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Blockchain lets connected computers maintain a single secure:

ALedger
BLeaflet
CLecture
DLending
Answer & Solution
Correct answer: A. Ledger
1. A blockchain holds a shared record of transactions. 2. That record is named after the accounting term. 3. Blockchain allows a group of connected computers to maintain a single secure ledger. 4. So the answer is a ledger. _Source: syllabus Computer Science, Ch 3 'Emerging Trends'_
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