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Blockchain CBDE Exam - Topic 2 Question 64 Discussion

All low-level functions on the address, so address.send(), address.call.valueQQ, address.callcode and address.delegatecall:
C) returning Booleans to indicate an error during execution.
A) are interrupting execution on error, because they throw an exception.
B) continuing execution on error silently, which is the reason why they are so dangerous.
D) .send() throws an exception, while the other functions are returning Booleans during execution to indicate an error.

Blockchain CBDE Exam - Topic 2 Question 64 Discussion

Actual exam question for Blockchain's CBDE exam
Question #: 64
Topic #: 2
[All CBDE Questions]

All low-level functions on the address, so address.send(), address.call.valueQQ, address.callcode and address.delegatecall:

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Suggested Answer: C

by Frederica at Dec 27, 2022, 02:49 AM

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Nathalie
10 months ago
I thought .send() also returned a Boolean, interesting!
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Jutta
10 months ago
Wait, are you sure about D? Sounds off.
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Leanna
10 months ago
C is partially true, but not for all functions.
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Robt
11 months ago
Totally agree, B is misleading.
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Chantell
11 months ago
A is correct, they throw exceptions.
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Scarlet
11 months ago
I’m pretty certain that .send() behaves differently from the others, but I can't recall the specifics about call.value or callcode.
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Tula
11 months ago
I have a vague memory that some of these functions continue execution silently, which makes them risky.
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Gaston
11 months ago
I practiced a question like this, and I feel like the low-level functions return Booleans to indicate errors, but I could be wrong.
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Muriel
11 months ago
I think I remember that .send() throws an exception, but I'm not sure about the others.
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Aleta
11 months ago
Hmm, I'm a bit unsure about this one. I know MongoDB is a NoSQL database that uses a document-oriented data model, but I can't remember the exact format they use to store the documents internally. I'll have to think this through carefully.
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Olene
11 months ago
Hmm, I'm a bit unsure about this one. I'll need to think through the differences between the planning options to determine the best fit.
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Pearlene
11 months ago
This is a good question to test our understanding of insurance rating methods. I'll carefully read through each option and think about which one best matches the description provided.
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Valentin
11 months ago
I think it's essential to check the existing version before upgrading, so maybe option E could be one of the answers?
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