N10-005 · Question #380
A technician can increase the bandwidth of an 802.11n cell by:
The correct answer is A. doubling the channel width. 802.11n introduced channel bonding, which allows two adjacent 20MHz channels to be combined into a single 40MHz channel. Doubling the channel width from 20MHz to 40MHz effectively doubles the available bandwidth. Enabling diversity (B) uses multiple antennas to reduce signal…
Question
A technician can increase the bandwidth of an 802.11n cell by:
Options
- Adoubling the channel width.
- Benabling diversity.
- Cdisabling MIMO.
- Dadding a second access point.
How the community answered
(44 responses)- A75% (33)
- B5% (2)
- C14% (6)
- D7% (3)
Explanation
802.11n introduced channel bonding, which allows two adjacent 20MHz channels to be combined into a single 40MHz channel. Doubling the channel width from 20MHz to 40MHz effectively doubles the available bandwidth. Enabling diversity (B) uses multiple antennas to reduce signal fading but does not increase bandwidth. Disabling MIMO (C) would reduce throughput, as MIMO (Multiple Input Multiple Output) is a key 802.11n feature that increases data rates. Adding a second access point (D) adds capacity to the network as a whole but does not increase the bandwidth of an individual cell.
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