Question: In a Transparent end-to-end Packet-switched Streaming Service (PSS), how is the unit of the "AverageCodecBitrate" metric, as stored in the AverageCodecBitrate vector and reported by the PSS client, expressed?
Option 1: Bits per second (bps)
Option 2: Kilobytes per second (KB/s)
Option 3: Kilobits per second (kbit/s), allowing for fractional values
Option 4: Megabytes per second (MB/s)
Explanation: The correct answer is Option 3 because, according to the specifications, the unit of the "AverageCodecBitrate" metric is indeed expressed in kilobits per second (kbit/s), and it is further clarified that this value can be a fractional number, providing more precision in bitrate measurement. This level of detail is crucial for accurate streaming service quality assessment.