What distinguishes push technology from pull technology?

Push technology is distinguished by the mechanism where servers actively send data to clients without the clients needing to request it. This is in contrast to pull technology, where clients initiate the request for data from the server. In push technology, updates or information are delivered directly to users as they become available, making it well-suited for scenarios such as news feeds, email notifications, or real-time updates. This proactive approach allows clients to receive timely information without having to check for it manually, enhancing convenience and efficiency.

Other options describe characteristics that do not align with the essence of push technology. For example, the notion of clients initiating data transmission is more in line with pull technology. Additionally, while storing data before delivery might apply to certain contexts, it doesn't specifically define the push mechanism. Lastly, sending only specific data to selected clients is also a feature that can exist in other contexts, but it does not capture the fundamental difference between push and pull technologies.