Senior Smart Contracts

Test your Senior-level Blockchain Cryptocurrency Smart Contracts skills in Emerging Technologies. This timed assessment evaluates your expertise in Information Technology.

Duration: 5 minutes

•40 questions

Time Remaining: 05:00

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40 questions remaining

Question 1 of 40Assessment

When optimizing for gas, why is it generally more efficient to use uint256 instead of uint8 for state variables in the EVM?

A. The EVM can only perform arithmetic operations on 8-bit integers, requiring 256-bit conversion.

B. The EVM operates on 32-byte words, so smaller types require additional opcodes to mask and sign-extend the data.

C. Uint256 variables are stored in the stack while uint8 variables are forced into high-cost contract storage.

D. Smaller integer types trigger a safety check that consumes significantly more gas during the validation phase.

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