Question: 1. What is a volatile system? List the main typesof changes that occur in a ubiquitous system 2. Discuss whether it is possible to improve

1. What is a volatile system? List the main typesof changes that occur in a ubiquitous system

2. Discuss whether it is possible to improve upon the pull model of service discovery by multicasting (or broadcasting) and caching replies to queries.

3. What is data-oriented programming and how does it differ from object-oriented programming?

4. Compare and contrast the persistence requirements associated with event systems and tuple spaces in the infrastructure of smart spaces.

5. Describe the use of IP multicast and group namesin the Jini discovery service which allows clients and servers to locate look up servers.

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