IoT Communication Layer Quiz
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Questions and Answers

What technology uses 2.4Ghz frequency?

  • SigFox
  • Weightless
  • LoRa
  • ZigBee (correct)

    • What is the operating frequency of HaLow?

  • Sub-1 Ghz (correct)
  • 5 Ghz
  • 900 Hz
  • 2.4 Ghz

    • What is the main advantage of HaLow over traditional Wi-Fi technologies?

  • Lower power consumption (correct)
  • Greater range
  • Faster speeds
  • Better security

    • How does HaLow address the shortage of Duration/ID field needed for Network Allocation Vector?

    <p>HaLow uses the Association ID for determining the length of the frame</p> Signup and view all the answers

    Which channel access technique is used in HaLow?

    <p>Carrier Sense Multiple Access with Collision Avoidance</p> Signup and view all the answers

    Which of the following helps to solve the hidden node problem in 802.11 networks?

    <p>All of the above</p> Signup and view all the answers

    Which parameter determines the modulation and coding scheme used in wireless communication?

    <p>Signal to Noise Ratio</p> Signup and view all the answers

    When a node attempts to join a Basic Service Set using passive scanning, which frame(s) does it transmit?

    <p>Both B and C</p> Signup and view all the answers

    Which 802.11 standard does WiFi HaLow follow?

    <p>802.11ah</p> Signup and view all the answers

    What is another name for WiFi HaLow?

    <p>802.11ah</p> Signup and view all the answers

    Which of the following standards are typically common across IEEE 802?

    <p>All of the above</p> Signup and view all the answers

    Which of the following IoT layers focuses on Collaboration & Processes?

    <p>Data Accumulation</p> Signup and view all the answers

    Which wireless technology supports the longest range in IoT?

    <p>LoRa</p> Signup and view all the answers

    What do devices in IoT primarily support?

    <p>All of them</p> Signup and view all the answers

    Which of the following best describes IoT?

    <p>An ecosystem of devices, accessible through internet</p> Signup and view all the answers

    Which of the following is NOT typically a component in an IoT device?

    <p>Communication</p> Signup and view all the answers

    What allows heterogeneous systems to communicate and interact in IoT?

    <p>Middleware</p> Signup and view all the answers

    Which of the following statements is true?

    <p>Statement A is true, but Statement B is false.</p> Signup and view all the answers

    What is the typical range of HaLow compared to traditional Wi-Fi?

    <p>Longer range</p> Signup and view all the answers

    How many overlapping WiFi channels are there for 2.4Ghz Band?

    <p>11</p> Signup and view all the answers

    Which of the following is included in the beacon to notify stations about the buffered frames?

    <p>Traffic Indication Map</p> Signup and view all the answers

    What is the operating frequency of Z-Wave?

    <p>868 MHz</p> Signup and view all the answers

    Is Z-Wave an implementation of the ZigBee protocol?

    <p>False</p> Signup and view all the answers

    Which of the following is required for a product to be considered "ZigBee Compliant"?

    <p>ZigBee Stack</p> Signup and view all the answers

    Which device in a ZigBee network does not contribute to routing?

    <p>ZigBee End Device</p> Signup and view all the answers

    Which of the following is NOT a primary purpose of ZigBee communication?

    <p>Large Bandwidth Applications</p> Signup and view all the answers

    Does ZigBee have a transport layer?

    <p>False</p> Signup and view all the answers

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