Ethereum Essentials

Test your knowledge on Ethereum's core concepts, including smart contracts, the consensus mechanism after the Merge, and the role of gas in transactions.

What is 'gas' in the context of Ethereum?

The fuel used to power Ethereum mining machines

The number of transactions Ethereum can process in a second

A reward given to miners for verifying transactions

The computational work required to perform operations on the Ethereum network

Which consensus mechanism did Ethereum switch to after the 'Merge' update in 2022?

Proof of Stake (PoS)

Proof of Work (PoW)

Delegated Proof of Stake (DPoS)

Proof of Capacity (PoC)