I feel like we practiced a question similar to this, and I think the flexibility allows for better customization, so I would lean towards option B as well.
I vaguely recall something about modifying focus areas, but I don't think option C is correct since it mentions not being able to add new ones, which seems limiting.
For single-segment protection, I'm pretty sure the PQ node needs to be both LDP and SR-capable. That seems like the most straightforward condition to me.
Okay, I've got this. The question is asking for a symmetric key block cipher, so that rules out PGP which is an asymmetric encryption algorithm. I'm pretty sure DES and AES are the two most common symmetric key block ciphers, so I'll go with D. AES.
I'm a bit confused on this one. I'm not sure which thresholds would impact both real-time and historical data. I'll need to review my notes to see if I can figure this out.
Okay, I've got this. When the require check fails, the transaction is reverted, so any gas that was used up to that point is returned. The answer has to be B.
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