Question: What is the primary purpose of capability exchange in the Transparent end-to-end Packet-switched Streaming Service (PSS)?
Option 1: To ensure backward compatibility with non-PSS devices
Option 2: To enhance security protocols for content transmission
Option 3: To enable PSS servers to provide device-tailored content and facilitate smooth transitions between different PSS releases
Option 4: To manage Quality of Service (QoS) for real-time streaming
Explanation: Capability exchange is crucial in PSS for two main reasons: firstly, it allows servers to adapt content to the specific capabilities of a wide range of devices, ensuring optimal playback. Secondly, it facilitates seamless transitions between different releases of PSS, which is vital for maintaining service continuity and user experience as the technology evolves.