# Introduction To Internet Of Things | NPTEL | Week 4 Solutions

This set of MCQ(multiple choice questions) focuses on the Introduction To Internet Of Things NPTEL Week 4 Solutions.

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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

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

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

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

Introduction To Internet Of Things NPTEL Week 4 Solutions

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

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

Introduction To Internet Of Things NPTEL Week 4 Solutions

Q8. Which of the following is/are NOT feature/features of UAV networks?

a. Mesh or star networks
c. Large coverage area
d. None of these

Introduction To Internet Of Things NPTEL Week 4 Solutions

Q9. Which of the following is NOT a UAV network constraint?

b. Prone to malfunction
c. Very Complex
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

Introduction To Internet Of Things NPTEL Week 4 Solutions

Q11. The full form of FANET is?

d. None of these

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

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

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

Introduction To Internet Of Things NPTEL Week 4 Solutions

### 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

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

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

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

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

Introduction To Internet Of Things NPTEL Week 4 Solutions

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

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

Introduction To Internet Of Things NPTEL Week 4 Solutions

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)

Introduction To Internet Of Things NPTEL Week 4 Solutions

Q9. The two popular network topologies in UAV networks are

a) Ring
b) Mesh and Star
c) Bus
d) All of these

Q10. Which of the following is NOT an issue in UAV networks?

a) Slow change in network topology
b) Malfunctioning of UAVs
d) Relative position of UAV may change

Introduction To Internet Of Things NPTEL Week 4 Solutions

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

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

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

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

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

Introduction To Internet Of Things NPTEL Week 4 Solutions

### 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

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

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

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

Introduction To Internet Of Things NPTEL Week 4 Solutions

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

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

Introduction To Internet Of Things NPTEL Week 4 Solutions

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

Introduction To Internet Of Things NPTEL Week 4 Solutions

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

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

Introduction To Internet Of Things NPTEL Week 4 Solutions

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

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

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

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

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

Introduction To Internet Of Things NPTEL Week 4 Solutions

### 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

Q2. Which of the following is TRUE for wireless sensor networks if transmission range â‰¥ 2* sensing range?

a) Only coverage
b) Only connectivity
c) Coverage implies connectivity
d) Connectivity implies coverage

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

Q4. Which of the following is NOT a characteristic of UAV networks?

b) Static network topology
c) Dynamic relative position of UAVs
d) None of the above

Introduction To Internet Of Things NPTEL Week 4 Solutions

Q5. Which of the following is a challenge in human-centric sensing?

b) Participant selection
c) Privacy of users
d) All of the above

Introduction To Internet Of Things NPTEL Week 4 Solutions

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

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

Introduction To Internet Of Things NPTEL Week 3 Solutions

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

Q9. Electromagnetic communication in nanonetworks takes place in _________ frequency band.

a) GHz
b) THz
c) Nanometer
d) All of the above

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

Introduction To Internet Of Things NPTEL Week 3 Solutions

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

Q12. While maintaining sensing coverage in sensor networks, a crossing is covered if it is in the interior region of _____________ one nodeâ€™s coverage disk.

a) At most
b) Only
c) At least
d) More than

Q13. Which of the following UAV network topology is decentralized?

a) Star
b) Infrastructure mesh
d) None of the above

Q14. Can node failure result in partition of networks in mobile wireless sensor networks?

a) Yes
b) No
c) Not Applicable

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

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