Explanation: Over- the- air provisioning is a mechanism to deploy MIDlet suites over a network. It is a method of distributing MIDlet suites. MIDlet suite providers install their MIDlet suites on Web servers and provide a hypertext link for downloading. A user can use this link to download the MIDlet suite either through the Internet microbrowser or through WAP on his device. Over-the-air provisioning is required for end-to-end encryption or other security purposes in order to deliver copyrighted software to a mobile device. For example, use of shared secrets to initiate or rebuild trust. Answer: D and C are incorrect. The use of device properties for unique identification and the use of concealment to avoid tampering attacks are the security challenges in digital rights management (DRM). Answer: B is incorrect. The use of software and hardware to meet the deployment goals is a distracter.