PwC Interview Questions, Process, and Tips for Experienced

Q1. Complete lifecycle for a blockchain transaction?
Ans. 
The complete lifecycle for a blockchain transaction involves creation, validation, broadcast, inclusion in a block, and confirmation.
• Creation of transaction by sender

• Validation of transaction by network nodes

• Broadcasting of transaction to network

• Inclusion of transaction in a block by miners

• Confirmation of transaction by consensus of network nodes
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Q2. Can we publish our own cusotom blockchain if yes what are the steps for that??
Ans. 
Yes, you can publish your own custom blockchain by following these steps.
• Define the purpose and requirements of your custom blockchain

• Choose a consensus mechanism (e.g. Proof of Work, Proof of Stake)

• Select a suitable blockchain platform (e.g. Ethereum, Hyperledger)

• Develop and deploy the custom blockchain network

• Test the network for functionality and security

• Launch and promote your custom blockchain to attract users and
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Q3. How we estimate gas for a transaction?
Ans. 
Gas for a transaction is estimated based on the computational resources required to execute the transaction on the blockchain network.
• Gas is a unit used to measure the computational work required to process transactions on the blockchain.

• Gas cost is determined by the complexity of the transaction and the amount of data being processed.

• Developers can estimate gas by using tools like the Ethereum Gas Station or by simula...read more
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Q4. Difference between proof of work and proof of stack?
Ans. 
Proof of work requires miners to solve complex mathematical puzzles to validate transactions, while proof of stake selects validators based on the amount of cryptocurrency they hold.
• Proof of work involves miners solving complex mathematical puzzles to validate transactions

• Proof of stake selects validators based on the amount of cryptocurrency they hold

• Proof of work is energy-intensive and requires significant computati...read more
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Q5. Canwe inharit class in solidity?
Ans. 
Yes, inheritance is possible in Solidity.
• Solidity supports inheritance, allowing one contract to inherit properties and methods from another.

• Inheritance is achieved using the 'is' keyword followed by the name of the base contract.

• Child contracts can access the functions and variables of the parent contract.

• Multiple inheritance is also supported in Solidity.
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Q1. Basic understanding of platform
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Q1. Advance level knowledge
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Q1. Salary discussion
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Promise.all vs promise.allsettled how to resolve asynchronus call using promises

Q1. Salary negotiation
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Q2. Education gap between studies
Ans. 
Addressing any gaps in education during the interview process.
• Acknowledge any gaps in education and explain how you have worked to overcome them

• Highlight any additional courses, certifications, or self-study you have done to fill in the gaps

• Discuss how you have applied your knowledge in real-world projects to compensate for any educational shortcomings
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Define ESG metrics and disclosures for a case study of any industry