FCSS_SDW_AR-7.4 · Question #56
You have configured the performance SLA with the probe mode as Prefer Passive. What are two observable impacts of this configuration? (Choose two.)
The correct answer is A. FortiGate passively monitors the member if TCP traffic is passing through the member. D. During passive monitoring, the SLA performance rule cannot detect dead members. When "Prefer Passive" is set, FortiGate attempts to passively monitor the health of SD-WAN members using real application traffic like TCP sessions, collecting statistics such as latency, jitter, and packet loss from actual observed flows. Passive monitoring does not generate…
Question
You have configured the performance SLA with the probe mode as Prefer Passive. What are two observable impacts of this configuration? (Choose two.)
Options
- AFortiGate passively monitors the member if TCP traffic is passing through the member.
- BAfter FortiGate switches to active mode, the SLA performance rule falls back to passive
- CFortiGate passively monitors the member if ICMP traffic is passing through the member.
- DDuring passive monitoring, the SLA performance rule cannot detect dead members.
- EFortiGate can offload the traffic that is subject to passive monitoring to hardware.
How the community answered
(32 responses)- A75% (24)
- B9% (3)
- C3% (1)
- E13% (4)
Explanation
When "Prefer Passive" is set, FortiGate attempts to passively monitor the health of SD-WAN members using real application traffic like TCP sessions, collecting statistics such as latency, jitter, and packet loss from actual observed flows. Passive monitoring does not generate probe packets; it relies entirely on existing traffic. If there is no matching traffic, health check data is unavailable, meaning dead members may go undetected when only passive monitoring is active.
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