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What Fabric Gateway client API call could a client application use to update ledger state?
Suggested Answer: A
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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 .
38 comments · newest first
EL
Eleonore
11 months ago
I thought there was an Update call, but now I'm confused.
MI
Mike
11 months ago
Definitely not D, that's for sure!
RO
Royal
12 months ago
Wait, is it really B? I thought it might be C.
XO
Xochitl
12 months ago
Yeah, I agree with Merilyn!
ME
Merilyn
1 year ago
I'm pretty sure it's B - Invoke.
CH
Chanel
1 year ago
I’m leaning towards "Evaluate," but I can't recall if that’s more for querying rather than updating.
FR
Franchesca
1 year 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.
EL
Eliz
1 year ago
I remember practicing a similar question, and I think "Submit" was mentioned as a way to change the ledger.
AL
Alysa
1 year ago
I think the answer might be "Invoke," but I'm not entirely sure if that's the right term for updating ledger state.
RE
Reid
1 year 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.
ED
Edward
1 year 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.
FR
France
1 year 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.
DA
Dahlia
1 year 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.
MA
Maryrose
1 year ago
Wait, is there an option for 'All of the above'? I'm just kidding, B) Invoke is the clear winner.
TA
Tamar
1 year ago
D) Submit is used to commit a transaction to the ledger.
GI
Gilberto
1 year ago
B) Invoke is the correct option for updating ledger state.
MA
Marica
1 year ago
A) Evaluate is used to query the ledger state.
ED
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.
LI
Lisha
1 year ago
B) Invoke is definitely the way to go here.
CA
Carmen
1 year ago
A) Evaluate? Really? That's for querying the ledger, not modifying it.
PE
Pedro
1 year ago
B) Invoke
TO
Tomoko
2 years 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.
ST
Staci
1 year ago
I believe B) Invoke is the best choice for updating ledger state.
JO
Joesph
1 year ago
I agree, B) Invoke is commonly used for updating ledger state.
SI
Silvana
1 year ago
I think B) Invoke is the correct option for updating ledger state.
NY
Nydia
2 years 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.
BU
Buffy
1 year ago
So, we should go with B) Invoke for updating ledger state.
JO
Joesph
1 year ago
I agree, C) Update is more for modifying existing data.
JU
Justa
1 year ago
Yes, B) Invoke is used for invoking contract functions.
KR
Krystal
1 year ago
I think B) Invoke is the correct option for updating ledger state.
ST
Steffanie
2 years 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.
GL
Glory
2 years ago
I agree with Vicki, because the Invoke API call is used to update ledger state.
VI
Vicki
2 years ago
I think the answer is B) Invoke.
AR
Arminda
2 years 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.
VA
Vanda
1 year ago
Correct, the client application can use B) Invoke to update ledger state.
PA
Paulina
1 year ago
I think B) Invoke makes sense for updating ledger state using the client API.
AL
Alva
1 year ago
Yes, the Fabric Gateway client API call to update ledger state is through B) Invoke.
PH
Phillip
2 years ago
I agree, B) Invoke is the correct option to update ledger state.