CBBF: Certified Blockchain Business Foundations - Free download from Exam Files

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

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

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

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

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

Which of the following are practical use cases for Blockchain?

Voting
A video sharing website
Medical records
Identity management
All of the above

Correct answer: E

Explanation:

Reference: https://www.mycryptopedia.com/16-promising-blockchain-use-cases/

Which item(s) make up a block header?

The hash of the Merkle root and the header of the previous block
The hash of every transaction in a specific block and the next block
The time stamp of the block and the genesis block hash
The hash of the previous block

Correct answer: D

Explanation:

Reference: https://www.cryptocompare.com/coins/guides/what-is-a-block-header-in-bitcoin/

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

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

Blockchain applications can provide____________________.

the elimination of intermediaries
building more trust between trusted parties
collaboration between trusted parties
better cooperation between banks

Correct answer: A

Vendor:	Blockchain
Exam Code:	CBBF
Exam Name:	Certified Blockchain Business Foundations
Date:	Jun 06, 2019
File Size:	17 KB

Download Certified Blockchain Business Foundations.CBBF.TestKing.2019-06-06.33q.vcex

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