H12-311_V3.0 · Question #257
Which of the following options are the points of difference between the 802.11b/g protocols? (Multiple choice)
The correct answer is A. Different throughput capabilities B. The technologies used by the two protocols are different C. Different data rates supported. 802.11b and 802.11g differ in throughput (A), underlying technology (B), and supported data rates (C): 802.11b maxes out at 11 Mbps using DSSS (Direct Sequence Spread Spectrum), while 802.11g reaches 54 Mbps using OFDM (Orthogonal Frequency Division Multiplexing) - a…
Question
Which of the following options are the points of difference between the 802.11b/g protocols? (Multiple choice)
Options
- ADifferent throughput capabilities
- BThe technologies used by the two protocols are different
- CDifferent data rates supported
- DThe working frequency band is different
How the community answered
(42 responses)- A83% (35)
- D17% (7)
Explanation
802.11b and 802.11g differ in throughput (A), underlying technology (B), and supported data rates (C): 802.11b maxes out at 11 Mbps using DSSS (Direct Sequence Spread Spectrum), while 802.11g reaches 54 Mbps using OFDM (Orthogonal Frequency Division Multiplexing) - a fundamentally different modulation technology that enables higher speeds and supports a wider range of intermediate data rates.
D is wrong because both 802.11b and 802.11g operate on the same 2.4 GHz frequency band - this is actually what makes g backward-compatible with b. The frequency-band distinction applies to 802.11a (5 GHz) vs. 802.11b/g (2.4 GHz), not between b and g themselves.
Memory tip: Think "b and g are band buddies" - they share the 2.4 GHz band, so D is never a difference between them. What separates them is everything above the physical frequency: the modulation tech (DSSS vs. OFDM), the speeds it enables, and the rate sets each protocol supports.
Topics
Community Discussion
No community discussion yet for this question.