802.11 Technology Fundamentals (10%)

350-101 · 30 questions

• A government procurement requires access points to carry the WPA3 certification mark. Which body issues that mark?
• A retailer is opening stores in another country and must choose legal channels and radiated power for the access points there. Which body sets those limits for that country?
• A SaaS wireless team is asked who wrote the 802.11ax amendment that their Wi-Fi 6 access points implement. Which body wrote that amendment?
• A retailer sets each radio to the highest conducted power its country allows, then adds a high-gain antenna and ignores cable loss. Which limit can that combination break?
• In a university hall, many laptops send small frames at once and airtime collapses while each transmission still serves only one station. The access points are Wi-Fi 6. Which mechanism serves several stations in one transmission by dividing the channel?
• A retail chain in North America is choosing a 2.4 GHz channel plan so neighboring access points do not overlap on 20 MHz channels. Which set meets that goal?
• A stadium access point sends traffic to several phones in one downlink transmission, separating them by their location in space rather than by slicing the channel into smaller frequency units. Which feature is that?
• A university design requires a laptop to use two bands at the same time to one access point, as a single multi-link device. Which generation adds that operation?
• A hospital access point on a 5 GHz channel suddenly changes channel, and the log says radar was detected. Clients rejoin on the new channel. What happened?
• After a neighbor access point comes up on the same channel, the campus controller moves an access point to a cleaner channel with no operator typing a channel. Which RRM behavior is that?
• A campus deploys many access points under one SSID so laptops can roam between them. There is no laptop-to-laptop ad hoc network. Which topology is this?
• A university sets every access point in a dense lecture hall to 160 MHz channels. Retries rise and per-client throughput falls, even though each channel is wider. Why?
• Laptops next to a lecture-hall access point use a denser constellation, and laptops at the back of the hall fall to a simpler one. SNR is high in front and poor at the back. Why does the back of the hall drop?
• A student phone sends a probe request for the campus SSID before it associates. Which kind of frame is that probe request?
• A capture shows a client data frame and no acknowledgement after it. The client retries the data. What is the missing acknowledgement?
• A small office sets its only 2.4 GHz WLAN to a 40 MHz channel. A second access point has no non-overlapping 2.4 GHz channel left. Why?
• A university capture of a staff WLAN shows high-efficiency operation on the access points. Which standard defines that PHY?
• A retailer copies the 2.4 GHz transmit settings onto new 6 GHz radios in the same country and assumes the copy is legal. What is wrong with that assumption?
• Three access points advertise the same SSID and clients roam among them. There is no controller. A design note calls this an independent basic service set. What is it actually?
• A warehouse puts every access point on 2.4 GHz only, and capable laptops and the old scanners all share it. Airtime is exhausted. What change helps the laptops without taking the scanners off the air?
• A vendor worksheet lists a channel for a store, and that channel is not allowed by the country's regulator. The controller is set to that country. What decides whether the radio may use the channel?
• Dynamic channel assignment is turned off. A new access point joins and stays on a channel that overlaps its neighbor. Why was it not moved?
• Transmit power control is turned off. A new access point stays at maximum power, and nearby clients cling to it instead of roaming. Why was the power not reduced?
• A retailer slide says the new phones are Wi-Fi 6E. Which organization is responsible for that generation name?
• A lecture hall access point transmits to several laptops at the same time, each on its own spatial stream. Which feature is that?
• After a laptop associates, it moves a file. Which frame carries that file's payload?
• An access point advertises a clinic SSID about ten times a second with a beacon. What kind of frame is that beacon?
• Two outdoor radios link two buildings. Each is in bridge mode, and no client associates to them. A note calls the link an extended service set. What is it?
• A phone box says Wi-Fi 7. Which organization published that generation name?
• A store slide says the new WLAN is Wi-Fi 6E, so an engineer enables it on access points that have only 2.4 and 5 GHz radios. The 6 GHz SSID never appears. What did the slide assume these radios have?