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When using a spectrum analyzer to look for non-Wi-Fi interference sources, you notice significant interference across the entire 2.4 GHz band (not on a few select frequencies) within the desktop area of a user's workspace, but the interference disappears quickly after just 2 meters. What is the most likely cause of this interference?
Answer: A
You recently purchased four laptops containing dual-band 802.11ac adapters. The laptops can connect to your 2.4 GHz network, but they cannot connect to the 5 GHz network. The laptops do not show the 5 GHz SSIDs, which are different than the 2.4 GHz SSIDs. Existing devices can connect to the 5 GHz SSIDs with no difficulty. What is the likely problem?
Answer: A
Return Loss is the decrease of forward energy in a system when some of the power is being reflected back toward the transmitter. What will cause high return loss in an RF transmission system, including the radio, cables, connectors and antenna?
Answer: B
The IEEE 802.11 standard requires VHT capable devices to be backward compatible with devices using which other 802.11 physical layer specification (PHY)?
Answer: C
In which plane of the three commonly defined networking planes is an access point configured by a WLAN controller?
Answer: B
Your consulting firm has recently been hired to complete a site survey for a company desiring an indoor coverage WLAN. Your engineers use predictive design software for the task, but the company insists on a pre-design site visit. What task should be performed as part of the pre-design visit to prepare for a predictive design?
Answer: C
You are attempting to explain RF shadow and how it can cause lack of coverage. What common building item frequently causes RF shadow and must be accounted for in coverage plans?
Answer: A
Which unit of measurement, as formally defined, is an absolute unit that is used to quantify received signal power levels on a logarithmic scale?
Answer: C
What fact is true regarding controllers and APs in a split-MAC architecture?
Answer: B
What feature of 802.11ax (HE) is managed with beacon and trigger frames and is primarily a power management method, but also provides more efficient access to the channel used within a BSS?
Answer: B
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