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Take the Free Practice Test
Free Practice Test
Instructions:
FREE test and can be attempted multiple times.
60 Minutes
30 Multiple Choice Questions
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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.
True
False
Casper is the future POS Consensus model for Ethereum?
True
False
You have been given the task of designing a Private network. In which order of preference would you suggest the consensus model.
PoW
PoS
PoA
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?
True
False
Contract deployment requires payment of a fee known as gas.
True
False
To secure the Geth client which option would you use?
- -rpc
- -secure
- -netrestrict
For Geth the default logging level is :
0, silent
1, error
2, warning
3, info
4, core
5, debug
6, detail
You would like to create a testing environment for development. What network id will use use?
1
2
3 [Testnet]
4
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?
Live
Rinkeby
Ropstein
Local
Gas refers to the _________
Token
Unit for fee
EVM resource management
It's ok to use geth --dev for setting up a peer for participating in a live network
True
False
The option --network id 4 is the same as one of the following:
- -rinkeby
The attach command starts the geth client
True
False [It attaches a console to a running geth client]
Use the ______ option to execute script in a non-interactive mode
Console
attach
Exec
Preload
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
Created
Locked
Unlocked
An account keyfile is protected by _______
Password [ password protected keyfile stores Private keys]
Private key
Directory features (hidden)
You cannot retrieve your account if you lose your password
True
False
Mining is enabled by default in geth
True
False
In mining __________ gets the reward ethers
default account
Coinbase
Etherbase
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
Casper
Ghost
Clique
EThash
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
Ethreum Wallet
Dapp
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
Live Network
Test network
Private network
Hashing functions generate a fix length hash string for the input data that can be decrypted back to the data using the decrypting logic
True
False
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
Casper
Ghost
Clique
ETHash
Time is Up!