Question 1

The difference between Ethereumtokens and a standalone currency like Litecoin is that ___________tokens piggyback on the Ethereum network, hosted by Ethereum addresses and sent using Ethereum transactions.

Options :

A : ERC

B : ERC20

C : Ether

D : BIP

Answer: B

Question 2

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 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

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

Question 5

You have flown to NYC to have a discussion with a technical executive of a too big to fail bank. You are having a discussion about blockchain algos and the customer is asking what are some disadvantages of using a POW algo?

Options :

A : Centralization of blockchain control

B : Only use case for computational power is blockchain

C : Large expenditures for computational power

D : Not profitable for miners

E : 51% attack mitigation

Answer: A,C

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