Learn Everything About Network Sensors
A sensor network is a group of sensors where each sensor monitors data in a different location and sends that data to a central location for storage, viewing, and analysis. Learn Everything about Network Sensors in this quiz!
- 1.Sensor Network is
- A.
Heterogeneous system consisting of tiny sensors.
- B.
Homogeneous system used in wireless.
- C.
Very important for security.
- D.
All Above.
- 2.Challenges in wireless sensor networks are
- A.
Big physical size.
- B.
Node mobility.
- C.
Self-configuring.
- D.
Both b and c.
- 3.Devices may be “always on” or “low duty cycle” in
- A.
WiMAX and WCDMA.
- B.
HSDPA and HSUPA.
- C.
Wireless sensors and Body area networks.
- D.
All above
- 4.Grid’s Location Service (GLS) uses
- A.
Centralized location servers.
- B.
Distributed location servers.
- C.
Hybrid location servers.
- D.
All above.
- 5.RF signal strength is used
- A.
To check type of network.
- B.
To measure distance.
- C.
To check whether network is wireless or wired.
- D.
None of all.
- 6.Ideal positioning technique is
- A.
By measurement of distance.
- B.
By checking signal strength.
- C.
By Trilateration.
- D.
All above.
- 7.WSN opportunities are in
- A.
IC design.
- B.
Elderly care.
- C.
Oil gas industry.
- D.
All above.
- 8.Jamming is the attack of
- A.
IP layer.
- B.
TCP layer.
- C.
Physical layer.
- D.
All above.
- 9.Probing and Redundancy are defenses at
- A.
Application layer.
- B.
Network layer.
- C.
Data link layer.
- D.
None of all.
- 10.Flooding attack at transport layer is defended by
- A.
Limiting number of connections.
- B.
Stopping the clients.
- C.
Authenticating all messages.
- D.
All above.
- 11.Some security threat in WSNs are
- A.
Insertion of malicious code.
- B.
Interception of messages.
- C.
Injection of false data.
- D.
All above.
- 12.Routing security in wireless sensor networks faces the problem that
- A.
Current routing protocols for wireless sensor networks do not consider security.
- B.
Routing in wireless sensor networks is very fast.
- C.
No routing has been implemented.
- D.
All above.
- 13.Some routing related attacks are
- A.
Selective forwarding.
- B.
Sinkhole.
- C.
Viruses.
- D.
Both a and b.
- 14.Grid’s Location Service (GLS) uses
- A.
Centralized location servers.
- B.
Distributed location servers
- C.
Hybrid location servers.
- D.
All above.
- 15.Hello Flooding attack at transport layer (in WSN) is defended by
- A.
Limiting number of connections.
- B.
Stopping (de-activated) the sensors.
- C.
Authenticating all messages.
- D.
All above.
- 16.A Sybil node in WSN is defined as
- A.
A node that receives packets at one point in the network, tunnels them through a less latency link than the network links to another point in the network and replay packets there locally
- B.
A node that attract nearly all the traffic from a particular area through a compromised node
- C.
A malicious or subverted node forges the identities of more than one node or fabricates identity
- D.
None of the above
- 17.A sensor is mainly composed of microcontroller, battery and _____________?
- A.
Transponder
- B.
Antenna
- C.
Modem
- D.
Multiplexer.
- 18.Routing security in wireless sensor networks faces the problem that
- A.
Current routing protocols for wireless sensor networks do not consider security.
- B.
Routing in wireless sensor networks is very fast.
- C.
No routing has been implemented.
- D.
All above.
- 19.A sensor is mainly composed of microcontroller, antenna and _____________?
- A.
Transponder
- B.
Battery
- C.
Modem
- D.
Multiplexer.
- 20.GPS devices can work during daylight and night hours.
- A.
Big physical size.
- B.
Node mobility.
- C.
Self-configuring.
- D.
Both b and c.
- 21.WSN opportunities are in?
- A.
IC design.
- B.
Elderly care.
- C.
Oil gas industry.
- D.
All above.
- 22.A sinkhole node in WSN is defined as
- A.
A node that receives packets at one point in the network, tunnels them through a less latency link than the network links to another point in the network and replay packets there locally
- B.
A node that attract nearly all the traffic from a particular area through a compromised node
- C.
A malicious or subverted node forges the identities of more than one node or fabricates identity
- D.
None of the above
Questions: 12 | Attempts: 21563 | Last updated: Oct 25, 2021
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