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Blockchain CBBF Practice Test - Questions Answers

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Why is Blockchain important?
Blockchain is always distributed.
How does a private Blockchain differ from a public one? Select all that apply.
What is a private Blockchain used instead of a public one?
Where is a Blockchain's central server?
A Blockchain provides______________.
What is a node in a Blockchain? Select all that apply.
Blockchain is always decentralized.
A smart contract on the Blockchain provides __________. Select all that apply.
What is a block?

Question 1

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What does a Merkle tree provide?

A.
Efficient block lookups and protection against forgery
A.
Efficient block lookups and protection against forgery
Answers
B.
Anonymity and transparency
B.
Anonymity and transparency
Answers
C.
A Turing complete distributed network
C.
A Turing complete distributed network
Answers
D.
A way to deploy smart contracts onto the Blockchain
D.
A way to deploy smart contracts onto the Blockchain
Answers
E.
All of the above
E.
All of the above
Answers
Suggested answer: A
asked 16/09/2024
Parita Malbari
48 questions

Question 2

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What does P2P stand for?

A.
Person to Person
A.
Person to Person
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B.
Public to Person
B.
Public to Person
Answers
C.
Peer to Peer
C.
Peer to Peer
Answers
D.
Product to Person
D.
Product to Person
Answers
E.
None of the above
E.
None of the above
Answers
Suggested answer: C
asked 16/09/2024
Martynas Abrutis
39 questions

Question 3

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Blockchain is always decentralized.

A.
True
A.
True
Answers
B.
False
B.
False
Answers
Suggested answer: A
asked 16/09/2024
Max Archer
38 questions

Question 4

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What is Ethereum?

A.
Another name for Bitcoin
A.
Another name for Bitcoin
Answers
B.
A platform for creating decentralized applications
B.
A platform for creating decentralized applications
Answers
C.
A currency
C.
A currency
Answers
D.
Another name for Blockchain
D.
Another name for Blockchain
Answers
Suggested answer: B

Explanation:

Reference: https://blockgeeks.com/guides/ethereum/

asked 16/09/2024
Jesus Vargas
48 questions

Question 5

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Why is Hyperledger a good business solution over other Blockchains?

A.
Always permissioned and private
A.
Always permissioned and private
Answers
B.
It can employ smart contracts
B.
It can employ smart contracts
Answers
C.
Modular design allowing for flexibility in solution
C.
Modular design allowing for flexibility in solution
Answers
D.
Multiple consensus methods can be chosen for use
D.
Multiple consensus methods can be chosen for use
Answers
E.
All the above
E.
All the above
Answers
Suggested answer: D
asked 16/09/2024
Donald Bell
31 questions

Question 6

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Transparency allows_____________.

A.
a trustless system where users can be certain of a result
A.
a trustless system where users can be certain of a result
Answers
B.
easy iteration through the Blockchain
B.
easy iteration through the Blockchain
Answers
C.
Records on the Blockchain to never be changed
C.
Records on the Blockchain to never be changed
Answers
D.
users on the Blockchain to change data on the Blockchain
D.
users on the Blockchain to change data on the Blockchain
Answers
Suggested answer: A

Explanation:

Reference: https://lisk.io/academy/blockchain-basics/benefits-of-blockchain/why-is-blockchain-trustless

asked 16/09/2024
patricia rosales
34 questions

Question 7

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Blockchain is always a better alternative to a standard database.

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

Explanation:

Reference: https://www.coindesk.com/information/what-is-the-difference-blockchain-and-database

asked 16/09/2024
Tim Dekker
37 questions

Question 8

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How does a private Blockchain differ from a public one? Select all that apply.

A.
A private Blockchain does not use proof of work consensus
A.
A private Blockchain does not use proof of work consensus
Answers
B.
A private Blockchain is more efficient and has faster transaction times
B.
A private Blockchain is more efficient and has faster transaction times
Answers
C.
A private Blockchain is not distributed
C.
A private Blockchain is not distributed
Answers
D.
A private Blockchain often requires the identity of users to be known
D.
A private Blockchain often requires the identity of users to be known
Answers
Suggested answer: D

Explanation:

Reference: https://medium.com/coinmonks/public-vs-private-blockchain-in-a-nutshell-c9fe284fa39f

asked 16/09/2024
Bill Skadden
31 questions

Question 9

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Why is a private Blockchain used instead of a public one?

A.
To limit user access and permissions
A.
To limit user access and permissions
Answers
B.
It is less expensive to develop
B.
It is less expensive to develop
Answers
C.
It requires less mining power than a public Blockchain
C.
It requires less mining power than a public Blockchain
Answers
D.
It requires fewer administrators to manage it
D.
It requires fewer administrators to manage it
Answers
Suggested answer: A

Explanation:

Reference: https://medium.com/coinmonks/public-vs-private-blockchain-in-a-nutshell-c9fe284fa39f

asked 16/09/2024
Andrey Markov
33 questions

Question 10

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A distributed network is always decentralized.

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

Explanation:

Reference: https://stackoverflow.com/questions/49195562/difference-between-a-distributed-and-a-decentralized-network

asked 16/09/2024
Manuel Jong
43 questions
Total 84 questions
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