Linux Foundation HFCP Exam - Topic 2 Question 1 Discussion

Actual exam question for Linux Foundation's HFCP exam

Question #: 1
Topic #: 2

[All HFCP Questions]

What is a range query with a start and end key?

AA query that searches for all keys that are in the range defined by the start and end keys.

BA query that searches for a specific value in a composite key and all values after it.

CA query that searches for ledger entries that have values matching the range.

DA query that searches for all the key field in the value.

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 Germaine at Apr 21, 2024, 11:48 AM

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Hortencia

4 months ago

I thought range queries were more complex than that!

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Serina

4 months ago

I think option C is misleading, it's not just about ledger entries.

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Raylene

4 months ago

Wait, isn't that just a fancy way of saying "between"?

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Loise

4 months ago

Totally agree, option A is spot on!

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Glendora

5 months ago

It's basically looking for keys between two points.

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Cristal

5 months ago

I’m a bit confused; I thought a range query was more about specific entries, like in option C, but now I’m not so sure.

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Shaun

5 months ago

I practiced a similar question where we had to identify queries based on key ranges. I feel like option A fits best with what I learned.

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Tamra

5 months ago

I'm not entirely sure, but I remember something about composite keys and searching for values after a certain point. That makes me think of option B.

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Belen

5 months ago

I think a range query is about finding all keys between two specified points, so I might go with option A.

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Otis

5 months ago

This is a good test of my understanding of database queries. I'll eliminate the options that don't mention a range, and then choose the one that best fits the description.

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Jennifer

5 months ago

I'm a little confused by the wording of the question. Is it asking about the definition of a range query, or how to actually perform one? I'll have to read it over again.

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Aliza

5 months ago

Okay, the key is to focus on the "start and end key" part of the question. That's the defining characteristic of a range query, so I'll go with option A.

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Rosendo

5 months ago

Hmm, I'm a bit unsure about the difference between a range query and a composite key query. Let me think this through carefully.

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Jerry

5 months ago

This looks like a straightforward question about range queries. I'm pretty confident I can answer this correctly.

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Reita

6 months ago

Hmm, this seems like a tricky one. I'll need to think carefully about the different network options and which one would be most appropriate for a File Analytics deployment.

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Ciara

6 months ago

I'm a little confused by the wording of the question. Does "covered by the term 'coupling'" mean we're looking for the definition of coupling, or just examples of it? I want to make sure I understand what they're asking for.

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Justine

6 months ago

Ah, I see. Translating the normalization to SQL for BigQuery seems like the most straightforward approach to minimize computation time and manual intervention. I'm leaning towards that as the best solution.

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