Assess learners' ability to analyze and compare Paxos, Raft, and PBFT in geo-distributed deployments by evaluating performance (latency, throughput), consistency guarantees, and fault-tolerance trade-offs (crash vs Byzantine, quorum size, leader election) under network partitions and variable network latencies; tasks include interpreting empirical results, recommending protocol choices for given SLAs and threat models, and explaining how optimizations (leader placement, batching, view-change mechanisms) affect correctness, availability, and performance.