DSA Studio

CRDT Checkpoint

Work fresh traces, diagnose invalid implementations, and identify model boundaries.

Get every question correct to pass this checkpoint. You can review feedback, revise your answers, and submit again.

1. G-counter replicas contain components [4,1] and [2,3]. What is the sum after componentwise-max merge?
2. An observed-remove set removes tag a for item x, while a concurrent replica adds x with fresh tag b. What survives after merge?

Select one answer.

3. Why must a state-based CRDT merge be idempotent?

Select one answer.

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