Wireless Networks: 802.11 Standards, Speed, and Interference Considerations. IT-FUNDAMENTALS-ITF-CERTIFICATION Practice Questions (Page 1)

Questions 1–5

1. 1foundation · easy

   Which 802.11 standard has a maximum theoretical data rate of up to 600 Mbps?

   • A802.11n
   • B802.11ac
   • C802.11ax
   • D802.11g
   Reveal Solution Discussion Select an answer first
2. 2application · medium

   A user is comparing two wireless routers. Router A supports 802.11n and Router B supports 802.11ac. Both routers are configured with identical settings and are placed in the same location. The user primarily uses a modern laptop that supports 802.11ac. Which statement about the maximum theoretical data rate the user's laptop could achieve is accurate?

   • AThe maximum theoretical data rate will be determined solely by the laptop's network adapter, not by the router.
   • BBoth routers will provide the same maximum theoretical data rate because the laptop supports 802.11ac and will negotiate the highest common standard.
   • CRouter A will provide a higher maximum theoretical data rate because 802.11n uses both 2.4 GHz and 5 GHz bands.
   • DRouter B will provide a higher maximum theoretical data rate because 802.11ac supports wider channels and more spatial streams than 802.11n.
   Reveal Solution Discussion Select an answer first
4. 3expert · medium

   A user reports that their 802.11ac laptop has a strong signal but slow throughput. The user is in a coffee shop with many other customers. The coffee shop has a single 802.11ac access point. Which factor is most likely causing the slow throughput?

   • AThe access point is too far away, causing a weak signal.
   • BThe laptop's Wi-Fi adapter is faulty.
   • CThe access point is not configured to use the maximum channel width.
   • DThe laptop is using the 2.4 GHz band, which is congested with other devices.
   Reveal Solution Discussion Select an answer first
5. 4application · medium

   An office has two wireless access points placed close together. Both are configured to use the same 2.4 GHz channel. Users report slow and unreliable connections. Which change would most likely improve the wireless performance?

   • AMove the access points closer together to improve signal strength.
   • BConfigure the access points to use different, non-overlapping channels.
   • CConfigure both access points to use the same SSID.
   • DIncrease the transmit power of both access points to maximum.
   Reveal Solution Discussion Select an answer first
6. 5foundation · easy

   Which of the following is a common source of wireless interference that can degrade Wi-Fi performance?

   • AMicrowave ovens operating at 60 GHz
   • BBluetooth devices operating in the 5 GHz band
   • CCordless phones operating in the 2.4 GHz band
   • DFluorescent lights emitting infrared radiation
   Reveal Solution Discussion Select an answer first