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Consistency Patterns — Series 2
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Two versions have vector clocks [2,1] and [1,2]. What follows from comparing their components?
AThe second is later because its last component is larger.
BThey are identical because both component sums equal three.
CThey are concurrent: neither clock dominates.
DThe first is later because its first component is larger.
Replica clocks differ by 30 seconds. Concurrent edits use wall-clock last-write-wins resolution. What can happen?
AClock skew changes latency but cannot influence conflict resolution.
BThe largest timestamp always identifies the last real-world action.
CBoth values are automatically preserved for manual merging.
DAn earlier real-time edit wins and another value is discarded.
A fixed five-voter Raft cluster splits into groups of three and two. Which side can elect a leader and commit new log entries under ordinary majority rules?
ABoth sides, because each has a local majority of its own group.
BOnly the two-node side because smaller groups have lower latency.
CNeither side until every one of the five voters reconnects.
DThe three-node side, assuming an eligible candidate and communication within it.
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