PSE-STRATA practice question 18 of 25

Which statement is true about Deviating Devices and metrics?

Full set: 139 questions
Answer options
A: A metric health baseline is determined by averaging the health performance for a given metric over seven days plus the standard deviation Correct answer
B: Deviating Device Tab is only available with a SD-WAN Subscription
C: An Administrator can set the metric health baseline along with a valid standard deviation
D: Deviating Device Tab is only available for hardware-based firewalls
Correct Answer:
A. A metric health baseline is determined by averaging the health performance for a given metric over seven days plus the standard deviation
Explanation

The Deviating Devices feature in PAN-OS SD-WAN monitoring helps administrators quickly identify branches or devices that are performing poorly compared to their peers. To do this, the system automatically establishes a performance baseline for key metrics like latency, jitter, and packet loss. This baseline is calculated by taking the average performance over the last seven days and then adding the standard deviation. Devices that exceed this calculated threshold are flagged as "deviating," indicating a potential issue that requires investigation.

Why Incorrect

B. While an SD-WAN subscription is required for the feature, this statement is less specific about the mechanics of "Deviating Devices and metrics" than option A.
C. The baseline and standard deviation are calculated automatically by the system to provide an objective, data-driven benchmark; they are not manually configured by an administrator.
D. The Deviating Devices monitoring tab is available for all platforms that support the SD-WAN feature, including both hardware firewalls and VM-Series virtual firewalls.

References

1. Palo Alto Networks. (2023). PAN-OS® SD-WAN Administrator’s Guide (Version 11.0). Monitor SD-WAN > Deviating Devices. "The SD-WAN plugin automatically determines a health baseline for each metric by averaging the health performance for a given metric over the last seven days and adding the standard deviation."

2. Palo Alto Networks. (2023). PAN-OS® SD-WAN Administrator’s Guide (Version 11.0). SD-WAN Overview. The guide indicates SD-WAN functionality is supported on a range of hardware and VM-Series platforms.

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