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Blockchain CBSA Practice Test - Questions Answers, Page 15

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Bitcoin implemented Byzantine Fault Tolerance through a system named:
In common blockchain design, what is one common method to "chain" blocks of data together in order?
A private blockchain like Hyperledger would be the right choice for which scenario:
Blockchains only work to store financial transactions or other exchanges of monetary value.
Which cryptocurrency is also known as "Smart Money" in the blockchain world?
What is the difference in using Go-Ethereum over Ganache?
In Ethereum the difficulty adjustment algorithm is coded in the ___________ file.
What are two challenges with using a Proof of Work algorithm? (Select two.)
Proof of Stake consensus is most often needed for and implemented by:
Consider the following scenario. A startup is building a chat app for smart phones where the messages sent between users are anonymous and get destroyed within 24 hours of being sent. Which architecture would best solve the product need?

Question 141

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What type of "bug" generally occurs when something isn't right according to business requirements?

A.
Business logic
A.
Business logic
Answers
B.
Business Requirements
B.
Business Requirements
Answers
C.
Integration
C.
Integration
Answers
D.
Accessibility
D.
Accessibility
Answers
E.
Security
E.
Security
Answers
Suggested answer: A

Explanation:

Business logic - something isn't right according to business requirements Security - the code is vulnerable to some security exploits Regression - some code updates caused existing features to break Performance - the code is slow or some actions execute extra functions

Question 142

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Ideal bug reports link the bug being reported to a _______________

A.
Business Value
A.
Business Value
Answers
B.
Business Process
B.
Business Process
Answers
C.
Regression Issue
C.
Regression Issue
Answers
D.
Business Target
D.
Business Target
Answers
E.
Progression Issue
E.
Progression Issue
Answers
Suggested answer: A

Question 143

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Which cryptocurrency is also known as "Smart Money" in the blockchain world?

A.
Ether
A.
Ether
Answers
B.
BTC
B.
BTC
Answers
C.
Monero
C.
Monero
Answers
D.
Litecoin
D.
Litecoin
Answers
Suggested answer: A

Explanation:

Ether Foundation of all ERC tokens "Smart Money", money which can be programmed to make decisions for itself

Question 144

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You are considering a cryptocurrency and for your privacy and anonymity are number one priority. Which cryptocurrency should you likely use?

A.
Monero
A.
Monero
Answers
B.
Bitcoin
B.
Bitcoin
Answers
C.
Dash
C.
Dash
Answers
D.
Shadowcoin
D.
Shadowcoin
Answers
E.
Litecoin
E.
Litecoin
Answers
Suggested answer: A

Question 145

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When specifying blockchain technologies, it is important to understand its benefits and its challenges. What would be two challenges of blockchain technology adoption to an enterprise? (Select two.)

A.
Scalability, transaction speed / cost
A.
Scalability, transaction speed / cost
Answers
B.
Tokenization of platforms
B.
Tokenization of platforms
Answers
C.
Distributed
C.
Distributed
Answers
D.
Very New Technology
D.
Very New Technology
Answers
Suggested answer: A, D

Explanation:

What are the drawbacks of Blockchain? Very new technology Constantly changing, evolving Not very many trained resources High cost for trained resources Best practices, recommended patterns still being formed Scalability, transaction speed / cost.

Question 146

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What benefit does HPE Cloud Cruiser provide?

A.
Need for proven, production-ready technology
A.
Need for proven, production-ready technology
Answers
B.
Need a full history of all application data
B.
Need a full history of all application data
Answers
C.
Require top-notch performance
C.
Require top-notch performance
Answers
D.
Need to avoid data duplication or redundancy
D.
Need to avoid data duplication or redundancy
Answers
Suggested answer: A

Question 147

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The word "Drapp" or "DApp" is most commonly understood to mean what?

A.
Distributed Application
A.
Distributed Application
Answers
B.
Distributed Apps and Programs
B.
Distributed Apps and Programs
Answers
C.
Decentralized Application
C.
Decentralized Application
Answers
D.
Distributed Autonomous Application
D.
Distributed Autonomous Application
Answers
Suggested answer: C

Explanation:

Reference: https://medium.com/swlh/understanding-dapps-decentralized-applications-8f3668ebdc9a

Question 148

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Which of these reasons is a good reason to choose a conventional database over blockchain to store application data?

A.
Centralization is to be avoided
A.
Centralization is to be avoided
Answers
B.
Databases should never be used over blockchain
B.
Databases should never be used over blockchain
Answers
C.
Full history is needed for all data
C.
Full history is needed for all data
Answers
D.
High performance is required
D.
High performance is required
Answers
Suggested answer: D

Question 149

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Which of the following scenarios and databases is least suited to be utilized by a blockchain solution?

A.
Scenario: Law enforcement system; Dataset: Criminal Arrests, Warrants for Arrest, Conviction Date
A.
Scenario: Law enforcement system; Dataset: Criminal Arrests, Warrants for Arrest, Conviction Date
Answers
B.
Scenario: An Email campaign service; Dataset: Recipient Email, From Email; Subject, Body
B.
Scenario: An Email campaign service; Dataset: Recipient Email, From Email; Subject, Body
Answers
C.
Scenario: A family filter wifi router; Dataset: Websites Visited, Websites Blocked, Download History
C.
Scenario: A family filter wifi router; Dataset: Websites Visited, Websites Blocked, Download History
Answers
D.
Scenario: Credit score app; Dataset: Credit Score, Hard Inquiries; Collections, Date Removed, Date Added
D.
Scenario: Credit score app; Dataset: Credit Score, Hard Inquiries; Collections, Date Removed, Date Added
Answers
Suggested answer: A

Question 150

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Blockchain systems can offer what advantage over centralized systems?

A.
They are much easier to maintain and update
A.
They are much easier to maintain and update
Answers
B.
They have significantly higher transaction speeds
B.
They have significantly higher transaction speeds
Answers
C.
Their distributed ledger systems are more secure and immutable
C.
Their distributed ledger systems are more secure and immutable
Answers
D.
All of the above
D.
All of the above
Answers
Suggested answer: C
Total 230 questions
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