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Blockchain CBSA Exam - Topic 5 Question 102 Discussion

What are two reasons that you would consider implementing a POW algo in your blockchain? (Select two.)
B) What matters is to have large computational power to solve the puzzles and form new blocks over having a financial stake. and C) PoW imposes some limits on actions in the network and therefore can thwart attacks better than other algos due to high cost
A) PoW imposes no limits on actions in the network and therefore can thwart attacks better than other algos due to high cost
D) The algo is energy efficient compared to POS and BFT
E) The algo is energy efficient compared to POS and DPOS

Blockchain CBSA Exam - Topic 5 Question 102 Discussion

Actual exam question for Blockchain's CBSA exam
Question #: 102
Topic #: 5
[All CBSA Questions]

What are two reasons that you would consider implementing a POW algo in your blockchain? (Select two.)

Show Suggested Answer Hide Answer
Suggested Answer: B, C

The main benefits are the anti-DoS attacks defense and low impact of stake on mining possibilities. Defense from DoS attacks. PoW imposes some limits on actions in the network. They need a lot of efforts to be executed. Efficient attack requires a lot of computational power and a lot of time to do the calculations. Therefore, the attack is possible but kind of useless since the costs are too high. Mining possibilities. It doesn't matter how much money you have in your wallet. What matters is to have large computational power to solve the puzzles and form new blocks. Thus, the holders of huge amounts of money are not in charge of making decisions for the entire network.


by Sharita at May 07, 2026, 04:48 PM

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Franklyn
3 days ago
Yeah, but the computational power is key for block formation!
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Maile
8 days ago
Wait, isn't PoW less energy efficient than POS?
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Chanel
13 days ago
A and B are solid reasons for sure!
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Lettie
18 days ago
I disagree, PoW is super energy-intensive.
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Aide
23 days ago
PoW is great for security, high cost deters attacks!
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Iluminada
29 days ago
I feel like option B is misleading; it’s not just about computational power, right? There’s also the financial stake aspect that plays a role in other algorithms.
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Burma
3 months ago
I practiced a similar question where we discussed the efficiency of PoW versus PoS, but I can't quite remember if it was more energy efficient.
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Hailey
3 months ago
I think option C sounds right since PoW does have some limits, but I also recall that it’s really about the cost of attacks being high.
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Harrison
3 months ago
I remember studying that PoW can deter attacks because it requires significant computational resources, but I'm not sure if it imposes limits or not.
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