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Block chain Essentials Cognitive class Exam Answers:-

 Course Name :- Blockchain Essentials

Module 1 :- What is Blockchain?

Question 1 : What is a core aim of blockchain for business implementations?

  • Provide irrefutable proof of a set of facts
  • Share information anonymously across a business network
  • Optimize mining of cryptocurrency
  • Reduce disputes in the business network by allowing incorrect transactions to be deleted

Module 2:- Example Blockchain  Network

Question 1 : What is the purpose of the IBM Food Trust blockchain?

  • Tracking shipping containers
  • Ensuring transparency in food
  • Making global payments more efficient
  • Decentralized identity

Module 3:- IBM and Blockchin

Question 1 : Which best describes Hyperledger?

  • An IBM project to build blockchain technologies for business
  • An open source collaborative effort to advance the use of cryptocurrencies in business
  • An open source collaborative effort to advance cross-industry blockchain technologies
  • A single technology stack to implement a blockchain

Blockchain Essentials Cognitive Class Final Exam Answers:-

Question 1: Which best describes an asset that can be stored on a blockchain?

  • Anything of value to a participant in a business network
  • The representation of a change in state of a tracked object
  • A participant of a business transaction
  • A shared, replicated ledger

Question 2 : What is a ledger?

  • A system of record that logs the inputs and outputs of a business
  • Anything of value to a business
  • The particulars of a business stored by a regulator
  • The system used by publicly listed companies for shareholder communications

Question 3 :What qualities of service does blockchain give to a business network?

  • Efficiency, dynamicity, cognitive processes and reliability
  • Centralization, social enabled, Internet of Things, Web 3.0
  • Consensus, provenance, immutability, and finality
  • Scalability, reliability, security, maintainability

Question 4 : Which of the following best describes a blockchain network for trusted identity?

  • A decentralized approach that establishes trust and puts the end user in control
  • A centralized repository for storing personally identifiable information (PII)
  • An organization wanting to verify identity information can do so without the user’s involvement
  • A network where personally identifiable information (PII) is distributed for resiliency and recovery

Question 5: When designing and building a solution like TradeLens or IBM Food Trust it is important that …

  • only those participants that are running nodes in the blockchain network gain benefit
  • all participants have equal permissions to use the platform
  • all participants in the ecosystem gain benefit from using the platform
  • regulators can update transactions that are submitted in error

Question 6 : Who would often be considered a key stakeholder when implementing a blockchain for business?

  • Miners
  • Cryptocurrency exchanges
  • Token factories
  • Regulators

Question 7 : What does Bitcoin have in common with blockchain for business?

  • They both implement cryptographic mining
  • They both use Proof of Work consensus
  • They both provide cryptographic proof that transactions happened
  • They are both cryptocurrencies

Question 8: Hyperledger Fabric emphasizes which features?

  • Proof-of-work, scalability, resilience, smart contracts
  • Smart contracts, consensus, confidentiality and scalability
  • Cryptocurrency, confidentiality, resilience, anonymity
  • Smart contracts, consensus, cryptocurrency and scalability

Question 9 : Where can IBM Blockchain Platform networks be deployed?

  • Across multiple vendors’ clouds, but all network participants must agree on the same cloud provider.
  • Across multiple IBM Cloud and onpremises infrastructures only
  • To on-premises infrastructures only
  • Across multiple cloud and on-premises infrastructures, including different vendors’ clouds

Question 10 : What is the IBM Blockchain Platform?

  • A set of tools for building, operating a growing a blockchain network.
  • A platform to integrate Ethereum, Bitcoin and Hyperledger Fabric blockchains
  • A tool to submit feature enhancements and bug reports to Hyperledger Fabric
  • A set of tools to manage cryptocurrency wallets

Question 11 : Which of the following fact(s) about business networks is/are true?

  • Business networks can span geographies and regulatory boundaries
  • A single business network can include customers, suppliers, banks and partners
  • Wealth is generated by the flow of goods and services across a business network
  • All of these facts are true

Question 12 : Which of the following best describes the Hyperledger project?

  • A collection of business blockchain frameworks
  • A collection of business blockchain tools
  • A structured community including: governance, technical, legal and marketing
  • All of these facts are true

Question 13 : What does the “provenance” quality of service provide to blockchain?

  • Agreement that a transaction occurred
  • History of transactions
  • An append-only data structure
  • Transactions cannot be backed out

Question 14 : Which of the following facts about assets is true?

  • Assets are anything that is capable of being owned or controlled to produce value
  • Assets are always tangible
  • Cash is not considered an asset, because it is anonymous
  • The value of an asset cannot change over the course of its lifecycle

Question 15: Which of the following is the primary benefit of TradeLens?

  • TradeLens allows banks to send and settle payments with finality in seconds
  • TradeLens provides end-to-end traceability of food in the supply chain
  • TradeLens provides shared visibility and state for container shipments
  • TradeLens enables verifiable claims through decentralized identity

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