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A network architect is looking at the topology and metrics used to build and update a routing information base. Most routing information bases get classified as which of the following? (Select all that apply.)

a) Static
b) Dynamic
c) Link-state
d) Hierarchical

1 Answer

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Final answer:

Routing information bases might be classified as static, dynamic, or utilizing link-state protocols. Static RIBs have manually entered and unchanging routes, dynamic RIBs are automatically updated with the network, and link-state protocols map the network to determine optimal paths.

Step-by-step explanation:

A network architect tasked with building or updating a routing information base (RIB) would generally classify it based on the methods used to populate and maintain the routing tables within it. The classifications for routing information bases include, but are not limited to:

  • Static: A static RIB is one where the routes are manually entered and do not change unless a network administrator changes them. This method does not adapt automatically to network changes.
  • Dynamic: In contrast to static, a dynamic RIB is updated automatically as the network topology changes. This category relies on routing protocols that dynamically exchange routing information between routers.
  • Link-state: This is a type of dynamic routing protocol that creates a map of the network topology which is then used by routers to determine the best paths.

It's important to note that 'hierarchical' is not typically used as a classification for a routing information base. Instead, hierarchical may refer to the design of a network system where routers are organized in a way that reduces the number of routes a single router must store and processes, known as a hierarchical routing structure.

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