Question 1

Which of the following hash algorithms does Bitcoin use?

Accepted Answer

A) SHA-224 
B) SHA-256 
C) SHA-382 
D) SHA-512 
A) SHA-224 
B) SHA-256 
C) SHA-382 
D) SHA-512 D

Question 2

Which of the following is the default encryption for digital Bitcoin wallets?

Accepted Answer

A) RSA cipher. 
B) Symmetric key. 
C) Hashing encryption. 
D) None of the above. 
A) RSA cipher. 
B) Symmetric key. 
C) Hashing encryption. 
D) None of the above. D

Question 3

Which of the following types of cryptography does Bitcoin use?

Accepted Answer

A) One time pad. 
B) Stenography. 
C) Symmetric cipher. 
D) Public key cryptography. 
A) One time pad. 
B) Stenography. 
C) Symmetric cipher. 
D) Public key cryptography. D

Question 4

How many characters do most Bitcoin addresses have?

Accepted Answer

A) 27 
B) 32 
C) 33 
D) 34 
A) 27 
B) 32 
C) 33 
D) 34

Question 5

This mining hardware will debut in February 2014 with a price tag of more than $22,000.

Accepted Answer

A) BitForce 500 GH/s Mini Rig SC. 
B) Xtreme Miners The "Lion." 
C) TerraHash DX Large. 
D) Black Arrow Prospero X-3. 
A) BitForce 500 GH/s Mini Rig SC. 
B) Xtreme Miners The "Lion." 
C) TerraHash DX Large. 
D) Black Arrow Prospero X-3.

Question 6

What is the probability that the block chain will accept a mistyped Bitcoin address as valid?

Accepted Answer

A) One in 540 million. 
B) One in 1.07 billion. 
C) One in 2.14 billion. 
D) One in 4.29 billion. 
A) One in 540 million. 
B) One in 1.07 billion. 
C) One in 2.14 billion. 
D) One in 4.29 billion.

Question 7

How many times has the mining difficulty decreased?

Accepted Answer

A) Zero. 
B) One. 
C) Two. 
D) Four. 
A) Zero. 
B) One. 
C) Two. 
D) Four.

Question 8

How many times can a Bitcoin address be used?

Accepted Answer

A) One. 
B) Two. 
C) Ten. 
D) Unlimited. 
A) One. 
B) Two. 
C) Ten. 
D) Unlimited.

Question 9

Which of the following two numbers do all Bitcoin addresses have to begin with?

Accepted Answer

A) One or three. 
B) One or five. 
C) Three or five. 
D) One or seven. 
A) One or three. 
B) One or five. 
C) Three or five. 
D) One or seven.

Question 10

After approximately how many years is the reward for mining a block of bitcoins halved?

Accepted Answer

A) 1 year. 
B) 2 years. 
C) 4 years. 
D) 6 years. 
A) 1 year. 
B) 2 years. 
C) 4 years. 
D) 6 years.

Question 11

When was the first mining difficulty increase?

Accepted Answer

A) December 2009. 
B) March 2010. 
C) July 2010. 
D) November 2010. 
A) December 2009. 
B) March 2010. 
C) July 2010. 
D) November 2010.

Question 12

When did the generation difficulty pass 10,000?

Accepted Answer

A) August 2009. 
B) April 2010. 
C) December 2010. 
D) March 2011. 
A) August 2009. 
B) April 2010. 
C) December 2010. 
D) March 2011.

Question 13

Which of the following types of mining hardware is capable of 3,000,000 Mhashes per second?

Accepted Answer

A) HashFast Sierra - Second Batch. 
B) KnC Neptune. 
C) CoinTerra TerraMiner IV. 
D) Black Arrow Prospero X-3. 
A) HashFast Sierra - Second Batch. 
B) KnC Neptune. 
C) CoinTerra TerraMiner IV. 
D) Black Arrow Prospero X-3.

Question 14

How does one user transfer a Bitcoin to another?

Accepted Answer

A) Digital signature. 
B) Sharing their private key. 
C) Delivery via email. 
D) None of the above. 
A) Digital signature. 
B) Sharing their private key. 
C) Delivery via email. 
D) None of the above.

Question 15

How long does it typically take for others on the network to validate a transaction?

Accepted Answer

A) Thirty seconds. 
B) Two minutes. 
C) Five minutes. 
D) Ten minutes. 
A) Thirty seconds. 
B) Two minutes. 
C) Five minutes. 
D) Ten minutes.

Which of the following hash algorithms does Bitcoin use?

Which of the following is the default encryption for digital Bitcoin wallets?

Which of the following types of cryptography does Bitcoin use?

How many characters do most Bitcoin addresses have?

This mining hardware will debut in February 2014 with a price tag of more than $22,000.

What is the probability that the block chain will accept a mistyped Bitcoin address as valid?

How many times has the mining difficulty decreased?

How many times can a Bitcoin address be used?

Which of the following two numbers do all Bitcoin addresses have to begin with?

After approximately how many years is the reward for mining a block of bitcoins halved?

When was the first mining difficulty increase?

When did the generation difficulty pass 10,000?

Which of the following types of mining hardware is capable of 3,000,000 Mhashes per second?

How does one user transfer a Bitcoin to another?

How long does it typically take for others on the network to validate a transaction?

What Is Bitcoin

History

Usage

Economics

In the News

Limitations

Filters

Exam 7: Protocol

Which of the following hash algorithms does Bitcoin use?

Which of the following is the default encryption for digital Bitcoin wallets?

Which of the following types of cryptography does Bitcoin use?

How many characters do most Bitcoin addresses have?

This mining hardware will debut in February 2014 with a price tag of more than $22,000.

What is the probability that the block chain will accept a mistyped Bitcoin address as valid?

How many times has the mining difficulty decreased?

How many times can a Bitcoin address be used?

Which of the following two numbers do all Bitcoin addresses have to begin with?

After approximately how many years is the reward for mining a block of bitcoins halved?

When was the first mining difficulty increase?

When did the generation difficulty pass 10,000?

Which of the following types of mining hardware is capable of 3,000,000 Mhashes per second?

How does one user transfer a Bitcoin to another?

How long does it typically take for others on the network to validate a transaction?

What Is Bitcoin

History

Usage

Economics

In the News

Limitations

Filters