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Data Center, Associate (JNCIA-DC) (JN0-280) - Juniper Exam Questions

Last updated on June 20, 2026

97% Exam Compliance
65 Total Questions
1
Question
Which operation mode command will display the mapping between the VLAN ID and ports on a switch?
Options
A show interfaces terse
B show ethernet-switching table
C show route
D show vlans
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2
Question
Exhibit:

Exhibit

R2 received an OSPF update from R1, and it received the same update from R3. Referring to the exhibit, what will R2 do?
Options
A R2 ignores the update from R3.
B R2 does nothing with R3's update.
C R2 ignores the update from R1.
D R2 acknowledges R3 and discards it.
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3
Question
Which three technologies improve high availability and convergence in a data center network? (Choose three.)
Select 3
Options
A link loss adjacency
B Bidirectional Forwarding Detection (BFD)
C graceful restart (GR)
D Failover Group (FG)
E link aggregation group (LAG)
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4
Question
Layer 2 interfaces operate in which two modes? (Choose two.)
Select 2
Options
A Trunk
B Modular
C Access
D Tagged
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5
Question
What are three correct layer names used in legacy hierarchical network design? (Choose three.)
Select 3
Options
A Aggregation layer
B Modular layer
C Access layer
D Core layer
E Function layer
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