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The wireless sensor network consists of hundreds or thousands of sensors. The sensors are shared by the multiple applications like sensing the temperature, pressure etc. Function of sensor is to sense the information and transfer that information to the neighbor of that node. In wireless network every node is connected to each other. The data reach to the sink using the variance roots. The all data has same precedence the data is not divided in according to importance. Some data reach to the sink by smallest path and some use the longest path and redundant communication paths also exist to increase system reliability. The drawback is High preference data may be use the longest path for reach the destination and may lost by Low preference data.
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