Bitcoin Quiz

Scoring system

• Questions 1-5 0,5 points
• Questions 6-10 1 point
• Questions 11-15 1,5 points

1. Which organization issues Bitcoins?

	Federal reserve system
	Russian Sberbank
	Bank of Japan
	No one is emitting Bitcoins

2. Name the date of issue of first Bitcoin block

	December 27 2009
	January 3 2009
	March 5 2009
	October 23 2010

3. What does the Auroracoin logo looks like?

4. What does the Bitcoin mining represents by itself?

	Bitcoin Foundation issues the reward for the usage of user’s computing power.
	All Bitcoins were created beforehand and are distributed between the users in strong proportion with their contribution to the network computing power.
	Bitcoins are created by the mining companies
	Bitcoins are awarded as a reward for decoding of transacted units, and their replenishment.

5. Would the miners disappear when number of the mined Bitcoins lead to 21 million?

	Yes, because they would not be able to get a reward
	No, because system would go to another level, and new issue company would start
	No, because the transaction calculation is always required, reward would be calculated out of the increased commission per transaction
	Yes, because the Bitcoin would no longer exist, if all Bitcoins would be mined.

6. What is the protocol for financial transactions among the following services?

	Ripple
	Armory
	Friendly pay
	Сryptorush

7. Is there a difference in graphic card performance when Bitcoin and Litecoin are mined, and why?

	Yes, because of the complexity differences
	No
	Depends on the transaction approval speed
	Yes, because of different algorithms

8. Could the Bitcoins be stolen?

	No, because this is just a programming code
	Yes, as well as any other digital docs or data
	No, because there is a need to perform the block decoding process again
	Yes, but only by the phishing way (tricking to transfer Bitcoins from purse to purse)

9. Does the Bitcoin and Litecoin were created by the same people?

	Yes, but nobody knows them
	Bill Gates and Jeb McCaleb respectively
	No, these systems were created by different people
	Yes, he is Charles Li. He has created Lightcoin right after he finished Bitcoins

10. Who could create Bitcoin fork?

	Only Bitcoin creator
	Only that, who bought the Bitcoin code from a creator
	Anyone
	Nobody

11. Which main factors influence on the complexity of Bitcoin network?

	Proportional to the miner's power (changes with the network speed)
	Depends on the complexity recalculation time and network computing power
	It only depends on the mined Bitcoin quantity
	Complexity is determined by the network creator

12. What is the essence of «Attack 51%»?

	Dual spending of the same bitcoins
	Ownerwhip of the 51% of mined Bitcoin
	Changing complexity on own discretion
	Information changing for more than half of all Bitcoin transactions and impact on the entire system

13. What hash function algorithm decoding is more difficult?

	SHA-256
	scrypt
	keccak
	Depends on network computing power

14. Up to how many digits after the decimal point Bitcoin is calculated?

	up to 5 digits
	up to 6 digits
	up to 7 digits
	up to 8 digits

15. Which graphic cards work better for Bitcoin mining?

	Radeon
	nVidia
	Any, in the similar price category
	Depends on the algorithms

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