Top 20 interview questions for Blockchain & Supply Chain Professional

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Top 20 interview questions for Supply Chain
Professional

• What is Blockchain Technology?
• It is a distributed ledger technology which
  stores record transaction that is stored in the
  form of blocks and is time-stamped. The stored
  data is not just a transaction but any record
  that has value.

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• What kind of records are stored on Blockchain?
• Blockchain acts as a ledger where data is stored
  digitally and is time-stamped. Businesses can
  make use of these records to track the data and
  its provenance. Hence, it becomes beneficial for
  companies dealing with supply chain management.
  Some of the common records that can be stored on
  DLT are

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• Transaction
• Medical history
• Management records
• Identity management
• Management activities
• documentation
• What benefits does Blockchain have to offer
  supply chain management companies?

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• Supply chain management companies widely use
  Blockchain. It offers the following sets of
  benefits
• Ease of traceability
• Security
• Transparency
• Audibility
• Feedback
• What are the key components of Blockchain?

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• Blockchain comprises of four main components
• Nodes
• Ledger
• Consensus algorithm
• Virtual Machine

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• What are the different types of Blockchain
  ledger?
• There are different types of the ledger the
  first type that we know is public blockchain,
  which is decentralized in nature. Some of the
  other kinds are
• Private Blockchain
• Consortium Blockchain

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• Can we remove blocks from Blockchain?
• It depends on how you handle the removal of
  blocks. You cannot manually remove the block.
  But, in case it gets lost, the Blockchain tries
  to rebuild the database using other peers. Once
  the verification is complete, it can be deleted
  to lower Blockchain size, which is not required.
  You can re-download it again when required. This
  process is called pruning.

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• Define Blockchain identifiers?
• Each block in the Blockchain has a unique
  identifier. It has some hash value associated
  with it. It is a way to show that each block is
  different.

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• What are the different types of consensus
  mechanisms?
• There is a different type of consensus mechanism,
  and they are
• Proof of Work
• Proof of Stake
• Proof of Authority

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• Byzantine Fault Tolerance
• Delegated Proof of Stake
• Proof of Elapsed Time
• Can Blockchain help in internal business
  operations or just for the external supply chain?

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• It is helpful either way. With the help of
  Blockchain you can easily track events of the
  supply chain. You can log internal links on the
  Blockchain database, but here you must know that
  most of Blockchain focus on external
  traceability.

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• 10. What is hyperledger?
• It is an open-source enterprise solution. It is
  an improvised version of Blockchain. It helps in
  better implementation of Blockchain technology,
  thus making it useful for different business
  sectors like supply chain, manufacturing, etc.

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• What is ICO?
• ICO or Initial Coin Offering, which is the same
  as IPO or Initial Public Offering, which is used
  by startups to raise funds. In order to raise
  funds, they sell their platform or service
  tokens.

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• What is dAPP?
• dApp or Decentralised application works on
  Blockchain. Since its an application, more than
  one peer can participate in it, and its
  functioning not controlled by a single entity. It
  is an open-source application.

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• How is dApp different from the app?
• The basis of the functioning of dApp is different
  from the app. Whereas dApp works on a
  decentralized platform, the app doesnt need
  anything of the same kind. Blockchain solutions
  that support dApps ae Ethereum and Neo.

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• What do you know about solidity?
• It is a high-level programming language that
  offers contracts based programming. It is similar
  to JavaScript and is easy to use.

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• What do you know about Metamask?
• It is a web app that connects Ethereum dApps to
  your browser. You dont need a full Ethereum node
  to access dApps.

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• Can you give an example of the use of blockchain
  in supply chain management?
• Blockchain finds a wide number of applications in
  different business niches, including supply chain
  management. There are various apps that help in
  easy tracking of data, which becomes useful in
  supply chain management. With the help of a
  sensor-based tracker, the data of the product
  from the warehouse can be stored on DLT, and then
  you can easily trace the data. Also, once the
  data is fed into the system, it becomes difficult
  to change or alter it, thus making data
  traceability easy and simplified.

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• What are the steps of Blockchain implementation?
• The following six steps are involved in the
  process of Blockchain implementation
• Identifying the requirement
• Screening the ideas
• Study on the security

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• Implementation
• Control and monitoring
• What is a 51 attack?
• In this, the miners hold 50 of Network Hash Rate
  and can manipulate new transactions they also
  have the ability to reverse the transaction that
  eas recently confirmed.

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• What are the key requirements of Business
  Blockchain?
• It required shared ledger., privacy, smart
  contract functionality, and trust.

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• Will Blockchain help in improving supply chain
  management?
• Provenance and data traceability is the core
  feature of Blockchain, and both these features
  form the base for the effective supply chain
  management. With the help of these features,
  tracing the data becomes easier and simplified,
  thus helping to improve the overall functionally
  of supply chain management.

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Blockchain Council Certifications

• You can check out our certifications, and kick
  start your career in the Blockchain space today.
• Certified Blockchain Expert
• Certified Blockchain Developer
• Certified Smart Contract Developer
• Certified Solidity Developer
• Certified Ethereum Developer

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