220-1201 Practice Question: A network administrator is deploying a new…

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

• ✗

  Install multiple thick access points with overlapping channels.

  Why it's wrong here

  Thick (autonomous) access points operate independently, lacking centralized coordination for client roaming and channel management. Installing them with overlapping channels in the same coverage area will inevitably lead to co-channel interference, degrading signal quality and throughput for all connected devices. This setup would cause frequent disconnections and poor performance as users move between areas, rather than providing seamless connectivity.

• ✗

  Use a single high-power access point in the center of the building.

  Why it's wrong here

  A single high-power access point, even centrally located, is insufficient to provide adequate wireless coverage throughout a building with multiple floors, especially when structural elements like concrete floors and metal studs cause significant signal attenuation. While the AP might transmit a strong signal, client devices often lack the power to transmit back effectively, leading to an asymmetrical link and poor connectivity for users on different floors or distant areas. This approach results in numerous dead zones and unreliable service.

• ✓

  Deploy thin access points connected to a wireless LAN controller.

  Why this is correct

  Deploying thin access points (APs) managed by a centralized Wireless LAN Controller (WLC) is the optimal solution for large-scale wireless deployments requiring seamless mobility. The WLC intelligently manages all APs, coordinating client roaming between them, performing dynamic channel assignment to minimize interference, and balancing client loads across available APs. This architecture ensures consistent signal quality, robust security policies, and uninterrupted connectivity as users move throughout the building.

• ✗

  Use mesh access points with wireless backhaul.

  Why it's wrong here

  While mesh access points can extend coverage in certain scenarios, relying on wireless backhaul through structural obstacles like concrete and metal studs is highly inefficient and detrimental to network performance. Wireless backhaul in such environments experiences significant signal degradation, leading to high latency, reduced throughput, and unreliable connectivity for clients. For a robust and seamless roaming experience, a wired backhaul connection for each AP is always preferred over a wireless mesh, especially in complex building layouts.