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Linux Foundation Exam HFCP Topic 4 Question 18 Discussion

Actual exam question for Linux Foundation's HFCP exam

Question #: 18
Topic #: 4

[All HFCP Questions]

What happens if the user submits a transaction with no matching function?

AThe peer will have rejected the transaction.

BNothing, the transaction is ignored.

CThe first transaction function is called.

DThe unknownTransaction function is called.

Show Suggested Answer

Suggested Answer: D

In Hyperledger Fabric, if a user submits a transaction with no matching function specified in the smart contract, the unknownTransaction function is invoked by default. This function serves as a catch-all method that can be used to handle cases where the transaction type is not recognized, providing a mechanism to manage or log these occurrences effectively .

by Alva at Sep 17, 2024, 02:24 AM

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Gail

7 months ago

D is the way to go. Although, I'm curious if the 'unknownTransaction' function has easter eggs. Maybe it orders pizza automatically?

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Dyan

6 months ago

I wonder what other surprises the unknownTransaction function has.

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Kathrine

6 months ago

That would be cool if it ordered pizza automatically!

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Dortha

6 months ago

D is correct. The unknownTransaction function is called.

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Susana

7 months ago

I'm not sure, but I think it could also be D) The unknownTransaction function is called. It makes sense to handle unknown transactions that way.

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Kristofer

7 months ago

I agree with Deangelo, because if there's no matching function, the transaction should be rejected.

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Theron

7 months ago

I'm going with C. It's like the default case in a switch statement - gotta catch 'em all!

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Isaac

7 months ago

B is tempting, but I'd rather not have the transaction ignored. Imagine the chaos if that happened in production!

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Terina

6 months ago

D) The unknownTransaction function is called.

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Dyan

7 months ago

D) The unknownTransaction function is called.

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Lajuana

7 months ago

B) Nothing, the transaction is ignored.

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Gary

7 months ago

A) The peer will have rejected the transaction.

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Tayna

7 months ago

A) The peer will have rejected the transaction.

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Polly

8 months ago

Option D seems the most logical, but my gut says A. I really hope the 'unknownTransaction' function isn't filled with glitter bombs!

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Willodean

7 months ago

I agree, it's better to go with option A to avoid any issues.

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Elouise

7 months ago

I think option A is correct. The peer will reject the transaction.

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Deangelo

8 months ago

I think the answer is A) The peer will have rejected the transaction.

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