The IEEE 802.11b standard operates using which of the following spread spectrum technologies?

Correct option is B

The 802.11b standard for Wi-Fi uses DSSS (Direct Sequence Spread Spectrum) as its primary spread spectrum technology. DSSS provides a higher data rate and greater resistance to interference, making it suitable for wireless LANs.
Important Key Points:
1. Direct Sequence Spread Spectrum (DSSS): Provides robust data transmission by spreading the signal over a wider bandwidth.
2. Interference Resistance: DSSS helps reduce interference, enhancing communication stability in Wi-Fi networks.
3. Standard for 802.11b: DSSS is specified for 802.11b to meet the requirements of wireless LANs.
Knowledge Booster:
· FHSS: Frequency Hopping Spread Spectrum, used in earlier wireless standards but not in 802.11b.
· IR (Infrared): Uses light for data transfer and is not part of the 802.11b standard.
· IR and DSSS: Combination not specified under 802.11b.
· FHSS and DSSS: 802.11b specifically uses DSSS, without incorporating FHSS in its standard.