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Sheza Henry

@JopTtI2 • 1mo

How Should I Answer DeFi Interview Questions on Securing Price Oracles?

What’s the best way to answer DeFi interview questions about securing price oracles? I’m getting ready for a technical interview with a DeFi protocol and want to go beyond the...

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Shubhada Pande

@ShubhadaJP • 1mo

Learn Zero-Knowledge Proofs (ZKPs) in 30 Days: A Beginner’s Roadmap

Learn Zero Knowledge Proofs in 30 days by following a structured roadmap: master cryptography, build ZK circuits, and apply zero knowledge to real blockchain projects. This guide breaks down the...

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Shubhada Pande

@ShubhadaJP • 1mo

Zero Knowledge Proof Explained: Privacy, zk-SNARKs, and Blockchain Applications

Zero Knowledge Proof (ZKP) enables blockchain users to verify transactions without revealing sensitive data. This cryptographic method solves blockchain’s privacy-scalability conflict by validating information confidentially while maintaining decentralization.How Zero Knowledge...

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Difficulty - Medium

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What does OpenZeppelin provide?

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Explanation:
OpenZeppelin offers audited, reusable smart contract templates, like ERC-20 and ERC-721 implementations. It enhances security and saves development time.

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Difficulty - Medium

Total Plays - 24

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Best time - 1.128 sec

What does Ganache provide in blockchain?

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Ganache creates a local Ethereum blockchain for development and testing. It allows developers to deploy contracts and simulate transactions without real ETH.

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Difficulty - Medium

Total Plays - 21

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Best time - 0.081 sec

What is Web3.js used for?

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Explanation:
Web3.js is a JavaScript library for interacting with Ethereum, enabling dApps to communicate with nodes. It handles tasks like sending transactions and reading blockchain data.

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Difficulty - Medium

Total Plays - 18

Allowed Time - 10 sec

Best time - 1.631 sec

What is a token standard?

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Explanation:
A token standard, like ERC-20, defines rules for creating tokens on a blockchain. It ensures compatibility for cross-chain transfers and DeFi applications.

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Difficulty - Medium

Total Plays - 20

Allowed Time - 10 sec

Best time - 1.130 sec

What enables cross-chain communication?

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Explanation:
Interoperability protocols allow different blockchains to communicate and share data or assets seamlessly. Examples include Polkadot and Cosmos, which facilitate cross-chain transactions.

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Roger Zoe

@ofh3VYy • 1mo

What should I study next to become smart contract auditor

I know the MERN stack and have already built a few Solidity-based projects like crowdfunding and lottery apps. I now want to become a smart contract auditor and eventually earn...

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Ava Martin

@YAD7yVD • 1mo

What is blockchain developer vs engineer?

What is the difference between a blockchain developer and a blockchain engineer?I often see both these titles used in job descriptions, especially on LinkedIn and job portals, but I’m not...

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Bondan S

@aNuFIlC • 3w

Common Blockchain Coding Challenges in Smart Contract Developer Interviews

What coding challenges come up in blockchain and smart contract developer interviews? I’m graduating in computer science next month. I interned for six months on a dApp, but I still...

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Shubhada Pande

@ShubhadaJP • 1mo

Top 10 In-Demand Blockchain Skills and Associated Job Roles for 2025

Blockchain tech is transforming industries worldwide, from finance and healthcare to supply chain and digital identity. As the ecosystem matures, the demand for specialized blockchain professionals is skyrocketing.LinkedIn and Glassdoor...

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Difficulty - Medium

Total Plays - 19

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Best time - 1.626 sec

What Rust feature optimizes blockchain transaction processing?

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Explanation:
Rust’s async programming, with crates like Tokio, enables high-throughput transaction processing in blockchain nodes. It supports concurrent handling of network requests and validations.

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Difficulty - Medium

Total Plays - 22

Allowed Time - 10 sec

Best time - 1.375 sec

Why is Rust preferred for high-performance blockchain runtimes?

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Explanation:
Rust’s zero-cost abstractions allow developers to write high-level code without runtime performance penalties, ideal for blockchain runtimes. This ensures efficient execution of smart contracts and consensus algorithms.

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Difficulty - Medium

Total Plays - 17

Allowed Time - 10 sec

Best time - 1.930 sec

What is the purpose of the #[account] macro in Anchor?

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Explanation:
The #[account] macro in Anchor is used to define and validate account structures for Solana smart contracts. It simplifies account management and ensures data integrity.

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