CWNA-108 - Certified Wireless Network Administrator

 What you should tell him is that due to 802.11 network operations and the dynamic rates used by devices on the network, the two radios will likely not exceed the 1 Gbps Ethernet link. This is because the actual throughput of an 802.11 network is much lower than the theoretical data rates due to factors such as overhead, contention, interference, retransmissions, and environmental conditions. Moreover, the data rates used by devices on the network vary depending on their distance, signal quality, capabilities, and configuration. Therefore, it is unlikely that both radios of the AP will simultaneously use the maximum data rates and saturate the 1 Gbps Ethernet link. Upgrading to a 10 Gbps Ethernet link or running a second 1 Gbps Ethernet link may be unnecessary and costly. Compressing all data before transmitting it onto the Ethernet link may introduce additional overhead and latency. References: [CWNP Certified Wireless Network Administrator Official Study Guide: Exam CWNA-107], page 227; [CWNA: Certified Wireless Network Administrator Official Study Guide: Exam CWNA-106], page 217.

The distance at which an RF signal can be effectively received depends on several factors, such as the transmitting station’s output power, the free space path loss, the receiving station’s radio sensitivity, and the environmental noise and interference. However, the receiving station’s output power does not influence this distance, because it only affects how well the receiving station can transmit signals back to the transmitting station. The output power of the receiving station is irrelevant for receiving signals from the transmitting station12. References: CWNA-109 Study Guide, Chapter 2: Radio Frequency Fundamentals, page 79; CWNA-108 Study Guide, Chapter 2: Radio Frequency Fundamentals, page 74.

The final step in an effective troubleshooting process is to document the results. Documentation is essential for keeping track of the problem history, the actions taken, the solutions implemented, and the outcomes achieved. Documentation can also help to prevent future problems, improve best practices, and provide feedback for improvement. Documentation should include relevant information such as problem description, symptoms, root cause analysis, resolution steps, verification methods, and lessons learned. References: [CWNP Certified Wireless Network Administrator Official Study Guide: Exam CWNA-107], page 513; [CWNA: Certified Wireless Network Administrator Official Study Guide: Exam CWNA-106], page 483.