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Juniper

JN0-102 · Question #228

You are modifying the default route preference under the [edit protocols] hierarchy. In which two routing information sources can you change the default preference value? (Choose two.)

The correct answer is B. OSPF D. BGP. Under the [edit protocols] hierarchy, you can typically modify the default preference values for routing protocols like OSPF and BGP.

Configuration Basics

Question

You are modifying the default route preference under the [edit protocols] hierarchy. In which two routing information sources can you change the default preference value? (Choose two.)

Options

  • Alocal
  • BOSPF
  • Cdirect
  • DBGP

How the community answered

(30 responses)
  • A
    13% (4)
  • B
    80% (24)
  • C
    7% (2)

Why each option

Under the `[edit protocols]` hierarchy, you can typically modify the default preference values for routing protocols like OSPF and BGP.

Alocal

Local routes represent the router's own interface addresses; their preference value is typically fixed at 0 and cannot be changed under the `[edit protocols]` hierarchy as they are not a routing protocol.

BOSPFCorrect

OSPF is a dynamic routing protocol whose default preference value can be customized within the `[edit protocols ospf]` hierarchy, allowing an administrator to influence its priority in route selection.

Cdirect

Direct routes represent directly connected networks; their preference value is typically fixed at 0 and cannot be changed under the `[edit protocols]` hierarchy as they are not a routing protocol.

DBGPCorrect

BGP is a dynamic routing protocol whose default preference value can be configured under the `[edit protocols bgp]` hierarchy, enabling administrators to adjust its standing against other protocols when selecting the best path.

Concept tested: Modifying protocol preference

Source: https://www.juniper.net/documentation/us/en/software/junos/routing-policy/topics/topic-map/routing-policies-preference-values-modifying.html

Topics

#route preference#configuration#OSPF#BGP

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