From a data storage point of view ,one may think of a sensor network as a distributed database that

Related MCQs

• The challenges in sensor network databases A: limited storage on nodes and high communication costs imply that older data has to be discarded B: sensor tasking interacts in numerous ways with the sensor database system
• Once a signal source is inside the sensing range of a sensor, further increasing the sensor density ___________the average distance from a sensor to the signal source, hence improving the SNR
• Wireless Sensor Networks are networks that consist of sensors that are A: distributed in an ad hoc manner. B: These sensors work with each other to sense some physical phenomenon and then the information gathered is processed to get relevant results. C: Wireless sensor networks consist of protocols and algorithms with self-organizing capabilities.
• In__________ database systems, data storage may be allocated among several geographical separated locations, connected by a communications network
• In a typical sensor network, each sensor node operates unethered and has a microprocessor and a small amount of memory for signal processing and task scheduling
• Each sensor in a sensor network takes___________ measurements of physical phenomena such as heat, sound, light ,pressure or motion
• Each sensor has a finite sensing range, determined by the___________ floor of the sensor
• The size of wireless sensor system is limited mostly by A: the cost of maintaining communication links B: the cost of sensor hardware
• sensor network is subject to a unique set of resource constraints such as
• Information collected by and transmitted on a sensor network describes conditions of physical environments and requires advanced query interfaces and search engines to effectively support user-level functions