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 (B)</p> Signup and view all the answers

Which version of Bluetooth introduced BLE technology?

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

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

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

What distinguishes BLE from Classic Bluetooth?

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

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

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

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

<p>11 (D)</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 (D)</p> Signup and view all the answers

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

<p>'Large Bandwidth' (B)</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 (C)</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 (A)</p> Signup and view all the answers

At which OSI layer does the LoRaWAN modulation technique operate?

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

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

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

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

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

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

<p>Statement B (A)</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 (D)</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 (B)</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 (C)</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 (B)</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 (C)</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 (A)</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 (C)</p> Signup and view all the answers

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

<p>Class B (C)</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 (A)</p> Signup and view all the answers

Which OSI layer does the LoRa modulation technique operate at?

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

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

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

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