Multiple Choice
To avoid issues during Ethereum platform upgrades:
A) it's good to inform users about the updates via a newsletter.
B) it's good to have the ability to pause a contract in order to manage the money at risk.
C) Ethereum doesn't upgrade the platform. It's fixed and final.
Correct Answer:

Verified
Correct Answer:
Verified
Q50: You need to use _ to get
Q51: When a smart contract pays out money:<br>A)
Q52: Importing from GitHub:<br>A) works across all compilers
Q53: Address.Call vs. Address.Delegatecall:<br>A) Address.call() is used for
Q54: Using truffle-contract over Web3.js:<br>A) is a must
Q56: Sending one Ether is actually internally translated:<br>A)
Q57: Finish the sentence: The Library Web3.js is
Q58: It's not possible to use inheritance from
Q59: When considering smart contracts and the blockchain
Q60: Loops in Solidity:<br>A) are a great way