2.3 Compare and contrast protocols for wireless networking.
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Questions and Answers

Which of the following technologies operates on a peer-to-peer basis?

  • Bluetooth
  • RFID
  • Wi-Fi
  • NFC (correct)

Which technology is commonly found in point-of-sale card readers and stickers?

  • Bluetooth
  • NFC
  • RFID (correct)
  • Wi-Fi

Which technology is typically wearable?

  • Wi-Fi
  • NFC
  • RFID
  • Bluetooth (correct)

Which technology is a variant of RFID?

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

Which technology has a range of up to 2 inches?

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

Which technology is commonly associated with the 2.4 GHz frequency?

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

Which technology uses both the 2.4 GHz and 5 GHz bands?

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

Which technology requires a dual-band adapter to work with 2.4 GHz?

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

Which technology can support clients on 2.4 GHz or legacy standards?

<p>Wi-Fi (A)</p> Signup and view all the answers

Which technology can support up to eight streams?

<p>Wi-Fi (A)</p> Signup and view all the answers

Which technology is used to configure a bridge between two networks?

<p>Long-range fixed wireless adapter (A)</p> Signup and view all the answers

What is the purpose of Global Positioning System (GPS)?

<p>Determining a device's latitude and longitude (D)</p> Signup and view all the answers

Which technology is a peer-to-peer version of RFID?

<p>Near-field communication (NFC) (A)</p> Signup and view all the answers

What is the purpose of an indoor positioning system (IPS)?

<p>Determining a device's location (D)</p> Signup and view all the answers

Which technology is used for digital payments?

<p>Near-field communication (NFC) (B)</p> Signup and view all the answers

What is the purpose of gain in antenna signals?

<p>To focus the signal in a single direction (C)</p> Signup and view all the answers

What is the purpose of effective isotropic radiated power (EIRP)?

<p>To boost the signal strength (C)</p> Signup and view all the answers

Which band allows legacy connections with WPA2-Personal security?

<p>2.4 GHz (B)</p> Signup and view all the answers

Which Wi-Fi standard is officially designated as Wi-Fi 4?

<p>802.11n (A)</p> Signup and view all the answers

What is the width of each channel in a 2.4 GHz network?

<p>5 MHz (A)</p> Signup and view all the answers

Which frequency band is used in unlicensed spectrum for long-range fixed wireless?

<p>Both 2.4 GHz and 5 GHz (D)</p> Signup and view all the answers

What is the width of each channel in a 2.4 GHz network?

<p>5 MHz (B)</p> Signup and view all the answers

How many non-overlapping channels are there in the 5 GHz band?

<p>23 (C)</p> Signup and view all the answers

Which frequency band must use DFS to prevent interference with radar/satellite signals?

<p>5 GHz (D)</p> Signup and view all the answers

Which frequency band has a higher chance of overlap/interference in separate networks?

<p>2.4 GHz (C)</p> Signup and view all the answers

Which Wi-Fi standard works in both the 2.4 GHz and 5 GHz bands?

<p>Wi-Fi 6 (C)</p> Signup and view all the answers

Which Wi-Fi standard works only at 5 GHz?

<p>Wi-Fi 5 (B)</p> Signup and view all the answers

Which frequency band has regulatory limits on power output constraining ranges of Wi-Fi devices?

<p>2.4 GHz (C)</p> Signup and view all the answers

Which frequency band is less effective at penetrating solid surfaces and does not support maximum ranges?

<p>5 GHz (A)</p> Signup and view all the answers

Which standard is officially designated as Wi-Fi 4 and works in the 2.4 GHz band?

<p>802.11n (B)</p> Signup and view all the answers

Flashcards

NFC

Near-Field Communication; a peer-to-peer technology operating at short distances.

RFID

Radio-Frequency Identification; a technology for identifying and tracking items using radio waves.

Bluetooth

A short-range wireless technology commonly used for wearable devices.

Wi-Fi

A wireless technology using 2.4 GHz and 5 GHz bands for networking.

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GPS

Global Positioning System; a satellite-based system for determining location.

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IPS

Indoor Positioning System; technology for determining location indoors.

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2.4 GHz

A frequency band commonly used for Wi-Fi and some wireless technologies.

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5 GHz

A frequency band used for Wi-Fi, offering more channels but less penetration.

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Channel width (2.4 GHz)

5 MHz; the bandwidth of a single communication channel in the 2.4 GHz band.

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Non-overlapping channels (5 GHz)

23; the number of non-overlapping channels available in the 5 GHz band.

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Wi-Fi 4

The official designation for the 802.11n standard, using 2.4 GHz band.

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Wi-Fi 5

The official designation for the 802.11ac standard, primarily operating at 5 GHz.

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Antenna Gain

A measure of an antenna's ability to focus a radio signal in a specific direction.

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EIRP

Effective Isotropic Radiated Power; a measure of the power of a radio transmitter, used to assess strength of a transmission.

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Dual-band adapter

A device that allows access to WiFi signals at both 2.4GHz and 5GHz frequencies.

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Long-range fixed wireless adapter

A device that creates a bridge between two networks.

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