Your question is TCP vs UDP. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
What's the difference between TCP and UDP?
Explain the differences in connection setup, reliability, ordering, flow control, congestion control, latency, and common use cases. Then apply the comparison to a practical security and infrastructure decision: choose an appropriate transport for a latency-sensitive telemetry stream and a reliable software update channel, and identify the security controls required for each.