Blockchain Architecture and Its Core Components BBLC Practice Questions (Page 11)

Questions 51–52

1. 51application · medium

   A company is evaluating whether to use a blockchain or a traditional centralized database for a supply chain tracking system. They need multiple organizations to update and verify the same data without trusting a central authority. Which characteristic of blockchain makes it more suitable than a centralized database?

   • AThe database supports ACID transactions for atomic updates.
   • BThe database is stored in the cloud and accessible via APIs.
   • CThe database uses encryption to protect data at rest and in transit.
   • DThe ledger is replicated and synchronized across multiple independent nodes, with consensus ensuring agreement.
   Reveal Solution Discussion Select an answer first
2. 52application · medium

   A consortium of 15 banks plans to deploy a permissioned blockchain for interbank settlements. They need finality within seconds, high transaction throughput, and the ability to identify which node approved a transaction for audit purposes. Which consensus approach best meets these requirements?

   • AProof of Stake (PoS) with a public network
   • BPractical Byzantine Fault Tolerance (PBFT) among the 15 banks
   • CDelegated Proof of Stake (DPoS) with 21 elected delegates
   • DProof of Work (PoW) with a public network
   Reveal Solution Discussion Select an answer first