Configure SD-WAN to Load Balance Traffic Between Multiple WAN Links Effectively NSE4-FORTIOS-ADMINISTRATOR Practice Questions (Page 3)

Questions 11–15

1. 11foundation · easy

   How does FortiGate SD-WAN integrate with dynamic routing protocols like BGP?

   • ADynamic routing protocols are used to exchange routes over the SD-WAN overlay, and SD-WAN rules can override the best route for specific traffic.
   • BSD-WAN replaces dynamic routing entirely, so BGP is not needed.
   • CBGP is used only for hub-and-spoke, not for SD-WAN.
   • DDynamic routing is only supported on the underlay, not on SD-WAN interfaces.
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2. 12foundation · easy

   What is the main goal of application-aware routing in SD-WAN?

   • ATo block all non-business applications from using the WAN.
   • BTo route traffic based on the application's requirements, such as latency or bandwidth needs.
   • CTo route all traffic over the most expensive link to ensure quality.
   • DTo use a single link for all applications to simplify management.
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4. 13expert · hard

   An administrator has configured SD-WAN with two links and a health check that measures latency and jitter. They notice that the SD-WAN is not failing over to the secondary link when the primary link's latency spikes above the threshold. The health check status shows the primary link as 'alive'. What could be the reason?

   • AThe health check is configured with a 'probe-packet-size' that is too small, so it does not accurately measure latency.
   • BThe SD-WAN rule for the traffic is configured with 'preferred' member set to the primary link, and the 'quality' option is not enabled.
   • CThe secondary link is not configured as a member of the same SD-WAN zone.
   • DThe health check is configured to use a different protocol than the actual traffic, so it does not reflect the real link quality.
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5. 14application · medium

   A company wants to use SD-WAN to improve the performance of their Office 365 traffic. They have two WAN links: a fiber link with low latency and a cable link with higher latency. They want to ensure that Office 365 traffic always uses the fiber link, but they also want to load balance other traffic. What should they do?

   • ACreate an SD-WAN rule for Office 365 with the fiber link as the preferred member, and a separate rule for other traffic with a load-balance algorithm.
   • BConfigure the cable link as a backup link only, and use the fiber link for all traffic.
   • CSet the 'link-cost' on the fiber link to a lower value and use the 'Volume' algorithm.
   • DUse the 'Sessions' load-balance algorithm for all traffic, which will distribute sessions evenly across both links.
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6. 15foundation · easy

   In the context of SD-WAN, what is the role of the overlay network?

   • AIt is a dedicated circuit used only for backup links.
   • BIt is the management plane used to configure individual routers locally.
   • CIt provides the physical transport links such as MPLS, broadband, and LTE.
   • DIt is a virtual network built on top of the underlay that provides logical connectivity and policy control.
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