Discuss Blockchain CBSA Exam Topic 1 Question 99

Which of these demonstrates the correct order of the lifecycle of a transaction on Ethereum blockchain?

A1. User uses Dapp/web3 to start transaction2. User signs the transaction with their private key3. Transaction validated on locally running node4. Transaction broadcast to entire network5. Miners choose to accept or pass on the transaction6. Miner takes each accepted transaction and writes it to the current block

B1. User uses Dapp/web3 to start transaction2. Transaction broadcast to entire network3. If accepted by the network, user signs transaction with private key4. Miners choose to accept or pass on the transaction5. Miner takes each accepted transaction and writes it to the current block

CBoth of these ordering sequences can occur

DNone of the above

Suggested Answer: A

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26 comments · newest first

Roosevelt 2 months ago

I'm not sure. D sounds safe, but I lean towards A.

Emerson 2 months ago

C could be true. Both sequences seem possible.

Lauran 2 months ago

I prefer B. Broadcasting before signing feels wrong.

Son 2 months ago

I think A is correct. It makes sense to sign first.

Pamella 2 months ago

D is not an option. Both A and B have flaws.

Lashanda 3 months ago

C could be possible. Both orders might work.

Glennis 3 months ago

I prefer B. Broadcasting before signing? Seems off.

Carolann 3 months ago

I think A is the right order. Makes sense to sign first.

Lorrie 3 months ago

D is not right. One of them has to be correct.

Huey 3 months ago

C could be true too. Different scenarios happen.

Shayne 3 months ago

I prefer B. Broadcasting first seems more efficient.

Van 4 months ago

I think A is correct. It makes sense to sign before broadcasting.

Rikki 4 months ago

Not sure about this, seems like a trick question.

Elizabeth 4 months ago

Totally agree with A, that's how it works!

Jovita 5 months ago

Wait, how can you sign a transaction after broadcasting it?

Vanda 6 months ago

I think C makes sense too, both can happen.

Valene 6 months ago

A is definitely the right order!

Barney 6 months ago

Not sure about A, seems a bit off to me.

Joaquin 6 months ago

Totally agree with A, that's how it works!

Gilberto 6 months ago

Wait, how can you sign a transaction after broadcasting it?

Rossana 7 months ago

I think C makes sense too, both can happen.

Bernadine 7 months ago

A is definitely the right order!

Edison 7 months ago

I’m confused about the order; I thought the transaction was broadcasted first, but I guess it’s more about the signing process. Maybe option C is possible?

Eve 7 months ago

I practiced a similar question, and I think both A and B have some valid points, but I lean towards A being correct.

Shaniqua 7 months ago

I'm not entirely sure, but I feel like the transaction needs to be validated by the node before it's sent out to the network.

Salina 7 months ago

I remember that the user usually signs the transaction before it's broadcasted to the network, so I think option A makes more sense.

Blockchain CBSA Exam - Topic 1 Question 99 Discussion