A network administrator wants to configure a backup route in case the primary route fails. A dynamic routing protocol is not installed on the router. Which of the following routing features should…

Question

Options

• ANeighbor adjacency
• BLink state flooding
• CAdministrative distance
• DHop count

• A
  3% (1)
• B
  11% (4)
• C
  83% (30)
• D
  3% (1)

Explanation

Introduction to Administrative Distance Administrative distance (AD) is a value used by routers to rank routes from different routing protocols. AD represents the trustworthiness of the source of the route. Lower AD values are more preferred. If a router has multiple routes to a destination from different sources, it will choose the route with the lowest AD. Static Routes and Backup Routes When a dynamic routing protocol is not used, static routes can be employed. Static routes are manually configured routes. To ensure a backup route, multiple static routes to the same destination can be configured with different AD values. Configuring Static Routes with Administrative Distance The primary route is configured with a lower AD value, making it the preferred route. The backup route is configured with a higher AD value. In the event of the primary route failure, the router will then use the backup route.

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