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?

NFC (A) Signup and view all the answers

Which technology has a range of up to 2 inches?

NFC (D) Signup and view all the answers

Which technology is commonly associated with the 2.4 GHz frequency?

Bluetooth (C) Signup and view all the answers

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

Wi-Fi (B) Signup and view all the answers

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

RFID (C) Signup and view all the answers

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

Wi-Fi (A) Signup and view all the answers

Which technology can support up to eight streams?

Wi-Fi (A) Signup and view all the answers

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

Long-range fixed wireless adapter (A) Signup and view all the answers

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

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

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

Near-field communication (NFC) (A) Signup and view all the answers

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

Determining a device's location (D) Signup and view all the answers

Which technology is used for digital payments?

Near-field communication (NFC) (B) Signup and view all the answers

What is the purpose of gain in antenna signals?

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

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

To boost the signal strength (C) Signup and view all the answers

Which band allows legacy connections with WPA2-Personal security?

2.4 GHz (B) Signup and view all the answers

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

802.11n (A) Signup and view all the answers

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

5 MHz (A) Signup and view all the answers

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

Both 2.4 GHz and 5 GHz (D) Signup and view all the answers

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

5 MHz (B) Signup and view all the answers

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

23 (C) Signup and view all the answers

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

5 GHz (D) Signup and view all the answers

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

2.4 GHz (C) Signup and view all the answers

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

Wi-Fi 6 (C) Signup and view all the answers

Which Wi-Fi standard works only at 5 GHz?

Wi-Fi 5 (B) Signup and view all the answers

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

2.4 GHz (C) Signup and view all the answers

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

5 GHz (A) Signup and view all the answers

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

802.11n (B) 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.