Question: In a Transparent end-to-end Packet-switched Streaming Service (PSS), what format should clients use for requesting the retransmission of packets, as per 3GPP specifications?
Option 1: Standard Profile with Feedback (AVPF) - Basic Format
Option 2: Extended Profile for CP-based Feedback (/AVPF)
Option 3: Simple Profile with Feedback Reduction (SP-FR)
Option 4: Full Intra Request (FIR) Packet Format
Explanation: The correct answer is Option 2 because, according to the 3GPP specifications for PSS, clients are required to utilize the "Extended Profile for CP-based Feedback (/AVPF)" format specifically for requesting packet retransmissions. This ensures compatibility and efficiency in streaming services by adhering to defined protocols for feedback and retransmission requests.