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5G Fundamentals
Try these first, even if you're not sure. Guessing primes your brain.
A production trace shows the subscriber identity sent with encryption flag set to null. First reaction?
A phone fails to reconnect. Its temporary ID points to a core instance that no longer exists. What happened?
In a mixed 4G/5G trace, the tracking-area field looks shorter in one message. Why?
Answer all 3to continue — it's OK to be wrong.