DRO2 Chapter 10 Knowledge

Regarding key generation involved with Bitcoin transactions, (1) what size is the private key that is initially generated, and (2) what size is the Elliptic Curve public key that is generated? (1) 512-bit private key, (2) 256-bit Elliptic Curve public key (1) 256-bit private key, (2) 512-bit Elliptic Curve public key (1) 128-bit private key, (2) 256-bit Elliptic Curve public key (1) 128-bit private key, (2) 128-bit Elliptic Curve public key

(1) 256-bit private key, (2) 512-bit Elliptic Curve public key

______ is a command line interface for running Ethereum node implemented in Go Language. Using the interface allows you to join Ethereum networks, transfer ether between accounts or even mine ethers. Ether Gas Splunk Geth

Geth

Bitcoin currency is created when users mine for it, using computers to perform complex calculations through special software. True False

True

Bitcoins generate a 256-bit random key which is converted into a ______ key, and which has a 256-bit private key and a 512-bit public key. pseudo-random Wif TOR shared

Wif

The high reward that comes with successful crypto mining makes it highly competitive. What aspect makes the process challenging and limits those in contention. math calculations required lab space required computing power required insider trading knowledge required

computing power required

Regarding crypto currency, BTC is to Bitcoin as _____ is to Ethereum. geth ETT ether gas

ether

Bitcoin miners with the ______ resources have the best chances of successfully mining transactions to gain rewards. stealthiest quietest fastest newest

fastest

With regard to Bitcoins, the ______, refers to the first transaction created. crypto currency blockchain genesis record crypto currency source

genesis record

What aspect of a given Ethereum transaction may detract a crypto currency miner from pursuing it? high fee low fee ether creep gas creep

low fee

A bitcoin transaction in simplest terms consists of an owner of bitcoin transferring ownership to another party. Valid transactions are captured by ______ who will hash, compile, and eventually integrate the mined block into a blockchain network if legit. hackers miners ADMINs bankers

miners

A mining node that successfully completes the creation of a current Blockchain is __________. a class 1 felon violating privacy deducted bitcoins rewarded with bitcoins

rewarded with bitcoins

Bitcoin leverages ECC to ____ transactions. prevent monitor store sign for

sign for

Ethereum was created by Vitalik Buterinin in 2015 and was built on the Bitcoin/Blockchain concept but included which additional concept? smart contracts crypto currency transactions cryptography

smart contracts

In comparing public and private blockchain implementations, which offers the best level of trust and security? Private Public

Public

What is the hash value, in bits, produced by the Keccak algorithm used in Ethereum gas calculations? 256 512 128 1024

256

In Bitcoin transactions, a 256-bit random key is converted into a Wif with an address is in Base-58 format. Where is the WiF stored? Bitcoin wallet Bitcoin Vault Bitcoin Exchange Registry (BER) Bitcoin Transfer Registry (BTR)

Bitcoin wallet

What term below best describes a publicly available ledger/database of trustworthy transactions used by Bitcoin that aids in preventing individuals from spending crypto-currency that they do not have? Blockchain BTC Gas Ethereum

Blockchain

From the list below, select the items that the gas price per transaction in Etheruem directly influences. Select all that apply. Code designer efficiency Infinite loop prevention Spanning tree DoS prevention

Code designer efficiency Infinite loop prevention DoS prevention

The main contribution of _______ is to create the concept of peer-to-peer smart contracts which enables users to create their own contracts, and which will be strictly abided to. Bitcoin Solidity Ethereum Cryptkash

Ethereum

Each time a Bitcoin miner processes a transaction, the reward increases which in turn ensures the supply of coins increases over time. True False

False

The major difference between Hyperledger and Ethereum is that Hyperledger does not offer the smart contracts feature. True False

False

Use of a centralized server with Bitcoin facilitates ease of management of transactions. True False

False

What describes the unit that is used to measure the amount of work that is required to perform a single Keccak-256 hash when dealing with Ethereum? Bytes Gas Ether Work Factor

Gas