This set of MCQ(multiple choice questions) focuses on the Introduction To Internet Of Things NPTEL Week 4 Solutions.
You should practice these questions to improve fundamentals of Internet of Things needed for various interviews (like company interview, campus interview, walk-in interview), entrance exams, placements and other competitive exams. All the questions in this particular section are based on only “Introduction To Internet Of Things NPTEL Week 4 Solutions“.
Course layout (All week answers link)
Week 0
Week 1: Introduction to IoT
Week 2: Basics of Networking
Week 3: Communication Protocols
Week 4:Â Sensor Networks
Week 5:Â Interoperability in IoT
Week 6: Introduction to Python programming
Week 7:Â Implementation of IoT with Raspberry Pi (contd), Introduction to SDN, SDN for IoT
Week 8:Â SDN for IoT (contd), Data Handling and Analytics, Cloud Computing
Week 9:Â Cloud Computing(contd), Sensor-Cloud
Week 10:Â Fog Computing, Smart Cities and Smart Homes
Week 11: Connected Vehicles, Smart Grid, Industrial IoT
Week 12: Industrial IoT (contd), Case Study: Agriculture, Healthcare, Activity Monitoring
NOTE: You can check your answer immediately by clicking show answer button. Moreover, this set of “Introduction To Internet Of Things NPTEL Week 4 Solution” contains 15 questions.
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Introduction To Internet Of Things NPTEL Week 4 Solutions
Q1. State whether the following statement is true or false.
Statement: Coverage in WSN is defined as the area-of-interest is covered satisfactorily.
a) True
b) False
Answer: a) True
Q2. If transmission range >= 2* sensing range,
a) Coverage implies greater coverage
b) Coverage implies connectivity
c) Both (a) and (b)
d) None of these
Answer: b) Coverage implies connectivity
Q3. The two types of reporting in WSN are –
a. Event driven and machine driven
b. Event driven and weather driven
c. Event driven and on demand
d. None of these
Answer: c. Event driven and on demand
Q4. The objective of coverage in WSN is to use a _______________ number of sensors and _______________ the network lifetime.
a. minimum, minimize
b. minimum, maximize
c. maximum, minimize
d. maximum, maximize
Answer: b. minimum, maximize
Q5. Select the correct option.
The disadvantages of stationary Wireless Sensor Networks are –
Statement-I: Node failure may result in partition of networks.
Statement-II: Topology cannot change automatically.
a. Statement-I True, Statement-II False
b. Both Statements are False
c. Both Statements are True
d. None of these
Answer: c. Both Statements are True
Q6. A _________________ in MWSN moves in order to collect data from sensor nodes and goes to the sink and delivers the collected data from different sensor nodes.
a. Drop
b. Molecule
c. Mule
d. None of these
Answer: c. Mule
Q7. ________________ allows distributed sensing carried by humans and the goal is not just to collect data but to allow the common people to assess and share the knowledge.
a. Voluntary sensing
b. Compressive sensing
c. Dynamic sensing
d. Participatory sensing
Answer: d. Participatory sensing
Q8. Which of the following is/are NOT feature/features of UAV networks?
a. Mesh or star networks
b. Multi-tasking
c. Large coverage area
d. None of these
Answer: d. None of these
Q9. Which of the following is NOT a UAV network constraint?
a. Frequent link breakages
b. Prone to malfunction
c. Very Complex
d. None of these
Answer: d. None of these
Q10. In _____________________ configuration, UAVs form multiple star topology. One node from each group connects to the ground station.
a. Multi-star
b. Ring
c. Both (a) and (b)
d. None of these
Answer: a. Multi-star
Q11. The full form of FANET is?
a. Flying Ad Hoc Network
b. Fast Ad Hoc Network
c. Fidelity Ad Hoc Network
d. None of these
Answer: a. Flying Ad Hoc Network
Q12. Low-end sensor nodes are those-
a. Whose deployment has high density in order to increase network lifetime and survivability.
b. Who perform basic functions such as data aggregation, auto configuration, and power saving.
c. Both (a) and (b)
d. None of these
Answer: c. Both (a) and (b)
Q13. Which of the following are the components of the M2M ecosystem?
a. Trees
b. Ocean
c. Device Providers
d. Non-service users
Answer: c. Device Providers
Q14. State whether the following statement is true or false
Statement: The M2M Device Platform enables access to objects connected to the Internet anywhere any time.
a) True
b) False
Answer: a) True
Q15. State whether the following statement is true or false
Statement: The M2M Application Platform provides integrated services based on device collected data-sets.
a) True
b) False
Answer: a) True
Introduction To Internet Of Things NPTEL Week 4 Solutions
Q1. When an intruder enter into the agricultural field through the boundary (perimeter) of the field, a/an __________ sensor can be used to detect the object and a/an ___________ sensor can be used to sense the distance at which the object is located.
a) PIR, Ultrasonic
b) Ultrasonic, PIR
c) Humidity, PIR
d) None of these
Answer: a)
Q2. __________ is defined as, all the nodes are connected in the network, so that sensed data can reach to sink node?
a) Coverage
b) Connectivity
c) Both a) and b)
d) None of these
Answer: b)
Q3. The objective of coverage in WSN is
a) To use a minimum number of sensors and maximize the network lifetime
b) To use a maximum number of sensors and maximize the network lifetime
c) To use a minimum number of sensors and minimize the network lifetime
d) To use a maximum number of sensors and minimize the network lifetime
Answer: a)
Q4. State True or False
Statement-I: If transmission range <=2* sensing range, coverage implies connectivity.
a) Statement-I is True
b) Statement-I is False
Answer: b)
Q5. A mobile entity that collects the data from sensor nodes goes to the sink, and delivers the collected data from different sensor nodes are called?
a) Data Molecule
b) Static Node
c) Data Mules
d) None of these
Answer: c)
Q6. Human-centric Sensing is possible because of?
a) Smartphone and PDAs
b) Miniaturization and Proliferation of devices
c) Both a) and b)
d) None of these
Answer: c)
Q7. Which of the following are the roles played by humans in Human-centric Sensing?
a) Sensing Targets
b) Sensor Operators
c) Data Source
d) All of these
Answer: d)
Q8. Which of the following is/are NOT goal of Participatory Sensing?
a) To only collect data
b) Not just collect data, but allow common people to access data and share knowledge
c) To only access data
d) Both a) and c)
Answer: d)
Q9. The two popular network topologies in UAV networks are
a) Ring
b) Mesh and Star
c) Bus
d) All of these
Answer: b)
Q10. Which of the following is NOT an issue in UAV networks?
a) Slow change in network topology
b) Malfunctioning of UAVs
c) Itermittent link nature
d) Relative position of UAV may change
Answer: a)
Q11. The scalability in single UAV system as compared to multi-UAV system is?
a) Limited
b) High
c) Very High
d) None of these
Answer: a)
Q12. Typical types of mesh networks in UAV networks are
a) Solid Mesh and Hierarchical Mesh
b) Plane Mesh and Solid Mesh
c) Flat Mesh and Hierarchical Mesh
d) None of these
Answer: c)
Q13. State True or False
Statement-I: SCADA is designed for isolated systems using proprietary solutions, whereas M2M is designed for cross-paltform integration.
a) False
b) True
Answer: b)
Q14. Which of the following is NOT a feature of M2M?
a) Large number of nodes or devices
b) High cost
c) Energy efficient
d) Small traffic per machine/device
Answer: b)
Q15. Which of the following is NOT an M2M node type?
a) Low End Node
b) High End Node
c) Out End Node
d) None of these
Answer: c)
Previous Year – Introduction To Internet Of Things NPTEL Week 4 Solutions
Q1. Which of the following UAV topology is self-configuring?
a) Mesh
b) Star
c) Both mesh and star
d) Grid
Answer: a) Mesh
Q2. In WMSNs application, which of the following deployment can provide better sensing and prolong network lifetime?
a) Scalar sensor nodes
b) Camera sensor nodes
c) Both scalar and camera sensor nodes
d) Vector sensor nodes
Answer: c) Both scalar and camera sensor nodes
Q3. In which of the following algorithms only a subset of nodes in the WASN participate in sensing, communication, and computation?
a) Localized
b) Distributed
c) Centralized
d) All of these
Answer: a) Localized
Q4. In general, the target-tracking problem consists of a WSN, whose nodes are strategically or randomly deployed across the sensor field. Is the statement true?
a) Yes
b) No
Answer: a) Yes
Q5. In Ad-Hoc FANETs, which of the following set-up can be considered as ground network?
a) Stationary WSNs
b) Control stations
c) VANETS
d) All of these
Answer: d) All of these
Q6. Which of the following components in M2M monitors the status of devices and M2M area networks, and controls them based on their status?
a) M2M User Platform
b) M2M Device Platform
c) M2M Service Platform
d) M2M Access Platform
Answer: b) M2M Device Platform
Q7. In the guided target-tracking problem formulation, a tracker is added to the problem. The tracker follows the trajectory defined by beacon nodes to intercept the target. Which of the following objectives best define this tracking algorithm?
a) to fuse data about the target
b) to use the least amount of communication to reach the target
c) to reach the target in the shortest possible time
d) to increase the network lifetime
Answer: c) to reach the target in the shortest possible time
Q8. In gateway selection algorithm in FANETs, each UAV acquires the information of all UAVs within its _________ hop(s).
a) One
b) Two
c) More than one
d) Can’t be specific
Answer: b) Two
Q9. A crossing is covered if it is in the __________ region of at least one node’s coverage disk.
a) exterior
b) interior
c) either exterior or interior
d) boundary
Answer: b) interior
Q10. There are several major challenges related to target-tracking applications. Which of the following is NOT among those challenges?
a) target recovery
b) node non-cooperation
c) future-position estimation
d) energy management
Answer: b) node non-cooperation
Q11. Which of the following components in M2M manages inquiry?
a) M2M User Platform
b) M2M Device Platform
c) M2M Service Platform
d) M2M Access Platform
Answer: a) M2M User Platform
Q12. Which of the following is NOT regarded as one of the major scatters of underwater sound in Underwater Acoustic Sensor Networks?
a) Non-linear internal waves
b) Solitons
c) Linear internal waves
d) None of these
Answer: c) Linear internal waves
Q13. In Optimal Geographical Density Control (OGDC) algorithm, a node __________ if its coverage area is completely covered.
a) wakes up
b) starts listening
c) sleeps
d) backs off
Answer: c) sleeps
Q14. Which of the following elements of target-tracking algorithm can perform data fusion?
a) Active node
b) Inactive node
c) Beacon node
d) Sink node
Answer: d) Sink node
Q15. Which of the following components of Mobile Wireless Sensor Networks (MWSN) moves in order to collect data from sensor nodes?
a) Mobile sensor node
b) Data mule
c) Mobile sink
d) Both data mule and mobile sink
Answer: d) Both data mule and mobile sink
Previous Course – Week 4 Solutions
Q1. Which of the following M2M node types have no IP support?
a) Low-end sensor nodes
b) Mid-end sensor nodes
c) High-end sensor nodes
d) All of the above
Answer: a)
Q2. Which of the following is TRUE for wireless sensor networks if transmission range ≥ 2* sensing range?
a) Only coverage
b) Only connectivity
c) Coverage implies connectivity
d) Connectivity implies coverage
Answer: c)
Q3. Which of the following structure is usually used in guided formulation of target tracking in sensor networks?
a) Face
b) Tree
c) Cluster
d) All of the above
Answer: a)
Q4. Which of the following is NOT a characteristic of UAV networks?
a) Intermittent link nature
b) Static network topology
c) Dynamic relative position of UAVs
d) None of the above
Answer: b)
Q5. Which of the following is a challenge in human-centric sensing?
a) Device lifetime
b) Participant selection
c) Privacy of users
d) All of the above
Answer: d)
Q6. Which of the following components in M2M Service Platform takes care of App management and App searching?
a) Device
b) User
c) Application
d) Access
Answer: d)
Q7. In distributed coverage algorithm, nodes compute their position by communicating with _________________________.
a) Central node
b) Sink node
c) Neighbors only
d) None of the above
Answer: c)
Q8. In multi-star UAV network topology, _______ node(s) from each group connects to the ground station.
a) Zero
b) One
c) More than one
d) All
Answer: b)
Q9. Electromagnetic communication in nanonetworks takes place in _________ frequency band.
a) GHz
b) THz
c) Nanometer
d) All of the above
Answer: b)
Q10. Which of the following is NOT a property of Mobile Ad Hoc Network?
a) Self-Collaborate
b) Self-Heal
c) Self-Protect
d) Self-Optimize
Answer: a)
Q11. Which of the following layers seamlessly integrate IP network with M2M area network in a non-IP based M2M network?
a) Application layer
b) Transport layer
c) Network layer
d) Physical layer
Answer: a)
Q12. While maintaining sensing coverage in sensor networks, a crossing is covered if it is in the interior region of _____________ one node’s coverage disk.
a) At most
b) Only
c) At least
d) More than
Answer: c)
Q13. Which of the following UAV network topology is decentralized?
a) Star
b) Infrastructure mesh
c) Ad hoc mesh
d) None of the above
Answer: c)
Q14. Can node failure result in partition of networks in mobile wireless sensor networks?
a) Yes
b) No
c) Not Applicable
Answer: b)
Q15. Which of the following is TRUE for high-end sensor nodes in M2M node types?
a) High density deployment
b) Unable to handle multimedia data
c) Mobility is essential
d) All of the above
Answer: c)
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