NB-IoT Devices and Indoor Placement Quiz
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Questions and Answers

In which standard is NB-IoT introduced?

  • HaLow
  • LTE-Advanced Pro (correct)
  • 802.11ah
  • Wi-Fi

    • What is the main role of a 'Central' device in BLE networks?

  • Operates in the 2.4 GHz frequency band
  • Performs device discovery and connection establishment (correct)
  • Acts as a relay between nodes
  • Sends data at the maximum data rate

    • How many subcarriers can be supported with a 1000kHz bandwidth for 4G cellular operation?

  • 950
  • 975 (correct)
  • 900
  • 1000

    • What is included in the beacon to notify stations about buffered frames?

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

    Which version of Bluetooth introduced BLE technology?

    <p>Bluetooth 4.0</p> Signup and view all the answers

    Which parameter is used to decide the modulation and coding scheme?

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

    What distinguishes BLE from Classic Bluetooth?

    <p>Lower energy consumption</p> Signup and view all the answers

    What is a characteristic specific to BLE 'Advertising' mode?

    <p>Device discovery and connection establishment</p> Signup and view all the answers

    What frames are transmitted by the Access Point during a node's attempt to join a Basic Service Set using active scanning?

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

    How many overlapping WiFi channels are available in the 2.4GHz Band?

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

    Which statement is true about Zigbee routers in a Zigbee network?

    <p>Connect multiple nodes and act as relays</p> Signup and view all the answers

    Which of the following is not a feature of Zigbee technology?

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

    What does the term 'link budget' refer to in the context of LoRa technology?

    <p>The amount of loss that can be tolerated in the data link to ensure proper operation</p> Signup and view all the answers

    Which of the following aspects does the spreading factor in LoRa technology affect?

    <p>Data rate and range</p> Signup and view all the answers

    At which OSI layer does the LoRaWAN modulation technique operate?

    <p>Data link layer</p> Signup and view all the answers

    What does the acronym 'REST' stand for in the context of web services?

    <p>Representational State Transfer</p> Signup and view all the answers

    In RESTful APIs, what is used to uniquely identify a resource?

    <p>URI (Uniform Resource Identifier)</p> Signup and view all the answers

    Which HTTP method should be used to update an existing resource in a RESTful web service?

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

    Which statement is correct regarding NB-IoT devices' suitability for indoor placement?

    <p>Statement B</p> Signup and view all the answers

    In the context of NB-IoT, why is it essential for devices to connect to an operator network?

    <p>To ensure secure data transmission</p> Signup and view all the answers

    What distinguishes NB-IoT devices from normal LTE devices regarding paging?

    <p>NB-IoT devices need not listen to paging regularly</p> Signup and view all the answers

    Is it true that any mobile connected to a 4G network can move while retaining an active connection?

    <p>Yes, as long as it stays within the coverage area</p> Signup and view all the answers

    In the context of link budget and receiver sensitivity, what is the minimum transmit power required for NB-IoT with a link budget of 170dB and receiver sensitivity of -150dBm?

    <p>-20 dBm</p> Signup and view all the answers

    Regarding the spectrum in which NB-IoT devices transmit information, which statement is correct?

    <p>The spectrum is irrelevant if the eNodeB is unaware</p> Signup and view all the answers

    In a LoRaWAN network, what is the primary function of the network server?

    <p>Processing and forwarding data to application servers</p> Signup and view all the answers

    What is the effect of increasing the spreading factor (SF) in LoRa modulation?

    <p>Increases range and decreases data rate</p> Signup and view all the answers

    Which LoRaWAN class is designed for bidirectional end devices with scheduled receive slots?

    <p>Class B</p> Signup and view all the answers

    What is the primary advantage of using LoRa for IoT applications?

    <p>Low power consumption and long range</p> Signup and view all the answers

    Which OSI layer does the LoRa modulation technique operate at?

    <p>Physical layer</p> Signup and view all the answers

    What is the main drawback of using LoRa for IoT applications?

    <p>Limited data rate</p> Signup and view all the answers

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