Easy-level Cosmos chain operation interview questions covering chain operations, algorithms, keys, validators, and modules. Q1: What are the key components of a Cosmos chain? Answer: Chain Components: Key Components: Tendermint Core: Consensus and networking Byzantine Fault Tolerant (BFT) consensus P2P networking Block …

Hard-level Cosmos chain operation questions covering advanced algorithms, performance optimization, and complex validator management. Q1: How do you implement advanced consensus optimizations and reduce latency? Answer: Optimistic Execution: 1type OptimisticExecutor struct { 2 pendingTxs map[string]*PendingTx 3 …

Medium-level Cosmos chain operation questions covering advanced chain operations, consensus algorithms, and validator management. Q1: How does the Tendermint consensus algorithm ensure safety and liveness? Answer: Safety Properties: Validity: Only valid blocks are committed Agreement: All honest validators commit same …

Easy-level Cosmos SDK interview questions covering chain code, SDK basics, and Ignite CLI. Q1: What is Cosmos SDK and how does it work? Answer: Cosmos SDK is a framework for building blockchain applications in Go. It provides modular components that developers can combine to create custom blockchains. Key Components: …

Hard-level Cosmos SDK interview questions covering advanced SDK internals, performance optimization, and complex module design. Q1: How do you implement a custom ABCI application with advanced state management? Answer: Custom BaseApp: 1package app 2 3import ( 4 "github.com/cosmos/cosmos-sdk/baseapp" 5 …

Medium-level Cosmos SDK interview questions covering advanced module development, SDK internals, and Ignite customization. Q1: How do you implement custom state transitions and state machines in a module? Answer: State Machine Pattern: 1package keeper 2 3import ( 4 sdk "github.com/cosmos/cosmos-sdk/types" 5) 6 …

Tendermint consensus algorithm interview questions covering the Byzantine Fault Tolerant consensus used in Cosmos chains. Q1: How does Tendermint consensus work? Answer: Tendermint is a Byzantine Fault Tolerant consensus algorithm used in Cosmos chains. Sequence Diagram: Overall Flow Diagram: Individual Node Decision …

Core principles, consensus mechanisms, and key innovations of major blockchain platforms. Bitcoin (BTC) Core Principles Digital gold: Store of value, not programmable Decentralization: ~15,000 full nodes worldwide Security: Most secure blockchain (highest hash rate) Simplicity: Intentionally limited functionality …

Practical Cosmos SDK operations including governance proposals, multisig accounts, and Cosmovisor setup. Governance Proposals Create Text Governance Proposal 1# Create proposal JSON 2cat > proposal.json <<EOF 3{ 4 "title": "Enable IBC Transfer", 5 "description": "This proposal …

Ignite CLI commands for building Cosmos SDK blockchains. Quick reference for blockchain development workflow. Installation 1# Install Ignite CLI 2curl https://get.ignite.com/cli! | bash 3 4# Or with Homebrew (macOS) 5brew install ignite 6 7# Verify installation 8ignite version Scaffold New Blockchain 1# Create new …