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Juniper JN0-690 Exam Syllabus Topics:

Juniper Junos Troubleshooting Sample Questions:

Question 1

You have configured graceful Routing Engine switchover (GRES) on your device running the Junos OS. Which command would you run to ensure that GRES is functioning properly?

A. Issue the show system switchover command from the backup Routing Engine.
B. Issue the show chassis routing-engine command from the backup Routing Engine.
C. Issue the show chassis routing-engine command from the master Routing Engine.
D. Issue the show system switchover command from the master Routing Engine.

Question 2

A customer operates a multi-vendor production network. They report that LSAs are aging out on Junos devices. Which OSPF parameter must be tuned to prevent this behavior?

A. hello interval
B. LSA refresh interval
C. dead interval
D. LSA retransmission interval

Question 3

Which operational CLI command would you use to display information about the system and software processes?

A. show chassis
B. show cli
C. show route
D. show system

Question 4

-- Exhibit -
user@router> show system switchover
Graceful switchover: On
Configuration databasE. Ready
Kernel databasE. Version incompatible
Peer statE. Steady State
-- Exhibit -
You have enabled graceful Routing Engine switchover (GRES). During verification, you switched mastership and all interfaces went down.
Referring to the output shown in the exhibit, why did the interfaces go down?

A. The synchronization failed because the Junos OS version on the backup is incompatible with the version running on the master.
B. The synchronization failed because the Routing Engine models are different between the master and backup.
C. The synchronization failed because the Junos OS version on the backup does not support GRES.
D. The synchronization failed because the master Routing Engine cannot communicate with the backup Routing Engine.

Question 5

Given the example shown below:
Emergency boot media > flash disk > _____
What is missing from the default boot list?

A. PCMCIA card
B. USB
C. LAN
D. hard disk

Solutions: