Blockchain Developer Certification Practice

What is the first step in the flow of a transaction on the ETH network?

1. User inputs ETH address in the front end

2. Transaction object is sent to the network

3. Server waits for transaction confirmation

4. Backend processes the transaction object

The correct answer is: User inputs ETH address in the front end

The first step in the flow of a transaction on the Ethereum network involves the user inputting their ETH address in the front end. This action is crucial because it establishes the account involved in the transaction. The frontend of a decentralized application (dApp) or wallet acts as the interface for users to interact with the blockchain. By entering their ETH address, users indicate where the funds should be sent from or received by, effectively initiating the transaction process. Once this step is completed, the subsequent actions can occur, like creating the transaction object and sending it to the network. However, without the user's input of their address, the transaction cannot proceed, as the network needs to know both the sender's and recipient's addresses to process the transaction accurately. Additionally, other stages such as waiting for confirmation or backend processing are contingent upon the initial input from the user. Thus, this step is foundational in starting a successful transaction on the Ethereum network.