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Cloud computing is a term which used to depict both a stage and kind of utilization. Cloud computing varies from customary registering ideal models as it is adaptable, can be embodied as a conceptual these elements which gives us diverse level of administrations to the customers, driven by economies of scale and the administrations are progressively configurable. Information put away in outsider stockpiling frameworks like the cloud probably won't be secure since classification and honesty of information are not ensured. In spite of the fact that distributed computing gives savvy stockpiling administrations. Subsequently, numerous associations and clients may not utilize the cloud administrations to store their information in the cloud until the point that specific security ensures are made. In this paper, an answer for the issue of safely putting away the customer's information by keeping up the privacy and trustworthiness of the information inside the cloud is produced. The proposed conventions are created which guarantee that the customer's information is put away just on confided away servers, reproduced just on confided away servers, and certification that the information proprietors and other favored clients of that information get to the information safely.

The Routing is the process of transmitting data packets from one node to another another node from source to destination The Mobile Adhoc Networks (MANETs ) doesn't have any fixed network structure or any centralized process to administer. The selection of the route is important for performance of packet transfer from source to destination. These routing protocol are classified as inter domain routing and Intra domain routing protocol. The routing protocols have been classified into Non Reactive , Reactive and Hybrid protocols. In the present paper we proposes to compare reactive routing protocols videlicet Ad hoc On Demand Distance Vector (AODV), Dynamic Source Routing (DSR) protocols, Temporarily Ordered Routing Algorithm (TORA) and Associativity Grounded Routing (ABR) protocol.The Routing in MANETs is a one of the robustly and demanding task and has entered a great quantum of mindfulness from experimenters around the globe. To overcome this problem, a colorful number of routing classes have been introduced and the number is still rising day by day fastly. It's relatively hard to decide which protocols or routing classes may do well under an quantum of different network scripts similar as network volume and network topology etc. The study and performance of the above mentioned protocol has also been tabulated in the present two tables . The protocols are based on minimum power and temporary configuration of topology. The table 1 gives comparison of the main characteristics of routing protocols and Table2. provide comparison of various reactive routing protocol.