Frequency Bands JN0-452 Practice Questions (Page 1)

Questions 1–5

1. 1application · medium

   A warehouse deployment uses IoT sensors that only support 2.4 GHz. The sensors are spread across a large floor, and the APs are mounted high on the ceiling. The network engineer needs to ensure the sensors have reliable connectivity. Which characteristic of the 2.4 GHz band is most beneficial in this scenario?

   • AHigher frequency allows more efficient use of reflective surfaces for coverage.
   • BLonger wavelength provides better penetration and range through obstacles.
   • CWider channel bandwidth allows higher data rates for sensor traffic.
   • DMore non-overlapping channels reduce interference from neighboring APs.
   Reveal Solution Discussion Select an answer first
2. 2application · medium

   A company is deploying Wi-Fi 6E and wants to ensure that only Wi-Fi 6E devices use the 6 GHz band. What feature should be enabled to achieve this?

   • ADisable the 2.4 GHz and 5 GHz radios on the AP.
   • BRestrict the 6 GHz SSID to only allow WPA3 and require 802.11ax or newer.
   • CEnable band steering to push all devices to 6 GHz.
   • DUse a separate VLAN for 6 GHz traffic.
   Reveal Solution Discussion Select an answer first
4. 3foundation · easy

   Which client capability is required to use the 6 GHz band?

   • ASupport for 802.11ac (Wi-Fi 5)
   • BSupport for Wi-Fi 6E or later
   • CA dual-band radio
   • DA 5 GHz radio with DFS support
   Reveal Solution Discussion Select an answer first
5. 4foundation · easy

   Which statement best describes a typical use case for the 2.4 GHz band?

   • ADelivering the highest possible throughput for dense environments
   • BAvoiding interference from non-Wi-Fi devices
   • CProviding coverage over a large area with lower data rates
   • DSupporting only legacy 802.11b devices
   Reveal Solution Discussion Select an answer first
6. 5application · medium

   A retail store has a legacy barcode scanner that only supports 2.4 GHz. The store also has a guest Wi-Fi network for customers. The engineer notices that the barcode scanner frequently disconnects. What is a likely cause related to the 2.4 GHz band?

   • AInterference from other devices using the 2.4 GHz band, such as Bluetooth and microwaves.
   • BThe 2.4 GHz band has shorter range than 5 GHz, so the scanner is out of range.
   • CThe 2.4 GHz band has too many non-overlapping channels, causing channel overlap.
   • DThe 2.4 GHz band does not support data rates high enough for the scanner.
   Reveal Solution Discussion Select an answer first