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Exin BLOCKCHAINF Exam - Topic 3 Question 12 Discussion

Which item(s) make up a block header?
D) The hash of the previous block
A) The hash of the Merkle root and the header of the previous block
B) The hash of every transaction in a specific block and the next block
C) The time stamp of the block and the genesis block hash

Exin BLOCKCHAINF Exam - Topic 3 Question 12 Discussion

Actual exam question for Exin's BLOCKCHAINF exam
Question #: 12
Topic #: 3
[All BLOCKCHAINF Questions]

Which item(s) make up a block header?

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Suggested Answer: D

by Justine at May 09, 2022, 09:24 AM

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Candida
7 months ago
A and D are correct, no doubt about it!
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Soledad
7 months ago
C? Really? I didn't know the genesis block hash was in there.
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Phuong
7 months ago
Wait, is B even a thing? That sounds off.
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Bernardo
8 months ago
I think D is also important, but A is the main one.
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Alisha
8 months ago
Definitely A! Merkle root and previous block hash are key.
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Joseph
8 months ago
I’m a bit confused; does the block header really include the timestamp? I thought that was just for the block itself.
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Carey
8 months ago
I feel like I've seen a question similar to this before, and it was about the hash of the previous block being essential.
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Brigette
8 months ago
I remember studying that the Merkle root is important for block headers, so maybe A is correct?
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Katina
8 months ago
I think the block header includes the hash of the previous block, but I'm not sure if that's the only thing.
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Karan
8 months ago
Hmm, this is a tricky one. I'm thinking the fastest way would be to failback to the blue stack, since that's already known to be working. Rebooting the servers could take a while, and restoring from backups would be even slower.
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Lezlie
8 months ago
I'm a little confused by this question. I know Surface Automation has different navigation actions, but I'm not sure which one is specifically used to press a button that's been identified as a Region. I'll have to re-read the question and options more closely.
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Beckie
8 months ago
This is a tricky one. I want to make sure I don't overthink it and miss something obvious. I'll read through the choices carefully before deciding.
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Lyda
8 months ago
I'm not sure about this one. The fractions and overlapping sets are throwing me off. I'll need to draw a Venn diagram to visualize it better.
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