Discussion
Assertion (A): A Service is needed even though pods have addresses of their own.
Reason (R): Pod addresses change whenever pods are replaced, while a Service address is stable.
Answer: C
Correct answer: Both A and R are true, and R is the correct explanation of A
Both are true and the reason gives the necessity. Pods are ephemeral: rescheduling, scaling and rolling updates all replace them, and each replacement gets a new address. A Service provides a stable name and virtual address in front of whichever pods currently match its selector, so callers need not track the churn behind it.
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