Learn Everything About Network Sensors

22 Questions | By Gdeisat1 | Updated: Dec 2, 2022 | Attempts: 975

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Learn Everything About Network Sensors - Quiz

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!

Questions and Answers

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