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Blockchain CBSA Practice Test - Questions Answers, Page 14

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There are two types of tokens in blockchain solutions. (Select two.)

A.
Legal
A.
Legal
Answers
B.
Utility
B.
Utility
Answers
C.
Equity
C.
Equity
Answers
D.
Financial
D.
Financial
Answers
Suggested answer: B, C

You are currently considering blockchain solutions for your organization. You read an article about "blockless" blockchains. What are the two benefits that could be gained over a traditional blockchain solution? (Select two.)

A.
Faster Block writes
A.
Faster Block writes
Answers
B.
Greater Transaction Security
B.
Greater Transaction Security
Answers
C.
Faster Performance
C.
Faster Performance
Answers
D.
Greater transaction Capacity
D.
Greater transaction Capacity
Answers
Suggested answer: A, B

Explanation:

Reference: https://solarmagazine.com/blockchain-trading-peer-to-peer-solar-energy-trading/

In blockchains there is the concept of "Group Consensus" and how many members must agree.

A.
52%
A.
52%
Answers
B.
74%
B.
74%
Answers
C.
75%
C.
75%
Answers
D.
51%
D.
51%
Answers
E.
100%
E.
100%
Answers
Suggested answer: D

What consensus algo uses a method of sending coins to an address where they cannot be retrieved?

A.
Proof of Stake
A.
Proof of Stake
Answers
B.
Proof of Activity
B.
Proof of Activity
Answers
C.
Proof of Burn
C.
Proof of Burn
Answers
D.
Proof of Sending
D.
Proof of Sending
Answers
Suggested answer: A

Bitcoin implemented Byzantine Fault Tolerance through a system named:

A.
Authenticated Encryption
A.
Authenticated Encryption
Answers
B.
Proof of Work
B.
Proof of Work
Answers
C.
PBKDF2
C.
PBKDF2
Answers
D.
None of the above
D.
None of the above
Answers
Suggested answer: B

Explanation:

Reference: https://medium.com/loom-network/understanding-blockchain-fundamentals-part-1-byzantine-fault-tolerance-245f46fe8419

Hyperledger is an enterprise focused blockchain project. This project was released by a consortium under the umbrella of the Linux Foundation's Hyperledger Project.

What year did Hyperledger go live?

A.
2013
A.
2013
Answers
B.
2012
B.
2012
Answers
C.
2015
C.
2015
Answers
D.
2009
D.
2009
Answers
Suggested answer: C

What is the difference in using Go-Ethereum over Ganache?

A.
Can automate builds with Go Ethereum but you can't with Ganache
A.
Can automate builds with Go Ethereum but you can't with Ganache
Answers
B.
Go Ethereum is written in Java whereas Ganache is written in Golang
B.
Go Ethereum is written in Java whereas Ganache is written in Golang
Answers
C.
Go Ethereum is real blockchain whereas Ganache is a blockchain simulation
C.
Go Ethereum is real blockchain whereas Ganache is a blockchain simulation
Answers
D.
Ganache is a real blockchain whereas Go Ethereum is a blockchain simulation
D.
Ganache is a real blockchain whereas Go Ethereum is a blockchain simulation
Answers
Suggested answer: B

Explanation:

Reference: http://truffleframework.com/docs/getting_started/client

In what year did a whitepaper that was published by "Satoshi Nakamoto" outlined a solution to the Byzantine Generals problem?

A.
2006
A.
2006
Answers
B.
2009
B.
2009
Answers
C.
2008
C.
2008
Answers
D.
2010
D.
2010
Answers
Suggested answer: C

Explanation:

In 2008 a whitepaper is published by "Satoshi Nakamoto" which outlines a solution to the Byzantine Generals problem

What is a development language which lets developers solve any class of problem in existence given infinite time and resources?

A.
Turing Complete
A.
Turing Complete
Answers
B.
Turing Incomplete
B.
Turing Incomplete
Answers
C.
Solidity
C.
Solidity
Answers
D.
Mist
D.
Mist
Answers
E.
JVM
E.
JVM
Answers
F.
EVM
F.
EVM
Answers
Suggested answer: A

Explanation:

Turing Complete - A language which lets developers solve any class of problem in existence given infinite time and resources Vs Turing Incomplete - Can't solve all types of problems, such as problems with loops and iterations (Bitcoin)

When you considering developing and running dAPPS in Ethereum its important to understand that Gas and Ether are decoupled for price stability. Is this True or False?

A.
True
A.
True
Answers
B.
False
B.
False
Answers
Suggested answer: A

Explanation:

True. Gas and Ether are decoupled for price stability reasons especially because Ether can vary in price significantly even in a day.

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