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Update FAQ.md

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@ -87,7 +87,7 @@ Light sync relies on full nodes that serve data to light clients. Historically,
### Why do I need another client in addition to Geth?
Historically, running Geth was enough to turn a computer into an Ethereum node. However, when Ethereum transitioned to proof-of-stake, responsibility for consensus logic and block gossip was handed over to a separate consensus layer client. However, Geth still handles transactions and state management. When the consensus client is required to create a new block, it requests Geth to gather transactions from the transaction pool, execute them to compute a state transition and pass this information back to the consensus client. When the consensus client receives a new block from a peer, it passes the transactions to Geth to re-execute to verify the proposed state-transition. There is a clear separationm of concerns between the two clients, meaning that both are required for a computer function as an Ethereum node.
Historically, running Geth was enough to turn a computer into an Ethereum node. However, when Ethereum transitioned to proof-of-stake, responsibility for consensus logic and block gossip was handed over to a separate consensus layer client. However, Geth still handles transactions and state management. When the consensus client is required to create a new block, it requests Geth to gather transactions from the transaction pool, execute them to compute a state transition and pass this information back to the consensus client. When the consensus client receives a new block from a peer, it passes the transactions to Geth to re-execute to verify the proposed state-transition. There is a clear separation of concerns between the two clients, meaning that both are required for a computer function as an Ethereum node.
If you do not run a consensus client, your consensus client is not working or not correctly connected to Geth, you will see the following error in the Geth logs: `WARN [09-07|08:48:00.149] Post-merge network, but no beacon client seen. Please launch one to follow the chain!`
@ -95,7 +95,7 @@ If you do not run a consensus client, your consensus client is not working or no
Staking is how node operators participate in proof-of-stake based consensus. Staking requires validators to deposit 32 ETH to a smart contract and run validator software connected to their node. The validator software broadcasts a vote ("attestation") in favour of checkpoint blocks that it determines to be in the canonical blockchain. The corrct chain is then the one with the greatest accumulation of votes, weighted by the validators stake (up to a maximum of 32 ETH). Geth, as an execution client, does not directly handle consensus logic but it does provide the node with the execution and state-management tools required to validate incoming blocks. Validators are also occasionally picked to propose the next block broadcast across the network. In this case Geth's role is to bundle transactions it has received over the execution layer gossip network, pass them to the consensus client to be included in the block and execute them to determine the resulting state change.
It is entirely possible to run a node without staking any ETH. In this case the node runs the execution and consensus clients but not the validator software. In order to participate in consensus and earn ETH rewards, the node must run an execution cleint, consensus client and a validator. The validator software comes bundled with the consensus client.
It is entirely possible to run a node without staking any ETH. In this case the node runs the execution and consensus clients but not the validator software. In order to participate in consensus and earn ETH rewards, the node must run an execution client, consensus client and a validator. The validator software comes bundled with the consensus client.
For step-by-step instruction for staking and spinning up a validating node, see [ethereum.org](https://ethereum.org/en/staking/) or get started on the Ethereum Foundation's [Staking Launchpad](https://launchpad.ethereum.org/).