Question

question 21
a technician is setting up a wi - fi router in an office building. the graph shows how wireless signal strength changes with distance through different materials: air, concrete, and wood.
graph showing wireless signal strength vs distance for air, concrete, wood
based on the material identified in part a, what should the technician do to ensure the strongest wi - fi signal throughout the building?

• place the router near concrete walls
• place the router away from concrete walls in an open air area
• place the router directly on a wooden surface and in a closed air area.
• place the router anywhere, as all materials have the same effect.

Explanation:

To determine the best placement for the Wi - Fi router, we analyze the graph of signal strength vs. distance through different materials (air, concrete, wood). The graph shows that the signal strength decreases the least (or is strongest over distance) in air, and the most in concrete. So, to get the strongest signal throughout the building, the router should be placed in an area with the least signal attenuation. Placing it away from concrete walls (which attenuate the signal more) in an open air area (where signal attenuation is the least) will ensure the strongest signal.

• Option 1: Placing near concrete walls is bad as concrete attenuates the signal more.
• Option 3: Placing on a wooden surface and in a closed air area is not optimal as air (open) is better for signal and wood also attenuates more than air.
• Option 4: All materials do not have the same effect as seen from the graph.

Answer:

B. Place the router away from concrete walls in an open air area