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Question 1

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 2

In the Proof of Stake(POS) algorithm the miners are really known as ___________?

Options :

A : Notary

B : Oracle

C : Forgers

D : Minters

Answer: C

Question 3

Consider the following scenario. A startup is building a chat app for smart phones where the messages sent between users are anonymous and get destroyed within 24 hours of being sent.

Which architecture would best solve the product need?

Options :

A : Ethereum for token management and chat messages; Mobile apps use JSON-RPC to communicate directly with Smart Contracts

B : Private blockchain to persist chat messages; Custom built token system with private blockchain smart contract

C : Token management for shareholders in a public blockchain; Mobile apps and data management built on existing multitier systems without use of blockchain

D : Hybrid blockchain for token management with Proof of Stake; private blockchain to persist the chat messages

Answer: C

Question 4

The fabric framework is implemented on ______programming language.
What programming language?

Options :

A : Go

B : Python

C : Node.js

D : Java

E : JS

Answer: A

Question 5

Smart Contracts are generally written in specific programming languages. Which one is NOT a language for smart contracts?

Options :

A : Net

B : Viper

C : LLL

D : Solidity

Answer: A