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Lesson # 5
Understanding and Avoiding MEV (Frontrunning)
Blockchain Basics
1. What is a “sandwich attack” in the context of MEV?
A. A smart contract that splits your tokens in two
B. When your trade is duplicated across chains
C. A bot places a buy before and a sell after your transaction to profit
D. When a DEX charges extra for gas
2. Which of the following best reduces exposure to MEV bots?
A. Swapping only during weekends
B. Using private transaction relays like Flashbots
C. Setting low slippage tolerance
D. Using centralized exchanges
3. What is the downside of increasing gas fees to speed up a trade?
A. It guarantees MEV protection
B. It only works on Layer 2s
C. It raises transaction costs and doesn’t fully prevent MEV
D. It delays confirmation time
4. How do DEX aggregators help reduce MEV risk?
A. By converting trades to fiat
B. By increasing block time
C. By splitting trades and using private routing
D. By disabling gas fees
5. When should you consider combining high gas settings and aggregator protection?
A. When trading on Binance Smart Chain
B. When farming LP tokens
C. When executing large or high-risk trades
D. When trading stablecoins only