Which is a wireless technology designed to replace cables for connecting compute

Question

Which is a wireless technology designed to replace cables for connecting computers to peripheral devices? It is limited to short distances, and uses a spread spectrum signal in the 24 GHz ISM band. A. Bluetooth (802.15.1) B. InfiniBand C. Token Ring (802.5) D. WiMAX (802.16) An 802.11 access point typically acts as a ____between 802.11 stations and an Ethernet distribution system, creating a single ____ A. bridge network (IP subnet) B. router/internet C. router/VLAN (IP subnet) D. switch/internet This transmission method is used in 802.11 WiFi LANs. In its original form, it transmits a microwave radio signal using rapid changes in frequency to avoid disturbing other transmissions using the same spectrum. A. broadband B. infrared C. narrowband D. spread spectrum The following are statements about orthogonal frequency division multiplexing (OFDM), as used with 802.11 WiFi networks. Which statement is FALSE? A. OFDM divides a channel into subcarriers. B. OFDM does not require guard bands between subcarriers. C. OFDM is highly susceptible to errors from multipath interference. D. The subcarrier being sampled is orthogonal to all other subcarriers.

Explanation / Answer

1) Bluetooth(802.15.1)(option A)

2) Act as router and creating internet(option B)

3) uses spread spectrum(option D)

4) it requires a guard band between subscribers( option B)

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