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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?

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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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Anjelica
1 month 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
1 month 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
2 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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