Blockchain Quiz - Free Practice Tests (2023)
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Welcome to your BlockChain Quiz
A Decentralized application would (typically) not require a midtier as it connects directly to the Ethereum Network.
Casper is the future POS Consensus model for Ethereum?
You have been given the task of designing a Private network. In which order of preference would you suggest the consensus model.
There are 2 types of accounts supported by the wallet:
Single Signature & Multi Signature
Simple/Externally owned accounts & Contract accounts
Private Account & Public accounts
Wallets are used only for external account management?
Contract deployment requires payment of a fee known as gas.
To secure the Geth client which option would you use?
For Geth the default logging level is :
You would like to create a testing environment for development. What network id will use use?
The fastest way to sync geth client to testnet is to
use - -dev option
Use machine with huge RAM/CPU
use - -syncmode = light
Geth if launched without the --network id or --testnet will connect to the _____ network?
Gas refers to the _________
Unit for fee
EVM resource management
It's ok to use geth --dev for setting up a peer for participating in a live network
The option --network id 4 is the same as one of the following:
The attach command starts the geth client
False [It attaches a console to a running geth client]
Use the ______ option to execute script in a non-interactive mode
You have started a geth client and would like to connect to the console from another machine, you would use one of the following to do so
geth attach ipc/geth.ipc
geth attach http://…:8545
geth console ws://…:8545
Account in Geth is ______ by default
An account keyfile is protected by _______
Password [ password protected keyfile stores Private keys]
Directory features (hidden)
You cannot retrieve your account if you lose your password
Mining is enabled by default in geth
In mining __________ gets the reward ethers
any of the above
EVM stands for ___________
Ethereum Virtual Machine
Ethereum Validation Methodology
Ethereum Value Metadata
pragma solidity ^0.4.6; Provides instruction to the compiler that ___________
code is compatible with specified version and below
code is compatible with specified version and above
code is compatible with version 0.4.6 only
Ethereum Proof of Authority protocol
You have used a DAPP to send a transaction but for some reason. you are not sure if the transaction went through or not. You have your account address so you can use the _______ for checking
Ethereum Explorer (etherscan)
There are multiple Ethereum network types. An enterprise organization is concerned about risk of losing data, so the may go for _______ chain
Hashing functions generate a fix length hash string for the input data that can be decrypted back to the data using the decrypting logic
Miner needs to solve a puzzle in ___________
Proof of Work
Proof of Stake
Proof of Authority
The Ethereum Proof of Work protocol is known as the ________ protocol
Time is Up!