Free Download CBBF Examp Dump: Blockchain.CBBF.ActualTests.2019-08-01.43q.vcex

Question 1

Transparency allows_____________.

a trustless system where users can be certain of a result
easy iteration through the Blockchain
Records on the Blockchain to never be changed
users on the Blockchain to change data on the Blockchain

Correct answer: A

Explanation:

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

Question 2

Blockchain is always a better alternative to a standard database.

True
False

Correct answer: B

Explanation:

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

Question 3

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

A private Blockchain does not use proof of work consensus
A private Blockchain is more efficient and has faster transaction times
A private Blockchain is not distributed
A private Blockchain often requires the identity of users to be known

Correct answer: D

Explanation:

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

Question 4

A distributed network is always decentralized.

True
False

Correct answer: B

Explanation:

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

Question 5

Blockchains work best when they are____________________.

combined with other technologies
used for financial applications
used alone
used as an alternative to a database

Correct answer: B

Explanation:

Question 6

What is a hash function?

A one-way function that converts input to a unique string output
A function that stores data behind a key
A two-way function used for condensing information
The block-ID of the block
All the above

Correct answer: D

Question 7

How is Blockchain benefiting voting?

By revealing the identity of each voter and who or what they voted for
By controlling who gets to vote
By only allowing a certain number of votes per person
By allowing voters to trust their vote has been counted

Correct answer: D

Question 8

Which of the following statements sums up the Proof of Work consensus process?

Miners complete to find a nonce results in a hash that starts with a predetermined number of leading zeros.
Miners put up a stake. A miner is then selected based on stake value to add a new block to the chain. If a miner adds an invalid block to the chain, that miner loses their stake.
All nodes agree on the data of the transaction.
Miners send assets to an inactive address. This process selects the next owner of a block.

Correct answer: C

Explanation:

Reference: https://www.nichanank.com/blog/2018/5/23/consensus-algorithms-pow

Question 9

The Ethereum Blockchain provides a/an _____________ virtual machine.

Windows compatible
energy efficient
Linux compatible
turing-complete

Correct answer: D

Explanation:

Reference: https://www.mycryptopedia.com/ethereum-virtual-machine-explained/

Question 10

Which Blockchain protocol uses Proof of Work Consensus? Select all that apply

Hyperledger
Corda
Bitcoin
Ethereum
All of the above

Correct answer: ACD

Explanation:

Exam	Certified Blockchain Business Foundations
Number	CBBF
File Name	Blockchain.CBBF.ActualTests.2019-08-01.43q.vcex
Size	20 KB
Posted	Aug 01, 2019
Download	Blockchain.CBBF.ActualTests.2019-08-01.43q.vcex

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