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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:

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Suggested Answer: B

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

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Martha
14 days ago
I'm just going to write 'All of the above' and hope the grader is in a good mood. Navigating these Solidity patterns is like trying to solve a Rubik's Cube blindfolded.
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Tasia
24 days ago
Wait, so we have to do a dance before, during, and after the external call? This exam is turning into the Hokey Pokey!
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Roslyn
1 months ago
I think Option C is the right answer. The checks-effects-interactions pattern is only necessary when you can't directly call the other contract. Otherwise, it's overkill.
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Claudia
15 days ago
A) you should follow the checks-effects-interactions pattern and avoid state changes after the call.
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Clorinda
1 months ago
I'm not sure about that 'effects-checks-interactions' thing. Isn't it better to just avoid state changes altogether when making external calls?
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Camellia
8 days ago
A) you should follow the checks-effects-interactions pattern and avoid state changes after the call.
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Lashawn
15 days ago
C) you 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.
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Derrick
16 days ago
B) you should follow the effects-checks-interactions pattern and avoid state changes before the call.
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Margart
1 months ago
A) you should follow the checks-effects-interactions pattern and avoid state changes after the call.
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Mitzie
1 months ago
But what about option C? It says it's necessary for calls to contracts where a direct contract call is not possible.
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Renea
2 months ago
I agree with Polly, it helps to avoid state changes after the call.
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Percy
2 months 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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Kaitlyn
9 days ago
User 2: I agree, following the checks-effects-interactions pattern is crucial to avoid reentrancy vulnerabilities.
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Devon
22 days ago
User 1: Option A is definitely the way to go.
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Polly
2 months ago
I think when doing external calls, we should follow the checks-effects-interactions pattern.
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Veta
2 months 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
2 months 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
2 months ago
I think when doing external calls, we should follow the checks-effects-interactions pattern and avoid state changes after the call.
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