Blockchain Exam CBDE Topic 2 Question 72 Discussion

Actual exam question for Blockchain's CBDE exam

Question #: 72
Topic #: 2

[All CBDE Questions]

When you do external calls to other smart contracts:

Ayou should follow the checks-effects-interactions pattern and avoid state changes after the call.

Byou should follow the effects-checks-interactions pattern and avoid state changes before the call.

Cyou should follow the checks-effects-interactions pattern, which is only necessary when you do calls to contracts where a direct contract call is not possible.

Show Suggested Answer

Suggested Answer: B

by Dominque at Jul 04, 2023, 02:02 AM

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Percy

6 hours ago

Option A is definitely the way to go. Following the checks-effects-interactions pattern is crucial to avoid reentrancy vulnerabilities.

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Polly

1 days ago

I think when doing external calls, we should follow the checks-effects-interactions pattern.

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Veta

4 days ago

I think both options have their merits, but I prefer following the checks-effects-interactions pattern, especially when direct contract calls are not possible.

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Dick

6 days ago

I disagree, I believe we should follow the effects-checks-interactions pattern and avoid state changes before the call.

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Tayna

9 days ago

I think when doing external calls, we should follow the checks-effects-interactions pattern and avoid state changes after the call.

upvoted 0 times

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