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Question 61/65
You have flown to NYC to have a discussion with a technical executive of a too big to fail bank. You are having a discussion about blockchain algos and the customer is asking what are some disadvantages of using a POW algo?
Correct Answer: C,E
Explanation/Reference:
Explanation:
The main disadvantages are huge expenditures, "uselessness" of computations and 51 percent attack.
Reference: https://cointelegraph.com/explained/proof-of-work-explained
Explanation:
The main disadvantages are huge expenditures, "uselessness" of computations and 51 percent attack.
Reference: https://cointelegraph.com/explained/proof-of-work-explained
- Question List (65q)
- Question 1: An _____________ is a well-known service that signs transact...
- Question 2: Which of the following enterprise blockchains have a pluggab...
- Question 3: Blockchains are decentralized ledgers which, by definition, ...
- Question 4: Which of the following is NOT considered a token?...
- Question 5: When writing and considering push and pull in a smart contra...
- Question 6: In Hyperledger, nodes need a ________________ to be able to ...
- Question 7: When considering tokens on the Ethereum Blockchain what is t...
- Question 8: Regarding Ethereum contracts, the contracts can call (perfor...
- Question 9: Chaincode is a decentralized transactional program, running ...
- Question 10: A centralized system is one that that is governed by a hiera...
- Question 11: What component on the blockchain maintains the "world state"...
- Question 12: Composer Modeling Language is an object-oriented modeling la...
- Question 13: The difference between Ethereum tokens and a standalone curr...
- Question 14: A ____________cipher basically means it is using a fixed key...
- Question 15: What are two specific advantages of using Hyperledger Fabric...
- Question 16: R3 Corda does not organize time into blocks. What does Corda...
- Question 17: The most popular Ethereum development framework is currently...
- Question 18: Addresses on a blockchain are derived by a process of hashin...
- Question 19: In the Proof of Stake(POS) algorithm the miners are really k...
- Question 20: What type of peer node executes transactions?...
- Question 21: Gas has multiple associated terms with it: Gas Prices, Gas C...
- Question 22: When you are developing with Fabric Composer which of the fo...
- Question 23: Contracts live on the blockchain in an Ethereum-specific bin...
- Question 24: You currently on a conference call with an executive from a ...
- Question 25: You would like to run Ethereum DApps in a browser without a ...
- Question 26: In Hashcash, miners all compete to look for a so called. "__...
- Question 27: What type of "bug" generally occurs when something isn't rig...
- Question 28: You are considering writing a smart contract for Ethereum an...
- Question 29: In the EVM every account has a persistent key-value store ma...
- Question 30: When developing in Ethereum which is considered to be an In-...
- Question 31: Your company working for is now considering the blockchain. ...
- Question 32: In Ethereum the difficulty adjustment algorithm is coded in ...
- Question 33: What is a logic gate in electronics and computer science?...
- Question 34: The ____________of the tree is the topmost node and hence th...
- Question 35: There are two types of tokens in blockchain solutions. (Sele...
- Question 36: The key difference between encryption and hashing is that en...
- Question 37: Which of the following is considered the most popular public...
- Question 38: What type of encryption is shown below and is commonly used ...
- Question 39: Blockchain provenance is defined as _______________?...
- Question 40: What does the 20 in ERC20 mean or relate to?...
- Question 41: You are currently consulting with an organization that ships...
- Question 42: Looking the graph below, what type of an attack is this like...
- Question 43: Hyperledger Composer has following two main components?...
- Question 44: What is the difference in using Go-Ethereum over Ganache?...
- Question 45: With Hyperledger Fabric ledger, it supports both levelDB / C...
- Question 46: Fabric Ledger has two specific parts. Select answer with the...
- Question 47: Smart Contracts provide all the following benefits EXCEPT?...
- Question 48: Ethereum is considered to be a ______________type of blockch...
- Question 49: What is the language that Solidity is using to build on the ...
- Question 50: In what year did a whitepaper that was published by "Satoshi...
- Question 51: When specifying blockchain technologies, it is important to ...
- Question 52: Your customer is an enterprise that is focused on financial ...
- Question 53: A Byzantine failure is the loss of a system service due to a...
- Question 54: Hyperledger is an enterprise focused blockchain project. Thi...
- Question 55: You are using Truffle for an Ethereum contract and would lik...
- Question 56: Ethereum currently uses the ___________Consensus Algo and in...
- Question 57: The gas price is a value set by the creator of the blockchai...
- Question 58: Secure Hash Algorithm (SHA-256) output is always 256 bits or...
- Question 59: How many peers in the network need to endorse a transaction ...
- Question 60: Smart Contracts are generally written in specific programmin...
- Question 61: You have flown to NYC to have a discussion with a technical ...
- Question 62: In Ethereum how is the block difficulty determined in Ethere...
- Question 63: ___________is advantageous because it presents scalability a...
- Question 64: ___________________ensures that the shared ledgers are exact...
- Question 65: Your company is looking to develop a new token and raise fun...
