Question: In a Transparent end-to-end Packet-switched Streaming Service (PSS), what is the likely response when a client sends a PLAY request for fast content switching without an available SDP, and the server cannot select the desired media flows from the multiple options (e.g., several audio tracks) in the SDP file?
Option 1: 200 OK with automatic selection of the first available audio track.
Option 2: 202 Accepted indicating the server's inability to select desired flows without client input.
Option 3: 404 Not Found as the server cannot process the request without an SDP.
Option 4: 500 Internal Server Error due to the complexity of multiple audio tracks.
Explanation: In scenarios where a Transparent end-to-end Packet-switched Streaming Service (PSS) encounters a PLAY request for content switching without a readily available SDP, and the server is faced with multiple indistinguishable options (like several audio tracks), it logically cannot automatically proceed. A '202 Accepted' response signifies that the request has been accepted for processing but not yet fully acted upon, which aligns with the server's state of needing further input to make a selection, thus prompting additional communication or clarification from the client to complete the request.