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When a WLAN controller transmits an Ethernet frame that has an IEEE 802.11 frame as its payload to a lightweight AP, what type of QoS marks can be applied to the Ethernet frame and/or its payload? (Choose 3)

A. IEEE 802.1Q PCP marks in the Ethernet frame header

B. User Priority marks in the IEEE 802.11 frame header

C. Throughput subscription marks in the Ethernet frame header

D. MPLS tags from the Label Edge Router (LER)

E. DSCP marks to the ToS bits in the encapsulating IP packet header

F. RSVP tag if RTP is the payload of the IEEE 802.11 frame

The exhibit illustrates the azimuth and elevation for what type of antenna?

A. Omni-directional

B. 20 degree vertical yagi

C. 120 degree horizontal sector

D. 60 degree horizontal patch

E. 10 degree vertical grid

Given: You are evaluating the theoretical and real-world RF gain benefits of transmit and receive features introduced by 802.11n with MIMO. This exercise allows you to quantify the feature's value in a real-world environment.

What is the maximum theoretical signal gain of chip-based TxBF and MRC (as features) when compared to the same AP using only a single antenna for transmit and receive (effectively simulating a 1x1 chip)?

A. 2 Rx or Tx chains = 3 dBi gain 3 Rx or Tx chains = approx 5 dBi gain 4 Rx or Tx chains = 6 dBi gain

B. 2 Rx or Tx chains = 1 dBi gain 3 Rx or Tx chains = 2 dBi gain 4 Rx or Tx chains = 3 dBi gain

C. 2 Rx or Tx chains = 3 dBi gain 3 Rx or Tx chains = 6 dBi gain 4 Rx or Tx chains = 9 dBi gain

D. 2 Rx or Tx chains = approx 4-6.5 dBi gain 3 Rx or Tx chains = approx 7-10 dBi gain 4 Rx or Tx chains = approx 10-12 dBi gain

E. The theoretical gains offered by each additional radio are different for TxBF and MRC.

Assume that your network operates in a regulatory domain that allows use of UNII-1, UNII-2, UNII- 2e, UNII-3, and the 5.8 GHz ISM band for indoor Wi-Fi. In your upcoming 802.11n deployment, you would like to take advantage of the performance improvements that result from channel bonding. However, after extensive testing, you have determined that your mission-critical WLAN should not use channels requiring DFS support.

Given those two criteria (enable channel bonding and disable DFS channels), in the 5 GHz spectrum, how many non-overlapping channels will your system be able to use?

A. 2

B. 3

C. 4

D. 6

E. 11

Assuming an identical RF environment,

which one of these scenarios is most likely to lead to a client-to-AP link imbalance in which one- way communication results?

A. Option A

B. Option B

C. Option C

D. Option D