Wireless Networking Protocols Comparison

Compare the frequency ranges used by Bluetooth and Wi-Fi (802.11) technologies. Which of the following statements is true?

• Bluetooth typically operates in the 2.4 GHz band, while Wi-Fi can operate in both 2.4 GHz and 5 GHz bands.

• Bluetooth operates in the 5 GHz band, while Wi-Fi operates only in the 2.4 GHz band.

• Both Bluetooth and Wi-Fi operate exclusively in the 5 GHz band.

• Bluetooth operates in the 900 MHz band, while Wi-Fi operates in the 2.4 GHz band.

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DOK Level 3: Strategic Thinking

Analyze the differences in range and data transfer speed between NFC and Bluetooth. Which statement accurately reflects these differences?

• NFC has a longer range and faster data transfer speed than Bluetooth.

• NFC has a shorter range but faster data transfer speed than Bluetooth.

• NFC has a shorter range and slower data transfer speed than Bluetooth.

• NFC has a longer range but slower data transfer speed than Bluetooth.

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DOK Level 3: Strategic Thinking

Evaluate the suitability of using Long-range fixed wireless technology for rural internet access compared to 802.11 Wi-Fi. Which of the following is a valid conclusion?

• Long-range fixed wireless is less suitable due to its limited range compared to 802.11 Wi-Fi.

• Long-range fixed wireless is more suitable due to its ability to cover larger distances than 802.11 Wi-Fi.

• Both technologies are equally suitable for rural internet access.

• 802.11 Wi-Fi is more suitable due to its higher data transfer speeds over long distances.

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DOK Level 3: Strategic Thinking

Consider the use of Radio-frequency identification (RFID) in inventory management. What is a strategic advantage of using RFID over traditional barcoding systems?

• RFID requires line-of-sight to read tags, making it more accurate.

• RFID can read multiple tags simultaneously without line-of-sight, increasing efficiency.

• RFID is cheaper to implement than barcoding systems.

• RFID tags are disposable and single-use, reducing costs.

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DOK Level 3: Strategic Thinking

Plan a wireless network for a large office building. Which combination of technologies would provide the best coverage and connectivity?

• Use only Bluetooth for all wireless communications.

• Use NFC for all data transfer needs.

• Combine 802.11 Wi-Fi for general internet access and Bluetooth for device-to-device communication.

• Use Long-range fixed wireless for all internal communications.

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DOK Level 3: Strategic Thinking

Assess the impact of channel selection on the performance of a Wi-Fi network operating on the 2.4 GHz band. Which strategy is most effective?

• Use overlapping channels to maximize coverage.

• Use non-overlapping channels to minimize interference.

• Use the same channel for all access points to ensure consistency.

• Randomly select channels to avoid predictability.

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DOK Level 3: Strategic Thinking

Strategize the deployment of a Bluetooth network in a smart home environment. What is a key consideration to ensure optimal performance?

• Ensure all devices are within 100 meters of each other.

• Minimize the number of devices to reduce interference.

• Use Bluetooth Low Energy (BLE) for devices that require constant connectivity.

• Use Bluetooth Classic for all devices to ensure compatibility.

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DOK Level 3: Strategic Thinking

Evaluate the security implications of using NFC for mobile payments. Which of the following is a valid concern?

• NFC transactions are easily intercepted due to their long range.

• NFC lacks encryption, making transactions insecure.

• NFC requires close proximity, reducing the risk of interception but still vulnerable to eavesdropping.

• NFC is inherently secure and has no vulnerabilities.

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DOK Level 3: Strategic Thinking

Analyze the role of frequency hopping in Bluetooth technology. How does it enhance communication?

• Frequency hopping increases the data transfer rate by using multiple frequencies simultaneously.

• Frequency hopping reduces interference by rapidly switching frequencies during transmission.

• Frequency hopping allows Bluetooth to operate on the 5 GHz band.

• Frequency hopping is used to extend the range of Bluetooth devices.

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DOK Level 3: Strategic Thinking

Consider the deployment of a wireless network in a densely populated urban area. Which technology would be most effective in minimizing interference and maximizing performance?

• Use 802.11 Wi-Fi on the 2.4 GHz band exclusively.

• Use 802.11 Wi-Fi on the 5 GHz band to reduce interference.

• Use Bluetooth for all communications to avoid Wi-Fi congestion.

• Use NFC for all data transfers to minimize interference.

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DOK Level 3: Strategic Thinking