Question 1

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 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

When developing in Ethereum which is considered to be an In-Memory Blockchain simulations for rapid development?

Options :

A : Cpp-ethereum

B : Geth

C : TestRPC

D : Parity

Answer: C

Question 4

What is the accepted best practice for preventing contract addresses from changing when a new contract is released?

Options :

A : Move your contract to a new blockchain

B : Delete the old contract and add the new version in its place

C : Addresses always change so use a calling contract

D : Use the ''- -addressForce'' parameter when releasing a new contract

Answer: D

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

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