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Wireless Sensor Network

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This article lists 100+ Wireless Sensor Network MCQs for engineering students. All the Wireless Sensor Network Questions & Answers given below include a hint and wherever possible link to the relevant topic. This is helpful for the users who are preparing for their exams, interviews, or professionals who would like to brush up their fundamentals on the Wireless Sensor Network topic.

Wireless Sensor Network is also represented as “WSN” and it is a group of dedicated sensors that are spatially dispersed to records, monitors physical environmental parameters, and organizes that data at a central location. WSN measures physical parameters such as temperature, pressure, wind, humidity, and many more.

This network comprises base stations and nodes at different locations, that communicate wirelessly. WSN for radio communication can be implemented in 4 topologies namely – Star type topology, tree-type topology, and Mesh type topology.

Depending on the physical environment, WSN is classified into 5 types namely underground type WSN, terrestrial type WSN, underwater type WSN, multimedia type WSN, and mobile type WSN. The advantage of WSN is to avoid the need for wiring, it is a flexible technology, and can be integrated on a large scale.

1). WSN stands for __________.
HintWSN stands for Wireless Sensor Network.
2). WSN are _________ dispersed.
HintWSN are spatially dispersed.
3). Which of the following is the function of a dedicated sensor?
HintThe function of a dedicated sensor is that it records and monitors the physical condition of the environment and organizes collected data at a location that is centralized.
4). WSN measures _________ physical parameter.
HintWSN measures physical parameters like sound, temperature, pollution, humidity, etc.
5). Does WSN measures wind parameters?
HintYes, WSN measures wind parameters.
6). WSN depends on ________ connectivity.
HintWSN depends on wireless connectivity.
7). Data in WSN is transmitted by ________ connectivity.
HintData in WSN is transmitted by wireless connectivity.
8). WSN are spatially distributed _________ sensors.
HintWSN are spatially distributed autonomous sensors.
9). The development of WSN was motivated from __________.
HintThe development of WSN was motivated by military-like surveillance and battlefield.
10). Which of the following are the applications of WSN?
HintThe applications of WSN are health monitoring, industrial process monitoring, and control, military.
11). WSN is built with __________.
HintWSN is built with a large number of nodes.
12). Are each node in WSN interconnected?
HintYes. each node in WSN interconnected.
13). The components of a sensor node is _________.
HintThe components of a sensor node are a radio transceiver, microcontroller circuit, and electronic circuit.
14). What is the purpose of radio transceiver in WSN?
HintThe purpose of the transceiver in WSN is to transmit and receive the data from other nodes.
Read more about Radio Transceiver.
15). A radio transceiver in WSN contains which component internally?
HintA radio transceiver in WSN contains an antenna internally to communicate with external nodes.
16). Electronic circuit interfaces with which of the following component’s in WSN?
HintThe electronic circuit that interfaces with sensor and energy source component’s in WSN.
Read more about Sensors.
17). The energy source used in WSN are __________.
HintThe energy source used in WSN is a battery.
18). Does the size of a sensor node vary?
HintYes, the size of a sensor node varies.
19). Which of the following constraints depend on the cost and size of the sensor in WSN?
HintThe constraints that depend on the cost and size of the sensor in WSN are memory, speed, energy, and bandwidth.
20). The cost of a sensor depends on ________ factors.
HintThe cost of a sensor depends on the complexity of design factors.
21). A sensor network in WSN can be of _______ topology.
HintA sensor network in WSN can be of multi-hop wireless mesh, advanced multi-hop wireless mesh, and star topology.
22). A star network is implemented using _____ distribution paradigm in computer networks.
HintA star network is implemented using the spoke hub distribution paradigm in computer networks.
23). WMN in network topology stands for _________.
HintWMN in network topology stands for a wireless mesh network.
24). WMN is made up of ______ type of nodes.
HintWMN is made up of radio type of nodes.
25). WMN can also be a form of _______ network.
HintWMN can also be a form of wireless ad hoc network.

Wireless Sensor Network Interview Questions & Answers

26). A wireless mesh network contains _______ components.
HintA wireless mesh network contains mesh clients, gateways, and mesh router components.
27). The propagation technique in WSN between hops of network can be ________.
HintThe propagation technique in WSN between hops of the network can be flooding and routing.
28). A process that selects paths for traffic in a network is called _______.
HintA process that selects paths for traffic in a network is called routing.
Read more about Routing Algorithm.
29). Routing is performed in _______ type of networks.
HintRouting is performed in 3 types of networks namely computer network, public switched telephone network, and circuit-switched.
30). PSTN in routing network stands for ________.
HintPSTN in routing network stands for the public switched telephone network.
31). Which of the following are the power sources used in WSN?
HintPower sources used in WSN are Perpetuum and ReVibe energy.
32). Does WSN cope with if a node fails to function?
HintYes, WSN copes, if a node fails to function.
33). Does WSN scaled to large-scale deployment?
HintYes, WSN scaled to large-scale deployment.
34). Does WSN withstand in a harsh environment?
HintYes, WSN can withstand in harsh environment.
35). Does WSN withstand has cross-layer optimization?
HintYes, WSN withstand has cross-layer optimization.
36). Which of the following are the applications of cross-layer optimization?
HintThe applications of cross-layer optimization are scheduling, adaption, and resource allocation.
37). Which of the following are the characteristics of WSN?
HintThe characteristics of WSN are heterogeneity, homogeneity, and ease of use.
38). How many problems exits in traditional WSN?
HintThere are 3 problems that exist in traditional WSN.
39). Does the traditional layer approach of WSN have ability to adapt to environmental changes?
HintNo, a traditional layer approach of WSN does not have the ability to adapt to environmental changes.
40). Does the traditional layer approach of WSN applicable to wireless networks?
HintNo, a traditional layer approach of WSN is not applicable to wireless networks.
41). Can the traditional layer approach of WSN share different information among different layers?
HintNo, the traditional layer approach of WSN doesn't share different information among different layers.
42). Which type of layer can make optimal modulation to improve transmission performance in WSN?
HintA cross-layer can make optimal modulation to improve transmission performance in WSN.
43). A cross-layer in WSN improves ________ factors.
HintA cross-layer in WSN improves 3 factors namely, QoS, data rate, and energy efficiency.
44). QoS in WSN stands for __________.
HintQoS in WSN stands for the quality of service.
45). _________ can be imagined as small computers.
HintSensor nodes can be imagined as small computers.
46). A sensor node with a processing unit has ______ computational power.
HintA sensor node with a processing unit has limited computational power.
47). A sensor node with a processing unit has _______ memory.
HintA sensor node with a processing unit has limited memory.
48). A sensor node with a processing unit has _______ sensors.
HintA sensor node with a processing unit has limited sensors.
49). A sensor node with a processing unit has ______ MEMS.
HintA sensor node with a processing unit has limited MEMS,.
50). MEMS stands for _________.
HintMEMS stands for Micro Electro Mechanical Systems.

Wireless Sensor Network Exam Questions & Answers

51). Additional components of WSN are _________.
HintAdditional components of WSN are ASCIs, RS232, and USB.
52). ASIC stands for __________.
53). ASIC is a _________.
HintASIC is an IC chip.
54). USB stands for _______.
HintUSB stands for Universal serial bus.
55). USB a _______ type device.
HintUSB a plug-in type device.
56). RS232 stands for _______.
HintRS232 stands for Recommended standard 232.
57). RS232 follows _____ type of communication.
HintRS232 follows a serial type of communication.
58). USB follows _____ type of communication.
HintUSB follows a serial type of communication.
59). WSN communicates with _____ via gateway.
HintWSN communicates with LAN and WAN via a gateway.
60). LAN stands for ________.
HintLAN stands for Local Area Network.
Read more about LAN.
61). WAN stands for ________.
HintWAN stands for wide area network.
62). A wireless WAN is used for ______ power device.
HintA wireless WAN is used for low-power device.
63). A low-power wireless device is called _______.
HintA low-power wireless device is called LPWAN.
64). LPWAN stands for ________.
HintLPWAN stands for Low power wide area network.
65). WSN uses ______ to address self-configuration issue.
HintWSN uses protocols and algorithms to address the self-configuration issue.
66). Lifetime maximization is represented as ______ ratio.
HintLifetime maximization is represented as the energy/power ratio.
67). WSN uses _______ routing mechanism.
HintWSN uses the LNDIR routing mechanism.
68). LNDIR stands for _______.
HintLNDIR stands for Lightweight nonincreasing delivery latency interval routing.
69). Which of the following OS implemented in WSN?
HintThe OS implemented in WSN are Tiny OS, eCos, and uC/OS.
70). OS stands for _________.
HintOS stands for operating system.
71). eCos stands for _________.
HinteCos stands for Embedded configurable OS.
72). uC/OS stands for ________.
HintuC/OS stands for microcontroller OS.
73). uC/OS is a _________ OS.
HintuC/OS is an RTOS.
74). RTOS stands for ________.
HintRTOS stands for Real-time OS.
75). RTOS was designed by ________.
HintRTOS was designed by J. Labrosse.
76). RTOS was designed by J. Labrosse in _______ year.
HintRTOS was designed by J. Labrosse in 1991.
77). RTOS was written in _______ programming language.
HintRTOS was written in the C programming language.

Wireless Sensor Network MCQs with Answers

78). WATS stands for ________.
HintWATS stands for Wide-area tracking system.
79). What is the purpose of WATS in WSN?
HintThe purpose of WATS in WSN is to detect ground-based nuclear devices.
80). WATS was developed at _______ lab.
HintWATS was developed at Lawrence live more national lab.
81). WATS is made up of ______ type sensors.
HintWATS is made up of Gamma and Neutron-type sensors.
82). WATS uses ________ algorithm.
HintWATS uses a Bayesian statistic algorithm.
83). WSN in wine production is used for ______ purposes.
HintWSN in wine production is used for monitoring purposes.
84). WSN in water monitoring application monitors _______ of water.
HintWSN in water monitoring application monitors quality, level and saves water from being wasted.
85). WSN in data logging ______ the data.
HintWSN in data logging collects the data.
86). What is the advantage of WSN in loggers?
HintThe advantage of WSN in loggers is to feed live data.
87). CBM stands for ________.
HintCBM stands for Condition based maintenance.
88). CBM is used in ______ application of WSN.
HintCBM is used in the health monitoring application of WSN.
89). WSN can be placed in ______ type location.
HintWSN can be placed in untethered vehicles and rotating machinery-type locations.
90). WSN uses _______ modeling for social simulation.
HintWSN uses agent-based modeling for social simulation.
91). Which of the following architecture of WSN possess weak security?
HintInfrastructure less architecture of WSN possesses weak security.
92). Is security a big concern in WSN?
HintYes, security a big concern in WSN.
93). OGC stands for ________.
HintOGC stands for Open geospatial consortium.
94). Which process is used for safe communication in WSN?
HintBoth encryption and decryption process is used for safe communication in WSN.
95). Encryption in WSN is used on _______ side.
HintEncryption in WSN is used on the transmitter side.
96). Decryption in WSN is used on _______ side.
HintDecryption in WSN is used on the receiver side.
97). Does the encryption and decryption process use key?
HintYes, the Encryption and decryption process uses a key.
98). Tree topology is also called as ________.
HintTree topology is also called a cascaded star.
99). The different types of WSN are _______.
HintThe different types of WSN are terrestrial, underground, and underwater.
100). The limitations of WSN are _______.
HintThe limitations of WSN are posses 8MHz, works on batteries, and provides less storage space.
101). What is the advantage of a wireless sensor network in industrial applications?
HintThe advantages of a wireless sensor network in the industry are reduced deployment, flexibility in installing, moving, and rotating equipment.
102). What is the disadvantage of a wireless sensor network in industrial applications?
HintThe disadvantages of a wireless sensor network in the industry are network delay and multipath fading.
103). What is the advantage of wireless sensor network in precision agriculture?
HintThe advantages of a wireless sensor network in precision agriculture are large crop monitoring, forest fire-prevention, and biomass studies.
104). What is the disadvantage of a wireless sensor network in precision agriculture?
HintThe disadvantages of a wireless sensor network in precision agriculture are low battery life, high hardware costs, and limited bandwidth.
105). What is the advantage of wireless sensor networks in health care?
HintThe advantages of a wireless sensor network in health care are monitoring in an ambulatory setting and early detection of abnormal conditions.
106). What is the disadvantage of a wireless sensor network in health care?
HintThe disadvantages of a wireless sensor network in health care are cost maintenance and insecurity of patients.
107). What is the advantage of wireless sensor networks in transportation?
HintThe advantages of wireless sensor networks in transportation are high accuracy, maintenance, and flexibility.
108). What is the disadvantage of wireless sensor networks in transportation?
HintThe disadvantages of wireless sensor networks in transportation are connectivity, cost, and congestion.
109). What is the advantage of wireless sensor networks in environmental monitoring?
HintThe advantages of a wireless sensor network in environment monitoring are, detecting forest fires, obtain the changes in temperature and humidity.
110). What is the disadvantage of a wireless sensor network in environmental monitoring?
HintThe disadvantages of a wireless sensor network in environmental monitoring are the biofouling problem in the marine environment and security of data.

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