Question
In wireless networking, what does the 802.11ac standard
primarily improve over 802.11n?Solution
The 802.11ac standard, often referred to as Wi-Fi 5, significantly increases the data transfer rates over its predecessor, 802.11n. It achieves this by using advanced modulation techniques (e.g., 256-QAM), wider channel bandwidths (up to 160 MHz), and multiple-input, multiple-output (MIMO) technology. These advancements support speeds exceeding 1 Gbps, making 802.11ac ideal for high-bandwidth applications like HD streaming and online gaming. ________________________________________ Why Other Options Are Incorrect? 1. Increased range: While 802.11ac may slightly improve range due to beamforming, this is not its primary enhancement. 2. Support for legacy devices: Both standards maintain compatibility, but this is not a specific improvement of 802.11ac. 3. Reduced interference: Not a direct focus of 802.11ac. 4. Improved battery efficiency: Benefits exist, but the main improvement is speed.
Statements: O > P ≥ S = V > N; O ≤ G < D; N < Y > C
Conclusions: I. G > V   II. C ≤ O
Statements: H @ B, B * E, V © E, W $ V
 Conclusions:     I.W $ E                 II.H @ E               �...
Statements:
B < C ≤ I = O; C ≥ J ≥ K ≥ N; Z ≤ M ≤ N
Conclusions:
I) O > Z
II) O = Z
...Which of the following symbols should replace the sign (*) and ($) respectively in the expression ' B ≥ T ≥ D = Q = S * V ≤ F $ H ' in order to ma...
In the question, assuming the given statements to be true, find which of the conclusion (s) among given two conclusions is /are definitely true and then...
In which of the following expressions will the expression ‘D < F’ does not hold true?
Statements: O > Q < R > P = U ≥ S > T ≥ N
Conclusion
I: S < R
II: U > N
Statement- 1 - 6# ≥ 9# ≥ 10# ≤ 5#
2 - 7* ≤ 10# ˃ 5* ≥ 6*
Conclusions:
1) 5# > 5*
2) 9# ˃ 6*
3) ...
In the question, assuming the given statements to be true, find which of the conclusion (s) among given two conclusions is /are definitely true and then...
Statements: Q ≤ P ≤ R < S, T = M > Q > V
Conclusions: Â Â Â Â
 I. T > VÂ
II. Â V < SÂ
III. Q < TÂ
...
