Designing Cisco Enterprise Wireless Networks (ENWLSD) — Question 179

An IT administrator is trying to establish the criteria for a predictive coverage design. The environment is a mix of 802.11g data and voice. Which minimum coverage with SNR 25 aligns with Cisco best practice?

Answer options

• A. RSSI of -75dBm. 20 to 25% intercell overlap
• B. RSSI of -80dBm. 10% intercell overlap
• C. RSSI of -72dBm. 11% intercell overlap
• D. RSSI of -67dBm. 15 to 20% intercell overlap

Correct answer: D

Explanation

The correct answer, D, specifies an RSSI of -67dBm with a 15 to 20% intercell overlap, which supports optimal coverage and performance for both data and voice in a mixed 802.11g environment. Options A and C provide insufficient RSSI levels, while option B's overlap is too low, making them less suitable for meeting Cisco's best practices.