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Acams CCAS Exam - Topic 2 Question 14 Discussion

Which blockchain feature ensures that once a block is added, it cannot be altered without network consensus?
B) Hash immutability
A) Consensus algorithm
C) Tokenization
D) Peer-to-peer networking

Acams CCAS Exam - Topic 2 Question 14 Discussion

Actual exam question for Acams's CCAS exam
Question #: 14
Topic #: 2
[All CCAS Questions]

Which blockchain feature ensures that once a block is added, it cannot be altered without network consensus?

Show Suggested Answer Hide Answer
Suggested Answer: B

Hash immutability means that altering any transaction would require changing all subsequent blocks and achieving majority consensus. This security property underpins blockchain integrity and forensic traceability, crucial in AML investigations.


by Noelia at May 06, 2026, 08:06 PM

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Aleshia
3 days ago
True, but B ensures data integrity. Both are important!
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Felix
8 days ago
A is right. Without consensus, nothing is secure.
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Adelle
14 days ago
I agree, but B) Hash immutability is also crucial. Can't change data!
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Karol
19 days ago
I think it's A) Consensus algorithm. It makes sense for security.
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Dulce
24 days ago
B is key too! Once hashed, it's locked in.
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Sage
29 days ago
I lean towards A. Consensus keeps everything in check.
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Felton
1 month ago
True, but B is about the data itself. Both are important!
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Marti
1 month ago
I feel like A is the best choice. Network needs to agree first.
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Ramonita
1 month ago
I agree, but B) Hash immutability is also crucial. Can't change data without it.
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Shaunna
2 months ago
I think it's A) Consensus algorithm. It makes sense for security.
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Carlene
2 months ago
Tokenization isn't even related here, lol.
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Wynell
2 months ago
Wait, are we sure about that?
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Jerrod
2 months ago
Totally agree with A!
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Jacquline
2 months ago
I thought it was B) Hash immutability?
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Avery
3 months ago
It's definitely A) Consensus algorithm!
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Zachary
3 months ago
I’m a bit confused about the options, but I don’t think tokenization or peer-to-peer networking are the right answers.
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Anjelica
4 months ago
I feel like we've seen similar questions before, and I think the consensus algorithm is crucial for changes, so I'm going with A.
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Ardella
4 months ago
I remember discussing hash immutability in class, so I'm leaning towards B) Hash immutability, but it could be a trick question.
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Bernardine
5 months ago
I think the answer might be A) Consensus algorithm, but I'm not entirely sure if that's the only feature involved.
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