ArtofBlockchain

Difficulty - Medium

Total Plays - 5

Allowed Time - 10 sec

Best time - 3.871

Which Solidity feature is riskiest if misused with delegatecall?

Tip: Click "Play" to reveal options and start playing.

#A

#B

#C

#D

Explanation:
Delegatecall shares storage between contracts; mismatched layouts can overwrite variables and cause exploits.

Leaderboard
Difficulty - Medium

Total Plays - 4

Allowed Time - 10 sec

Best time - 1.498

Which metric best shows DAO member loyalty post-airdrop?

Tip: Click "Play" to reveal options and start playing.

#A

#B

#C

#D

Explanation:
Retention captures wallet-level engagement and recurring activity — a Tier-2 metric for real community stickiness.

Leaderboard
Difficulty - Medium

Total Plays - 5

Allowed Time - 10 sec

Best time - 10

Which testing tool supports property-based fuzzing for Solidity?

Tip: Click "Play" to reveal options and start playing.

#A

#B

#C

#D

Explanation:
Echidna auto-generates random inputs to stress invariants, uncovering deep logic vulnerabilities.

Leaderboard
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