Blockchain CBSA Exam - Topic 5 Question 39 Discussion

Actual exam question for Blockchain's CBSA exam

Question #: 39
Topic #: 5

You have flown to NYC to have a discussion with a technical executive of a too big to fail bank. You are having a discussion about blockchain algos and the customer is asking what are some disadvantages of using a POW algo?

ACentralization of blockchain control

BOnly use case for computational power is blockchain

CLarge expenditures for computational power

DNot profitable for miners

E51% attack mitigation

Show Suggested Answer

Suggested Answer: A

by Rhea at Dec 06, 2022, 07:00 AM

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Emmanuel

6 months ago

Only use case for computational power? That's a stretch!

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Cristina

6 months ago

Centralization is a big issue, for sure.

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Kiley

6 months ago

Wait, is it really not profitable for miners anymore?

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Halina

6 months ago

Totally agree, the expenses are insane!

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Ona

6 months ago

POW requires huge energy costs.

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Thurman

7 months ago

I feel like the computational power aspect is a big deal, but I'm not confident if it's just about blockchain use cases, so option B seems tricky.

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Teri

7 months ago

I practiced a question similar to this, and I recall that miners can face profitability issues, so option D could be relevant too.

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Willard

7 months ago

I'm not entirely sure, but I think centralization could be a concern with POW, maybe option A?

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Lisha

7 months ago

I remember discussing how POW can lead to high energy costs, so I think option C might be a strong choice.

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Kami

7 months ago

This looks like a pretty straightforward question. I think the key is to focus on the requirements - we need to use the latest version of SQL Server and support the SQL Server Agent service, while minimizing administrative effort. Based on that, I'd say Azure SQL Managed Instance is the way to go.

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Loren

7 months ago

Hmm, I'm a little unsure about the distinction between the baseline and target architectures here. I'll need to re-read the TOGAF chapter to make sure I understand which diagrams and matrices are appropriate for each.

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Venita

7 months ago

I remember we discussed volume consolidation in class, and it seems like that might be the right answer here.

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Paul

7 months ago

I think there was a practice question that mentioned using Web3.js. But I'm unsure if it's really closed source or not.

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Tamie

7 months ago

I'm really uncertain about the differences in enrollment criteria. Wasn't one of them for nursing home certifiable patients only?

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Gary

11 months ago

The 51% attack mitigation is an advantage, not a disadvantage! But I agree that the huge energy costs of POW are a major downside. Gotta love those high electricity bills.

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An

9 months ago

I agree, the high energy costs of POW can really add up. It's definitely a major disadvantage.

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Dana

10 months ago

D) Not profitable for miners

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Nadine

10 months ago

C) Large expenditures for computational power

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Ellsworth

10 months ago

A) Centralization of blockchain control

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Margarita

10 months ago

Yes, the 51% attack mitigation is definitely an advantage, but the high energy costs are a major downside.

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France

10 months ago

E) 51% attack mitigation

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Paola

10 months ago

C) Large expenditures for computational power

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Carla

11 months ago

A) Centralization of blockchain control

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Kimberlie

11 months ago

I'm going to go with C. Spending a ton of money on computational power doesn't sound like a very efficient or sustainable model for a blockchain network. Maybe they should look into Proof-of-Stake instead?

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Ashton

10 months ago

E) 51% attack mitigation

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Sanda

10 months ago

C) Large expenditures for computational power

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Clare

11 months ago

A) Centralization of blockchain control

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Kate

12 months ago

Haha, can you imagine how much it must cost to run a POW blockchain? The electric bill alone would be enough to bankrupt a small country!

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Edelmira

11 months ago

E) 51% attack mitigation

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Leonor

11 months ago

C) Large expenditures for computational power

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Carmelina

11 months ago

A) Centralization of blockchain control

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Essie

1 year ago

Hmm, I think B and C are both good options. The fact that the only use case for the computational power is the blockchain itself is a major disadvantage of the POW algorithm.

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Selma

10 months ago

Hmm, I think B and C are both good options. The fact that the only use case for the computational power is the blockchain itself is a major disadvantage of the POW algorithm.

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Karan

10 months ago

C) Large expenditures for computational power

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Fanny

10 months ago

B) Only use case for computational power is blockchain

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Albert

11 months ago

A) Centralization of blockchain control

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Chauncey

11 months ago

I agree, C is definitely a major disadvantage. The amount of computational power required can be a barrier for many miners.

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Melita

11 months ago

C) Large expenditures for computational power

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Jospeh

11 months ago

E) 51% attack mitigation

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Jacki

12 months ago

A) Centralization of blockchain control

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Paris

1 year ago

The correct answer is C. Large expenditures for computational power. Proof-of-Work (POW) algorithms require a significant amount of computational power, which can be quite costly for miners and the overall network.

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