Cambium Test Cambium Performance Tracking 3

Question 1

What Cambium tool provides SNMP-based polling for real-time performance data collection from PMP APs?

Accepted Answer

Cambium Wireless Manager (CWM)

Answer

Cambium Wireless Manager (CWM) historically used SNMP polling for real-time performance collection from PMP access points.

Question 2

In ePMP performance monitoring, what does 'Downlink Efficiency' measure?

Accepted Answer

The ratio of useful payload bytes to total bytes transmitted including overhead

Answer

Downlink Efficiency captures how much of the transmitted data is actual payload versus protocol overhead and retransmissions.

Question 3

Which cnMaestro alert condition most directly warns you of a performance degradation before users notice dropped throughput?

Accepted Answer

High airtime utilization threshold breach

Answer

High airtime utilization is a leading indicator—it shows the sector is approaching capacity before users experience measurable throughput drops.

Question 4

On a PMP 450i AP, what performance statistic directly reflects the quality of the GPS timing source used for frame synchronization?

Accepted Answer

GPS Timing Pulse Accuracy (PPS error)

Answer

GPS PPS (Pulse Per Second) error indicates how precisely the AP's frame timing aligns with the GPS reference, which directly affects synchronization quality.

Question 5

When analyzing cnMaestro throughput graphs, a regular saw-tooth pattern in downlink throughput most likely indicates what?

Accepted Answer

Periodic interference or scheduled traffic shaping cycles

Answer

Regular saw-tooth patterns in throughput graphs typically point to cyclical interference events or traffic shaping policies operating on fixed intervals.

Cambium Practice Test

Cambium Practice Test

Cambium Test Cambium Performance Tracking 3