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.
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)- A13% (4)
- B80% (24)
- C7% (2)
Why each option
Under the `[edit protocols]` hierarchy, you can typically modify the default preference values for routing protocols like OSPF and BGP.
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.
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.
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.
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
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