Juniper JN0-690 : Junos Troubleshooting

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Juniper Junos Troubleshooting Sample Questions:

1. Which three statements are true about performing an ISSU on a Junos device? (Choose three.)

A) The backup RE verifies disk space on both REs, unsupported configurations, and unsupported PICs.
B) Any unsupported PICs will cause the ISSU process to fail with "Error: incompatible hardware detected."
C) Every PFE on each FPC downloads the new software from the backup RE.
D) ksyncd synchronizes the kernel on the backup RE with the master RE.
E) The master RE verifies disk space on both REs, unsupported configurations, and unsupported PICs.

2. Which three statements are correct about rpd related troubleshooting on devices running the Junos OS? (Choose three.)

A) A possible method to troubleshoot rpd scheduler slips is to temporarily enable task accounting.
B) Excessive protocol tracing can never be a cause for an overworked rpd.
C) A log for rpd scheduler slip is an indication of something that should be investigated and resolved.
D) A possible cause for an overworked rpd is excessive protocol tracing.
E) A log for rpd scheduler slip is a common, harmless syslog and can be ignored.

3. You suspect that your router is missing the .0/24 routes for your local network. You first want to look for the routes on the control plane before troubleshooting the data plane.
Which operational mode command should you issue?

A) show arp
B) show route forwarding-table
C) show route flow validation table
D) show route

4. Click the Exhibit button.
-- Exhibit -
Slot 0 information: State Online Total CPU DRAM ---- CPU less FPC ---Start time 2012-07-07 03:21:00 UTC Uptime 27 minutes, 51 seconds Slot 1 information: State Present Reason --- Hardware Not In Right Slot --Slot 2 information: State Online Total CPU DRAM 32 MB Start time 2012-07-07 03:20:59 UTC Uptime 27 minutes, 52 seconds Slot 3 information: State Present Reason --- Hardware Not Supported --Total CPU DRAM 0 MB Slot 6 information: State Online Total CPU DRAM 32 MB Start time 2012-07-07 03:21:01 UTC Uptime 27 minutes, 50 seconds
-- Exhibit -
Referring to the exhibit, which three statements are true? (Choose three.)

A) The Flexible PIC Concentrator (FPC) in slot 1 is not installed properly for this chassis.
B) The Control Board in slot 0 has a missing CPU.
C) The Flexible PIC Concentrator (FPC) in slot 6 is online and working.
D) The Control Board in slot 6 is online and working.
E) The card in slot 3 is not supported by the chassis.

5. You want to reset all the PFE components with graceful Routing Engine switchover (GRES) disabled on the system. Which command should you use?

A) restart chassis-control immediately
B) restart chassis-control
C) restart routing
D) restart chassis-control soft

Solutions: