EC8702 AWSN QUIZ - UNIT II

MEMS stands for

A sensor network is subject to a unique set of resource constraints such as

• Finite on-board battery power

• Limited network communication bandwidth

• both

In a typical sensor network, each sensor node operates untethered and has a microprocessor and a small amount of memory for signal processing and task scheduling

• True

• False

Each node is equipped with one or more sensing devices such as acoustic microphone arrays, video or still cameras, IR, seismic or magnetic sensors

• True

• False

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

• True

• False

_______ routes user queries or commands to appropriate nodes in a sensor network

• Bridge

• Gateway

Communicating one bit over the wireless medium at short ranges consumes _____ energy than processing that bit

• less

• more

For the Sensoria sensors and Berkley motes, the ratio of energy consumption for communication and computation is in the range of 1000 to _____. (100/1000/10000)

A sensor network is designed to collect information from a _____ environment

• logical

• physical

It is more appropriate to address nodes in a sensor network by _______than by ________.

• IP address/physical properties

• physical properties/IP address