The IEEE 802.11n standard provides 40-MHz channels, improved MAC efficiency, and MIMO.
Which three elements define the 802.11n implementation of MIMO? (Choose three.)
A.
channel bonding
B.
dynamic frequency selection
C.
maximal ratio combining
D.
packet aggregation
E.
spatial multiplexing
F.
transmit beam forming
maximal ratio comibining – the signals from each channel are added together,
Spatial multiplexing (seen abbreviated SM or SMX) is a transmission technique in MIMO wireless communication to transmit independent and separately encoded data signals, so-called streams, from each of the multiple transmit antennas. Therefore, the space dimension is reused, or multiplexed, more than one time.
If the transmitter is equipped with antennas and the receiver has antennas, the maximum spatial multiplexing order (the number of streams) is,
beamforming allows an access point to effectively concentrate its signal at the clients location. This results in a better signal, SNR and potentially a great throughput.To perform spatial division multiplexing ( SDM ) you need to send different spatial streams to the client. For transmit beamforming you are sending the SAME spatial stream to the client so if you are a 2X2:2
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Is this dump current?
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I did my exam 1 month ago, passed with 992/1000 all the questions came from this list, must have missed 1 🙂
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Maarteen, thank you so much for your response. Don’t know if you’ve already taken the CCNP or not, but I just took it a few days ago. The dump from this site is obsolete for that exam. Memorized every single question, but didn’t see a single one of them on my actual exam.
Hope that helps out a little of you’re pursuing that cert.
Thanks again, and have a great one 🙂
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This dump is useless. Only saw 5 out of the 226 questions on my exam.
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They added a bunch of questions to this one and NA Security at least. Most of these questions are still valid from what I’ve heard, you just must have received a majority of the new ones.
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