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Question 55 - 500-220 discussion

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Refer to the exhibit.

Which condition or conditions will cause the 'All Databases & cloud services' SD-WAN traffic to be routed via a VPN2 tunnel on WAN2?

A.

WAN1 tunnel latency is 20 ms or less, irrespective of WAN2 tunnel performance.

Answers
A.

WAN1 tunnel latency is 20 ms or less, irrespective of WAN2 tunnel performance.

B.

WAN1 tunnel latency is 20 ms or more, and WAN2 tunnel meets the configured performance criteria.

Answers
B.

WAN1 tunnel latency is 20 ms or more, and WAN2 tunnel meets the configured performance criteria.

C.

WAN1 tunnel latency is 20 ms or less, and WAN2 tunnel meets the configured performance criteria.

Answers
C.

WAN1 tunnel latency is 20 ms or less, and WAN2 tunnel meets the configured performance criteria.

D.

WAN1 tunnel latency is 20 ms or more, irrespective of WAN2 tunnel performance.

Answers
D.

WAN1 tunnel latency is 20 ms or more, irrespective of WAN2 tunnel performance.

Suggested answer: B

Explanation:

This is because the SD-WAN policy for ''All Databases & cloud services'' has the following settings:

Uplink selection policy: Prefer WAN1, Fail over if down

Traffic filters: Custom performance classes

Custom performance classes: Database

Database performance criteria: Maximum latency 200 ms, Maximum jitter 20 ms, Maximum loss 1%

This means that the SD-WAN traffic will be routed via WAN1 by default, unless WAN1 is down or fails to meet the database performance criteria. In that case, the traffic will be routed via WAN2, if WAN2 meets the database performance criteria. Therefore, the condition that will cause the traffic to be routed via WAN2 is when WAN1 tunnel latency is 20 ms or more (which exceeds the maximum jitter of 20 ms), and WAN2 tunnel meets the configured performance criteria (maximum latency 200 ms, maximum jitter 20 ms, maximum loss 1%).

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asked 11/10/2024
Eric Jones
43 questions
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