CyberCertPrepNetwork FundamentalsSwitching & Routing BasicsEASYFree question
Scenario
A branch office router is configured with a primary MPLS connection to HQ (via OSPF, AD 110) and a secondary broadband internet connection as a backup. The network engineer wants the broadband route to only be used when the MPLS path fails, not during normal operations.
What specific configuration makes the broadband static route a floating (backup-only) route that only becomes active when the OSPF-learned primary route disappears?
- A.Configure IP SLA to track the broadband interface status and set OSPF cost to 1 on that interface
- B.Configure the static backup route with a metric of 0 so it is always de-preferred compared to OSPF metrics
- C.Use a route-map on the OSPF process to prefer the MPLS interface over the broadband interface
- D.Configure the static backup route with an administrative distance higher than OSPF (e.g., AD 200), so the OSPF route (AD 110) is always preferred when present; when OSPF loses the route, the static with AD 200 becomes the only match and is installed
Why D is correct