Introduction to Internet of Things: Barrier Coverage
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Questions and Answers

What is the objective of Barrier Coverage?

  • Ensuring no point is covered by sensors
  • Ensuring every point is covered by multiple sensors
  • Maintaining connectivity between sensors
  • Covering a region with at least one sensor (correct)

    • In K-barrier coverage, how many sensors are required to cover a region?

  • At least two sensors
  • Exactly one sensor
  • At least K sensors (correct)
  • At most K sensors

    • What are crossings in terms of coverage maintenance?

  • Boundary points of the monitored area
  • Points where sensors meet (correct)
  • Areas with no sensor coverage
  • Physical barriers in the monitored space

    • What is the key observation made about area coverage in the text?

    <p>An area is completely covered if there are at least two disks that intersect and all crossings are covered (A)</p> Signup and view all the answers

    What is the relationship between coverage and connectivity in a sensor network, according to the text?

    <p>If the communication range is at least twice the sensing range, then coverage implies connectivity (D)</p> Signup and view all the answers

    How is a crossing defined to be covered?

    <p>If it is within the boundary of a sensor's coverage disk (D)</p> Signup and view all the answers

    What is the name of the distributed, localized algorithm proposed in the text for achieving optimal geographical density control?

    <p>Optimal Geographical Density Control (D)</p> Signup and view all the answers

    What does Strong Coverage imply in the context of Internet of Things?

    <p>Covering a region with multiple overlapping sensors (C)</p> Signup and view all the answers

    What are the two main types of point coverage discussed in the text?

    <p>Random and deterministic (A)</p> Signup and view all the answers

    What is the key difference between random and deterministic point coverage, as described in the text?

    <p>Random point coverage distributes sensors randomly, while deterministic point coverage does so in a deterministic manner (D)</p> Signup and view all the answers

    What is the key condition for a sensor network to be considered connected, according to the text?

    <p>Any active node must be able to communicate with any other active node (B)</p> Signup and view all the answers

    What is the primary concern when deploying static sensors for area coverage?

    <p>Determining the optimal sensor placement and density (B)</p> Signup and view all the answers

    If the transmission range of a sensor is twice its sensing range, what can be inferred?

    <p>Coverage implies connectivity (C)</p> Signup and view all the answers

    What is the primary goal of the coverage problem in wireless sensor networks?

    <p>Determining how well the sensing field is monitored or tracked (A)</p> Signup and view all the answers

    In the case of mobile sensors, what is the focus of the coverage problem?

    <p>Planning the trajectory of the mobile sensors (D)</p> Signup and view all the answers

    What is the relationship between sensing range ($r_s$) and transmission range ($r_t$) for most sensors?

    <p>$r_t \geq 2r_s$ (D)</p> Signup and view all the answers

    What is the primary distinction between the coverage problem for static and mobile sensors?

    <p>The deployment strategy (A)</p> Signup and view all the answers

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