Blockchain Exam CBDE Topic 4 Question 85 Discussion

Actual exam question for Blockchain's CBDE exam

Question #: 85
Topic #: 4

[All CBDE Questions]

To generate a random number:

Ait's good to use the block timestamp, as this is always different.

Bit's good to use the block hash as this is clearly always very different.

Cit's good to use the RANDAO smart contract.

Dit's not possible to have a random number in a deterministic environment such as the Ethereum blockchain.

Show Suggested Answer

Suggested Answer: C

by Ammie at Apr 09, 2024, 06:18 AM

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Caren

6 months ago

I beliCaren it's not possible to have true randomness in a deterministic environment like the Ethereum blockchain.

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Melynda

6 months ago

I think using the RANDAO smart contract is the most reliable option.

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Domingo

6 months ago

I prefer using the block hash for random number generation.

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Irving

6 months ago

I agree with Amber, the block timestamp is always changing.

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Amber

6 months ago

I think it's good to use the block timestamp for randomness.

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Teddy

6 months ago

I see your point, but using the block timestamp could be susceptible to manipulation.

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Suzi

7 months ago

I don't think we can have true randomness in a deterministic environment like the Ethereum blockchain.

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Carmela

7 months ago

Actually, I prefer using the RANDAO smart contract for generating random numbers.

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Alexia

7 months ago

I disagree, I believe it's better to use the block hash as it's clearly very different.

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Mitsue

7 months ago

I think it's good to use the block timestamp because it's always different.

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Hah, good point, Justine! I think that's the problem with a lot of these options - they might seem random on the surface, but there could be ways to game the system. I'm not sure there's a perfect solution here.

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Justine

8 months ago

Personally, I'm leaning towards option B. The block hash is always different, so it seems like a good source of randomness to me. *chuckles* Although I guess if someone can predict the block hash, it wouldn't be so random, would it?

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Tommy

8 months ago

Yeah, Herman's got a point. I think the RANDAO contract is a pretty good solution. It's been used quite a bit in the Ethereum ecosystem, so it must be doing something right.

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Melissa

6 months ago

I think using the block hash is even better, as it's clearly always very different.

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Loreta

6 months ago

But isn't using the block timestamp also a good option? It's always different.

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Alberto

7 months ago

I agree, using the RANDAO smart contract seems like a reliable way to generate random numbers.

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Herman

8 months ago

I'm not so sure about that, Sherill. What about option C, the RANDAO smart contract? I've heard that can be a pretty reliable way to generate random numbers on the blockchain.

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Sherill

8 months ago

I agree with you, Gary. I'm not sure there's an easy answer here. But I think option D might be the most accurate - it's probably not possible to have a completely random number on the Ethereum blockchain.

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Gary

8 months ago

Hmm, this is an interesting question. I'm not sure how I feel about it, to be honest. Generating a truly random number in a deterministic environment like the Ethereum blockchain does seem like a bit of a challenge.

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Blockchain Exam CBDE Topic 4 Question 85 Discussion

Contribute your Thoughts:

Caren

Melynda

Domingo

Irving

Amber

Teddy

Suzi

Carmela

Alexia

Mitsue

Luisa

Justine

Tommy

Melissa

Loreta

Alberto

Herman

Sherill

Gary