Linux Foundation HFCP Exam - Topic 3 Question 25 Discussion

Actual exam question for Linux Foundation's HFCP exam

Question #: 25
Topic #: 3

[All HFCP Questions]

What Fabric Gateway client API call could a client application use to update ledger state?

AEvaluate

BInvoke

CUpdate

DSubmit

Show Suggested Answer

Suggested Answer: A

In Hyperledger Fabric, a range query with a start and end key is a type of query that searches for all ledger entries whose keys fall within the specified range defined by the startKey and endKey. This is used, for example, to retrieve a subset of assets from the ledger based on their key values, effectively iterating over a specified range .

by Vilma at Dec 05, 2024, 09:37 PM

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Eleonore

7 months ago

I thought there was an Update call, but now I'm confused.

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Mike

7 months ago

Definitely not D, that's for sure!

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Royal

7 months ago

Wait, is it really B? I thought it might be C.

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Xochitl

7 months ago

Yeah, I agree with Merilyn!

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Merilyn

8 months ago

I'm pretty sure it's B - Invoke.

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Chanel

8 months ago

I’m leaning towards "Evaluate," but I can't recall if that’s more for querying rather than updating.

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Franchesca

8 months ago

"Update" sounds like it could be the right choice, but I feel like it might be too straightforward for this kind of API call.

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Eliz

8 months ago

I remember practicing a similar question, and I think "Submit" was mentioned as a way to change the ledger.

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Alysa

8 months ago

I think the answer might be "Invoke," but I'm not entirely sure if that's the right term for updating ledger state.

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Reid

8 months ago

Ah, I remember discussing this in class. I believe the correct answer is B, Invoke. The Fabric Gateway client API uses the Invoke method to submit transactions and update the ledger state.

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Edward

8 months ago

Okay, let me think this through. The question is asking about the Fabric Gateway client API, so I'm guessing the answer is likely one of the standard methods provided by that API. I'm leaning towards B, Invoke, but I'll double-check my notes just to be sure.

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France

8 months ago

I'm a bit unsure on this one. Is it possible that the correct answer could be C, Update? That sounds like it might be the right API call to modify the ledger state.

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Dahlia

9 months ago

Hmm, this one seems straightforward. I think the answer is B, Invoke, since that's typically how you interact with the ledger from a client application.

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Maryrose

1 year ago

Wait, is there an option for 'All of the above'? I'm just kidding, B) Invoke is the clear winner.

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Tamar

12 months ago

D) Submit is used to commit a transaction to the ledger.

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Gilberto

1 year ago

B) Invoke is the correct option for updating ledger state.

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Marica

1 year ago

A) Evaluate is used to query the ledger state.

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Edelmira

1 year ago

A) Evaluate? Really? That's for querying the ledger, not modifying it. B) Invoke is definitely the way to go here.

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Lisha

1 year ago

B) Invoke is definitely the way to go here.

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Carmen

1 year ago

A) Evaluate? Really? That's for querying the ledger, not modifying it.

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Pedro

1 year ago

B) Invoke

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Tomoko

1 year ago

D) Submit sounds like it could be the answer, but that's usually used for submitting transactions, not directly updating the ledger. I'm going with B) Invoke.

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Staci

1 year ago

I believe B) Invoke is the best choice for updating ledger state.

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Joesph

1 year ago

I agree, B) Invoke is commonly used for updating ledger state.

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Silvana

1 year ago

I think B) Invoke is the correct option for updating ledger state.

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Nydia

1 year ago

I was considering C) Update, but I guess that's more for modifying existing data rather than invoking a contract function. B) Invoke makes more sense.

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Buffy

1 year ago

So, we should go with B) Invoke for updating ledger state.

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Joesph

1 year ago

I agree, C) Update is more for modifying existing data.

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Justa

1 year ago

Yes, B) Invoke is used for invoking contract functions.

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Krystal

1 year ago

I think B) Invoke is the correct option for updating ledger state.

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Steffanie

1 year ago

I'm not sure, but I think it could also be D) Submit, as it sounds like it could be used to submit changes to the ledger.

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Glory

1 year ago

I agree with Vicki, because the Invoke API call is used to update ledger state.

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Vicki

1 year ago

I think the answer is B) Invoke.

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Arminda

1 year ago

Hmm, I think B) Invoke is the correct answer here. The Fabric Gateway client API allows you to invoke smart contract functions to update the ledger state.

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