Add Learn Quiz: Gas Fees

[SupaMega24]

Page URL

https://ethereum.org/en/gas/

Question content

1. What are gas fees?

A. A fee associated with transactions and smart contract operations
B. The amount of gas used to perform an operation, multiplied by the cost per unit of gas
C. A payment that includes a priority fee to potentially expedite transaction processing
D. All of the above

Correct Answer: D

Gas fees encompass all these aspects: they compensate for computation (B), apply to both transactions and smart contracts (A), and can include priority fees for faster inclusion (C).

Section Reference: What are gas fees?

Explanation:

• A. Gas fees represent the cost of transactions and smart contract operations
• B. While gas is a unit that measures computation, gas fees are the actual cost required to pay for that computation.
• C. The total gas fee includes a base fee and a priority fee that can influence transaction processing speed

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2. Which of the following is the LEAST effective strategy for reducing the cost of gas?

A. Executing transactions during low-congestion periods

B. Waiting for gas prices to decrease

C. Using layer-2 chains for lower fees

D. Using complex smart contract logic that increases computational requirements

Correct answer: D

Complex smart contract logic increases gas costs by requiring more computation. Efficient design minimizes steps, storage, and redundant operations to reduce fees.

Section Reference: How do I pay less gas?

Explanation of incorrect answers:

• A: Timing transactions during off-peak hours can lower gas costs.
• B: Waiting for gas prices to decrease is a valid strategy since gas fluctuates based on congestion.
• C: Layer-2 solutions reduce fees and are an effective way to save on gas.

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3. What causes gas fees to be high?

A. Network computation exceeding a specific threshold

B. Validators increasing the base fee manually

C. Well-written, optimized smart contracts

D. A lack of available ETH on the network

Correct answer: A

When computation on Ethereum exceeds a threshold, gas fees increase, especially during high activity periods like dApps or NFT drops.

Section reference: What causes high gas fees?

Explanation of incorrect answers:

• B: Validators do not manually set base fees; they are determined by the protocol.
• C: Well written smart contract logic such as efficient use of storage and loops can lead to lower gas consumption.
• D: Gas fees are not affected by the amount of ETH available on the network.

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4. How do gas fees help keep Ethereum secure?

A. By incentivizing validators to act honestly

B. By disincentivizing spam and malicious activity with financial costs

C. By ensuring transactions are processed in order of priority

D. By increasing the total amount of ETH in circulation

Correct answer: B

Gas fees make spam or malicious activity expensive, preventing abuse and helping maintain network stability.

Section reference: Why do we need gas?

Explanation of incorrect Answers:

• A: Validators are compensated in a few ways, but gas fees primarily discourage spam and excessive resource use.
• C: Priority can be determined by the tip, not the gas fees themselves.
• D: The base fee (part of the total gas fee) is burned, reducing ETH in circulation, not increasing it

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5. How are gas fees calculated?

A. Gas price × transaction size

B. Units of gas used × (base fee + priority fee)

C. Block size × validator tip cap

D. Base fee + priority fee + tip

Correct answer: B

Gas fees are determined using the formula: units of gas used × (base fee + priority fee).

Section reference: How is gas calculated?

Explanation of incorrect answers:

• A: Gas fees are based on computation, not transaction size.
• C: Block size does not directly factor into this formula.
• D: The base fee and priority fee are part of the formula; the tip is the priority fee.

Would you like to work on this issue?

• Yes
• No

[pheobeayo]

Can I give this a shot?

[github-actions]

This issue is stale because it has been open 30 days with no activity.

[isabelladebrito]

Thanks for submitting the quiz, @SupaMega24!

@wackerow can you please review the content and let us know the next steps?

[SupaMega24]

Thanks for submitting the quiz, @SupaMega24!

@wackerow can you please review the content and let us know the next steps?

@isabelladebrito Thank you for getting back to me on this. I'm keen to do the pull request once approved. Also, I'd love to do more of these and contribute other content.

[corwintines]

Thanks @SupaMega24

Just leaving some feedback on this.

Question 1: A,B, and C are all correct for this.

• A is true because smart contract accounts exist such as Safe
• B is true because it gas fees pay for operations
• C is true because the priority fee is part of the total gas fee paid

Question 2:

• I think A should be changed, but this speaks more to content on the page since you pulled it from there.
• The correct answer D is a bit ambiguous.

Question 3:

• I think A and C are too similar. I think they would both be correct based on the question as it is.

Overall the other questions seem ok.

[SupaMega24]

Hi @corwintines !

Thank you for the feedback. Looking back, I can definitely see how somethings were not very clear. To be honest, I was trying to stay strictly by the content that was on the page.

Perhaps I should take a look at enhancing the article itself 🤔

At any rate, I have updated the quiz to reflect your suggestions while trying to stay within the scope of the page content. I hope this is a bit better.

Thanks again for your feedback.

[wackerow]

Hey @SupaMega24! Gonna give this a review now.. to your last comment, generally things it's best to stick to the content on the page... BUT if/when that highlights any issues, ideally we queue up a separate task to address those.

[wackerow]

Great job @SupaMega24!.. dropping a review here:

1

• Can you clarify which explanations are for which answers? Just want to make sure each has it's own concise explanation.
  For "all of the above"-style questions the "wrong" explanations usually just note that "this is correct, but not the only one..." or something like that.
• "like Safe accounts" -- would remove Safe product mention
• Little hesitant on this overall from a technical stand-point, since "gas" is different than "gas price". "Gas" being the measure of computation for a specific operation (opcode-specific), while the "gas price" is the amount of ETH being paid for each unit of gas, with a minimum required for the tx to be valid ("base fee"). This is probably all fine but maybe @konopkja can chime in from a UX-balance stand point.
• Noting that since the question asks, "what ARE gas fees" (question about defining something), where we then provide a definition of gas itself (B) but not gas "fees", and also an example of gas fees (A), and then sort-of a description of then in (C)... with the correct answer being labeled as all of them.

2

• General quiz-writing technique, consider capitalizing critical logic terms in the question stem to improve clarity, ie "LEAST"
• Explanation of correct answer is great!... Just way too long 😄 Consider something like: "Gas fees are proportional to the complexity of computation. Simpler changes, such as an ETH transfer, will cost less than more complex actions like deploying a complex onchain game."

3

• Consider dropping "Higher" from the beginning of (A)
• "Well written" -> "Well-written"

4

• "Validators are compensated" -> Consider "Validators are compensated a few ways"... my thought is this helps further imply that validators don't rely on fees
• "Priority is determined" -> "Priority can be determined"... just noting that it's up to the builder; not a hard rule.

5

• "the tip is already encompassed in the priority fee."... are they not the same thing? Feel like this wording may cause some confusion, but nothing critical.

[SupaMega24]

Thank you for taking the time to give valuable feedback @wackerow .

I've gone through an edited, the quiz again to reflect your suggestions as they made a lot of sense.