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Blockchain CBSA Practice Test - Questions Answers, Page 7
List of questions
Question 61
You are using Geth and you would like to list the accounts controlled by the node.
What is the command?
Reference: https://datawookie.netlify.com/blog/2018/01/ethereum-running-a-node/
Question 62
___________________ensures that the shared ledgers are exact copies, and lowers the risk of fraudulent transactions, because tampering would have to occur across many places at exactly the same time.
Consensus ensures that the shared ledgers are exact copies, and lowers the risk of fraudulent transactions, because tampering would have to occur across many places at exactly the same time
Reference: https://www.ibm.com/developerworks/cloud/library/cl-blockchain-basics-intro-bluemix-trs/index.html
Question 63
Ethereum tries to keep the mining time difference between ____ and _____seconds.
Reference: https://dltlabs.com/how-difficulty-adjustment-algorithm-works-in-ethereum/
Question 64
Which of the following cryptocurrencies use an alternate consensus method called "Scrypt" to BTC's Proof of Work (POW) SHA-256 algorithm?
The Scrypt hash function was initially implemented by the Litecoin development team to avoid what are known, ASICs, from being able mine its cryptocurrency. When mining for cryptocurrencies, users typically have an option between: a CPU, GPU or ASIC miner.
Reference: https://www.mycryptopedia.com/litecoin-scrypt-algorithm-explained/
Question 65
What is chaincode?
Reference: http://hyperledger-fabric.readthedocs.io/en/release-1.1/chaincode.html
Question 66
Addresses on a blockchain are derived by a process of hashing _________.
Reference: https://medium.com/@ConsenSys/blockchain-underpinnings-hashing-7f4746cbd66b
Question 67
When considering a new ERC20 token its best to consider using ____________________.
Reference: https://medium.com/@merunasgrincalaitis/gain-ethereum-ico-trust-credibility-e9e53145c331
Question 68
Smart Contracts are generally written in specific programming languages. Which one is NOT a language for smart contracts?
Question 69
What is diagram referencing below?
XOR or "Exclusive OR" is a logic gate.
Reference: https://blockgeeks.com/guides/cryptocurrencies-cryptography/
Question 70
Which of the following is considered the most popular public key encryption algorithm?
Reference: https://medium.com/@ConsenSys/blockchain-underpinnings-hashing-7f4746cbd66b
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