Correct Answer : Streaming
Explanation : Even if delivery is always over a WAN connection, CDN (Content Delivery Network) still offers enormous inefficiencies.
Correct Answer : P2P
Explanation : The XMPP PubSub extension is how Apple creates a push service for MobileMe.
Correct Answer : Push-IMAP
Explanation : Push-IMAP stands for the Push extensions for Internet Message Access Protocol.
Correct Answer : XPS
Explanation : The system uses a large reference database of Wi-Fi access points and cell tower IDs, raw position data from each location source (a signal), and the company’s proprietary algorithm to locate the device.