- A . Authenticated Encryption
- B . Proof of Work
- C . PBKDF2
- D . None of the above
Ethereum smart contracts can be written in what programming languages? Select all that apply.
- A . Serpant
- B . Cobol
- C . LLL
- D . LLC
- E . Vyper
- F . Node.js
- G . IOS
- H . Mutan
- I . Solidity
Which of the following is true concerning Hyperledger Composer?
- A . It’s a competing blockchain to Hyperledger Fabric in the Hyperledger suite of tools
- B . It’s an API layer that sits above Hyperledger Fabric and is required to interact with the Fabric blockchain
- C . It’s a toolset and framework for easily developing business networks
- D . It’s a consensus-focused replicable state machine framework for blockchain development
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