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I applied via Approached by Company and was interviewed in Dec 2023. There were 2 interview rounds.
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
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
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...
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...
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.
I applied via Campus Placement and was interviewed before Nov 2020. There was 1 interview round.
Program to calculate factorial
Use a loop to multiply the numbers from 1 to n
Handle edge cases like 0 and negative numbers
Use recursion for a more elegant solution
I applied via Recruitment Consulltant and was interviewed before Jan 2021. There were 2 interview rounds.
Python coding test
I applied via Recruitment Consulltant and was interviewed before Feb 2021. There were 2 interview rounds.
Cofing round on hackerearth
Case study with algo and db design
I applied via Naukri.com and was interviewed in Nov 2020. There was 1 interview round.
Answering questions related to REST API, Spring MVC, Spring Boot, abstract class, and interfaces.
REST API is a set of rules for building web services. It uses HTTP methods to access resources.
Spring MVC is a framework for building web applications using the Model-View-Controller architecture.
Spring Boot is a framework for building standalone, production-grade Spring-based applications.
An abstract class is a class that ...
I applied via Naukri.com and was interviewed in Apr 2020. There was 1 interview round.
Synchronous means happening at the same time, while asynchronous means not happening at the same time.
Synchronous operations occur in real-time, while asynchronous operations can be delayed or queued.
Synchronous operations block the program until they are completed, while asynchronous operations allow the program to continue running.
Examples of synchronous operations include function calls and loops, while examples of ...
CTE and temp table usage in SQL
Use CTE for recursive queries and complex subqueries
Use temp tables for large data sets and complex queries
CTE is more efficient for small data sets
Temp tables can be indexed for faster performance
Consider the scope and lifespan of the data when choosing between CTE and temp table
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