A distributed application involving Mobile hosts consists of a set of cooperating processes in which some of them run on MHs. An MH is connected to the wired network through
mobile support stations
(MSS). Distributed systems are not fault-tolerant and the vast computing potential of these systems is often hampered by their susceptibility to failures. Many techniques have been developed to add reliability and high availability to distributed systems. These techniques have different tradeoffs and focus. The paper surveys a literature survey on the modern check pointing techniques in distributed and mobile environments. We have classified the various check pointing schemes and then discussed the related works in that category. The paper also presents a comparative study of the protocols/schemes with relative advantages and disadvantages and finally the features which make the checkpointing techniques to be suitable in a particular application scenario are also discussed.
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