Discuss Blockchain CBDE Exam Topic 2 Question 64

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

Aare interrupting execution on error, because they throw an exception.

Bcontinuing execution on error silently, which is the reason why they are so dangerous.

Creturning Booleans to indicate an error during execution.

D.send() throws an exception, while the other functions are returning Booleans during execution to indicate an error.

Suggested Answer: C

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13 comments · newest first

Nathalie 12 months ago

I thought .send() also returned a Boolean, interesting!

Jutta 12 months ago

Wait, are you sure about D? Sounds off.

Leanna 12 months ago

C is partially true, but not for all functions.

Robt 1 year ago

Totally agree, B is misleading.

Chantell 1 year ago

A is correct, they throw exceptions.

Scarlet 1 year ago

I’m pretty certain that .send() behaves differently from the others, but I can't recall the specifics about call.value or callcode.

Tula 1 year ago

I have a vague memory that some of these functions continue execution silently, which makes them risky.

Gaston 1 year 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.

Muriel 1 year ago

I think I remember that .send() throws an exception, but I'm not sure about the others.

Aleta 1 year 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.

Olene 1 year 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.

Pearlene 1 year 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.

Valentin 1 year ago

I think it's essential to check the existing version before upgrading, so maybe option E could be one of the answers?

Blockchain CBDE Exam - Topic 2 Question 64 Discussion