Implementing and Operating Cisco Enterprise Network Core Technologies (ENCOR) — Question 667

An engineer measures the Wi-Fi coverage at a customer site The RSSI values are recorded as follows:

• Location A: -72 dBm
• Location B: -75 dBm
• Location C -65 dBm
• Location D -80 dBm

Which two statements does the engineer use to explain these values to the customer? (Choose two.)

Answer options

• A. The signal strength at location C is too weak to support web surfing
• B. Location D has the strongest RF signal strength
• C. The RF signal strength at location B is 50% weaker than location A
• D. The RF signal strength at location C is 10 times stronger than location B
• E. The signal strength at location B is 10 dB better than location C

Correct answer: C, D

Explanation

The correct answer is C and D because C accurately describes the comparative strength of the signals, noting that a difference of 3 dB implies a 50% reduction in signal strength. D is also correct, as a difference of 10 dB means that location C has a signal strength that is approximately 10 times greater than that of location B. The other options are inaccurate interpretations of the RSSI values.