What statement about 802.11 WLAN bridges is true?
A. WLAN bridges only work in the 2.4 GHz frequency band and they support only SISO communications
B. WLAN bridges must use a channel with acceptable SNR at both transceivers to maintain the desired data rate bi-directionally
C. WLAN bridges may support MIMO communications, but only if used in the 5 GHz frequency band
D. WLAN bridges must be implemented such that no interference occurs on the channel anywhere between the two endpoints used to establish the bridge
What is always required to establish a high quality 2.4 GHz RF link at a distance of 3 miles (5 kilometers)?
A. Grid antennas at each endpoint
B. A Fresnel Zone that is at least 60% clear of obstructions
C. A minimum antenna gain of 11 dBi at both endpoints
D. Minimum output power level of 2 watts
Which IEEE 802.11 physical layer (PHY) specification includes support for and compatibility with both ERP and HR/DSSS?
A. VHT (802.11ac)
B. OFDM (802.11a)
C. DSSS (802.11-Prime)
D. HT (802.11n)
A WLAN transmitter that emits a 50 mW signal is connected to a cable with 3 dB loss. If the cable is connected to an antenna with 9dBi gain, what is the EIRP at the antenna element?
A. 23 dBm
B. 26 dBm
C. 13 dBm
D. 10 dBm
In an 802.11 2.4 GHz system, what 22 MHz channels are considered non-overlapping?
A. 11 and 6
B. 7 and 11
C. 1 and 5
D. 2 and 8
Which one of the following is not a factor considered when calculating the Link Budget for an outdoor point-to-point WLAN bridge link?
A. MU-MIMO capabilities of the bridges
B. Receive antenna gain
C. Transmit power
D. Operating frequency
You are configuring an access point to use channel 128. What important fact should be considered about this channels?
A. It is a 22 MHz channel so it will overlap with the channels above and below it
B. It is a 2.4 GHz frequency band 40 MHz channel, so it should not be used
C. It is a channel that is unsupported by most access points
D. It is a channel that likely requires DFS when used
You are evaluating a connection that states the data rate is 150 Mbps. What is the expected throughput of this connection?
A. Less than 150 Mbps because of 802.11 overhead and contention
B. 54 Mbps because that is the actual maximum throughput of an 802.11 connection
C. More than 150 Mbps because of compression
D. 150 Mbps because the data rate is equal to the throughput
In a mesh BSS (MBSS), according to the 802.11-2016 standard, what device connect the mesh to an Ethernet network?
A. Mesh Gate
B. Mesh Switch
C. Mesh Router
D. Mesh Portal
To ease user complexity, your company has implemented a single SSID for all employees. However, the network administrator needs a way to control the network resources that can be accessed by each employee based in their department.
A. RBAC
B. SNMP
C. WIPS
D. WPA2
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