E1D01:What is the definition of telemetry?
Direct answer summary (2024-2028 NCVEC pool)
The official correct answer for E1D01 is One-way transmission of measurements at a distance from the measuring instrument.
The key fact is One-way transmission of measurements at a distance from the measuring instrument. Match that fact to the exact condition in the question; the other choices describe a different rule, band, component, or operating situation.