Certified Blockchain Developer – Ethereum (CBDE) — Question 1

The nonce-field in a transaction is used:

Answer options

• A. to protect against replay attacks.
• B. to have an additional checksum for transactions.
• C. to sum up all ethers sent from that address.

Correct answer: A

Explanation

The nonce field is critical for preventing replay attacks, as it ensures that each transaction is unique and can only be executed once. The other options, such as providing a checksum or summing ethers, do not accurately describe the function of the nonce in transaction security.