ZkSync

1. What guarantees are not provided by zkRollup architecture?

• zkRollup rigorously doesn`t inherit the underlying L1's security guarantees

• If the validator(s) quit cooperating, users can always collect their money from the zkRollup smart contract

• It is not necessary for consumers or a single reliable third party to be online to keep track of zkRollup blocks and stop fraud

Type a right word: By moving computation and state storage off-chain, ______scaling solutions known as zero-knowledge rollups (ZK-rollups) boost throughput on the Ethereum Mainnet

4. HOW DO ZK-ROLLUPS RELATE TO ETH?

• Inside the Mainnet, ZK-rollups carry out transactions, but they recurrently doesn`t commit off-chain transaction batches to an on-chain rollup contract

• An off-chain protocol called a ZK-rollup chain runs on top of the Eth blockchain and is controlled by on-chain smart contracts

• Ethereum serves as the base layer or "layer 2" for the ZK-rollup

"____ scaling solutions" like ZK-rollups are off-chain protocols that run independently but rely on Ethereum for security.

6. What elements does make up the main architecture of the ZK-rollup?

• Off-chain virtual machine, Validity proofs, transitions

• On-chain contracts

• the main contract, the verifier contract, VM

7. Why don't ZK-rollups need to reveal a lot of transaction data on-chain?

• Because state transitions' legitimacy has previously been verified by validity proofs.

• Because on-chain isn`t required for users to interact with the rollup

• It needs to reveal a lot of transaction data on-chain