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Difficulty: EasyWired and Wireless Network Issues

A user in a corporate office reports that a laptop loses its wireless network connection whenever it is moved inside a newly constructed conference room featuring thick, reinforced glass walls. Diagnostic checks reveal that the wireless network adapter maintains a valid IP address prior to entering the room, but the signal strength drops drastically once inside. Which of the following is the MOST likely cause of this connection issue?

  1. Wireless signal attenuation caused by physical solid barriersAnswer
  2. B
    The DHCP server failing to lease a valid IP address to the client device
  3. C
    Co-channel interference caused by selecting overlapping 2.4 GHz channels
  4. D
    An unmanaged Layer 2 switch blocking wireless traffic across subnets

Answer

Wireless signal attenuation caused by physical solid barriers is the most likely cause of the connection drop.
Wireless signal attenuation occurs when radio signals pass through dense physical objects such as glass, metal, tile, or solid masonry. The reinforced glass walls absorb and reflect the Wi-Fi signal, causing a severe drop in RSSI (Received Signal Strength Indicator) and resulting in dropped connections inside the room.

Step-by-Step Solution

1
Analyze the environment and reported symptom.
The user experiences wireless connection drops specifically when entering a room bounded by heavy reinforced glass walls.
Environmental factors and building materials strongly influence radio frequency (RF) signal propagation.
2
Evaluate network configuration and diagnostic findings.
The device receives a valid IP address from DHCP, ruling out protocol-level or IP assignment failures.
Successful IP configuration confirms Layer 3 network settings and server responsiveness are functional.
3
Identify the physical cause of RF signal loss.
Reinforced glass and solid structures act as obstacles that block or weaken RF signals, causing attenuation.
Attenuation reduces signal strength (RSSI), leading to packet loss and disconnected wireless sessions.

Key Concept

Wireless Signal Attenuation and Environmental Obstacles
Estimated Time:1m 0s
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Topics

Wired and Wireless Network Issues

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