Question 1

What is another name for blockchains that run adjacent to the blockchains and also offer more scope for processing contracts?

Options :

A : Adchains

B : Funnelchains

C : Multichains

D : Sidechains

Answer: D

Question 2

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 3

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

Question 4

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

Question 5

Secure Hash Algorithm (SHA-256) output is always 256 bits or 32 bytes in length regardless of the length of the input (even if input is millions of bytes). Select best answer.

Options :

A : NSA is spying on us so what-s it matters.

B : Depends on input

C : False

D : True

Answer: D

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