Question 1

Which of the following would create a blockchain transaction?

Options :

A : Updating a Smart Contract

B : Updating an internal State variable

C : Exchanging solution tokens

D : All of the above

Answer: C

Question 2

Which one of the following is true regarding Smart Contracts on the Ethereum blockchain?

Options :

A :

They provide added security over off-chain transaction code on other blockchain networks

B :

Because they are compiled into bytecode they cannot be used in an unintended manner

C : Any flaw discovered in their code can quickly be updated and redeployed

D : They are Turing complete and deterministic in nature

Answer: D

Question 3

Select the two kinds of accounts in Ethereum which share the same address space. (Select two.)

Options :

A : Gas Account

B : Contract Accounts

C : External Accounts

D : Internal Accounts

E : dApp Accounts

Answer: B,C

Question 4

Taking a series of unrelated transactions and writing them to a particular block is:

Options :

A : Highly insecure and considered bad practice

B : Most common in public blockchain

C : Most common in permissioned blockchains

D : Required among all blockchains

Answer: A

Question 5

What is the language that Solidity is using to build on the Ethereum Virtual Machines(EVM)?

Options :

A : .Net

B : Javascript

C : C++

D : Node.js

E : PHP

Answer: B

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