Besu Certified Professional study guide
Besu Certified Professional · Work through your exam, one topic at a time.
The Besu Certified Professional credential is aimed at engineers who run or build on Hyperledger Besu, the Apache-2.0 licensed Java Ethereum client maintained under the Hyperledger Foundation. It suits DevOps and platform engineers operating validator or RPC nodes in permissioned consortia, protocol engineers configuring private networks, and smart contract developers who need to reason about gas, tracing, and privacy-enabled deployments. The Besu Certified Professional study guide has 9 sections and about 3,059 words.
01Hyperledger Besu Architecture and Deployment
This domain tests whether you understand how Besu is packaged, how a node process is configured, and where its state lives on disk. Besu is an Apache-2.0 Ethereum client written in Java that runs public Ethereum and private consortium networks from the same binary, so most deployment questions reduce to which flags, which genesis, and which data directory.
379 words, about 2 min02Network Configuration and Genesis Files
Genesis defines the chain. Every node must load a byte-identical file; a single differing field breaks peering or block acceptance.
361 words, about 2 min03Consensus Protocols (PoW, PoA, IBFT 2.0, QBFT)
This domain tests protocol selection and the arithmetic of fault tolerance. Besu supports Ethash proof of work, Clique proof of authority, and the BFT protocols IBFT 2.0 and QBFT.
330 words, about 2 min04Node Operations, Monitoring, and Troubleshooting
This domain tests day-two operations: getting a node to peer, observing it, and diagnosing why it stopped producing or accepting blocks. Raise verbosity with --logging or supply log4j configuration via --logging-config-file .
309 words, about 2 min05JSON-RPC API and EVM Interaction
This domain tests exposing the API safely and using the right method for reads, writes and tracing. Besu serves JSON-RPC over HTTP and WebSocket, plus GraphQL.
330 words, about 2 min06Privacy and Permissioning
This domain tests two access-control layers: private transactions and network/account permissioning. Verify the Besu version under test, because privacy support has been deprecated and removed from recent releases.
324 words, about 2 min07Smart Contract Development and Deployment
This domain tests the full path from Solidity source to a deployed contract on a Besu network, and the transaction mechanics that make deployment succeed or fail. Compilation produces ABI and bytecode.
343 words, about 2 min08Security, Key Management, and TLS
This domain tests protecting keys and endpoints. Besu uses three distinct key types, and confusing them is both a security and an operational failure.
341 words, about 2 min09Upgrades, Migration, and Interoperability
This domain tests changing a running network safely: upgrading Besu, moving from another client, and interoperating with other nodes and a consensus layer. Upgrade sequence: read release notes for breaking changes such as a higher JDK, storage format changes or removed features; back up the data directory, genesis and config; stop the node cleanly; swap the binary; start; verify block height and peer count.
342 words, about 2 min