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The applications of WSN are:


A) monitoring of objects only.
B) monitoring of an area only.
C) monitoring of both area and objects
D) all of above

E) A) and B)
F) A) and C)

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wireless sensor networks are


A) data centric
B) address centric
C) both
D) none opf above

E) A) and B)
F) A) and C)

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The more capable nodes can naturally play the role of __________


A) cluster leader
B) cluster node
C) cluster head
D) cluster master

E) B) and D)
F) A) and C)

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Wireless Sensor Networks are networks that consists of sensors which 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 consists of protocols and algorithms with self-organizing capabilities.


A) a and b
B) b and c
C) a , b and c
D) a and c

E) C) and D)
F) None of the above

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Following are application areas of wireless sensor network A: asset and warehouse management B: automotive C: building monitoring and control D: environmental monitoring


A) a b c
B) b c d
C) a c d
D) a b c d

E) All of the above
F) A) and B)

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_____sensor can be tasked to look for animals of a particular size and color. _____sensor can be tasked to detect the presence of a particular type of vehicle


A) i.acoustic ii.camera
B) i.camera ii.acoustic
C) i.camera ii.camera
D) i.acoustic ii.acoustic

E) A) and D)
F) A) and C)

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In wireless sensor network


A) communication delays are consistent and predictable
B) no special master clocks are available
C) neither a nor b
D) a and b both

E) A) and B)
F) A) and D)

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___________sensors instrumented in a building can detect the direction and magnitude of a quake and provide an assessment of the building safety


A) seismic
B) acoustic
C) acoustic or seismic
D) position

E) B) and C)
F) A) and D)

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select the correct statement


A) the purpose of a sensor system is to obtain information that is as extensive and detailed as possible about the unknown parts of the world state
B) the main idea of information based sensor tasking is to base sensor selection decisions on information content as well as constraints on resource consumption, latency and other costs
C) a and b both correct
D) a and b both incorrect

E) A) and C)
F) A) and B)

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Time difference caused by the lack of a common time origin are referred to as___________


A) clock phase difference
B) clock bias
C) neither a nor b
D) a and b both

E) All of the above
F) C) and D)

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In __________sensor network systems, we must balance the information contribution of individual sensors against the cost of communicating with them


A) centralized
B) distributed
C) centralized as well as distributed
D) none of above

E) B) and D)
F) A) and C)

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B

The size of wireless sensor system is limited mostly by A: the cost of maintaining communication links B: the cost of sensor hardware


A) a
B) b
C) both
D) neither a nor b

E) C) and D)
F) B) and C)

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___________allows the same time or frequency division multiplexing to be reused across non overlapping clusters


A) migration
B) clustering
C) classification
D) centralization

E) None of the above
F) B) and C)

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The challenge in sensor network databases is/ are


A) the system as a whole is highly volatile
B) relational tables are not static since new data is continuously being sensed
C) the high energy cost of communication encourages in-networking processing during query execution
D) all of the above

E) A) and B)
F) B) and C)

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Each sensor in a sensor network takes___________ measurements of physical phenomena such as heat, sound, light ,pressure or motion


A) time stamped
B) time sequenced
C) time sequenced as wella as time stamped
D) either time sequenced or time stamped

E) None of the above
F) C) and D)

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In wireless sensor network


A) no special master clocks are available
B) connections are ephemeral
C) communication delays are inconsistent and unpredictable
D) all of above

E) A) and B)
F) All of the above

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Following are application areas of wireless sensor networks A: health care B: industrial process control C: military battlefield awareness D: security and surveillance


A) a b c
B) b c d
C) a c d
D) a b c d

E) B) and D)
F) All of the above

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D

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


A) a only
B) b only
C) neither a nor b
D) a and b both

E) A) and B)
F) A) and C)

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In__________ database systems, data storage may be allocated among several geographical separated locations, connected by a communications network


A) centralized
B) distributed
C) centralized as well as distributed
D) none of above

E) A) and B)
F) A) and C)

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__________are nodes that aid in passing traffic from one cluster to another


A) gateway
B) gradient
C) router
D) termional node

E) C) and D)
F) A) and C)

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A

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