Question: In a 3GPP Transparent end-to-end Packet-switched Streaming Service (PSS), what is a prerequisite for a client to successfully perform fast content switching with reduced media components, as indicated by a new SDP?
Option 1: The client must establish a new dedicated bearer for each removed media component.
Option 2: The server must push an updated SDP to the client upon detecting a change in available media components.
Option 3: The client and server must renegotiate Quality of Service (QoS) parameters before the switch.
Option 4: The client must have previously retrieved the new SDP and probed the server's features.
Explanation: For fast content switching with reduced media components to be successful, as indicated by a new Session Description Protocol (SDP), the client needs to be aware of the server's capabilities and the updated media components in advance. This is only possible if the client has already retrieved the new SDP and understood the server's features through prior interaction, enabling seamless adaptation to the changes without additional overhead or renegotiation.