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Juniper Junos Troubleshooting Sample Questions:

1. You are asked to provide an audit trail for all user activity on your Junos device.
Which syslog configuration statement accomplishes this task?

A) user * {
any any;
}
file messages {
any notice;
authorization info;
}
B) user * {
any emergency;
}
file messages {
any notice;
authorization info;
}
file audit-commands {
authorization any;
}
C) user * {
any emergency;
}
file messages {
any notice;
authorization info;
}
file interactive-commands {
interactive-commands any;
}
D) user * {
any any;
}
file messages {
any info;
authorization info;
}

2. Which two tools would be used to troubleshoot BGP peering problems? (Choose two.)

A) traceoptions
B) the inet.3 routing table
C) the link-state database
D) the monitor traffic interface command

3. Click the Exhibit button.
-- Exhibit -user@R1> show configuration interfaces xe-1/1/0 {
unit 0 { family inet {
address 17.1.1.1/24;
}
family mpls;
}
}
user@R1> ping 17.1.1.2 size 1473 do-not-fragment
PING 17.1.1.2 (17.1.1.2): 1473 data bytes
ping: sendto: Message too long
ping: sendto: Message too long
ping: sendto: Message too long
user@R1> ping 17.1.1.2 logical-system R1 size 1472 do-not-fragment
PING 17.1.1.2 (17.1.1.2): 1472 data bytes
1480 bytes from 17.1.1.2: icmp_seq=0 ttl=64 time=0.933 ms
1480 bytes from 17.1.1.2: icmp_seq=1 ttl=64 time=0.838 ms
1480 bytes from 17.1.1.2: icmp_seq=2 ttl=64 time=4.688 ms
-- Exhibit --
You are using the ping command to troubleshoot a suspected MTU problem.

A) The first ping fails because the Junos OS takes into account ICMP and IP headers while calculating the MTU.
B) The first ping fails because the Junos OS takes into account the CRC header while calculating the MTU.
C) Referring to the exhibit, which two statements are true? (Choose two.) The first ping fails because the do-not-fragment option is set.
D) The first ping fails because the Junos OS takes into account Layer 2 headers while calculating the MTU.

4. Click the Exhibit button.
-- Exhibit -root@router> show system storage Filesystem Size Used Avail Capacity Mounted on /dev/da0s1a 742M 741M -6.6M 101% /junos/cf devfs 1.0K 1.0K 0B 100% /dev devfs 1.0K 1.0K 0B 100% /dev/ /dev/md0 494M 494M 0B 100% /junos /cf 742M 741M -6.6M 101% /junos/cf devfs 1.0K 1.0K 0B 100% /junos/dev/ procfs 4.0K 4.0K 0B 100% /proc /dev/bo0s3e 24M 108K 22M 0% /config /dev/bo0s3f 342M 110M 205M 35% /cf/var /dev/md1 168M 14M 141M 9% /mfs /cf/var/jail 342M 110M 205M 35% /jail/var devfs 1.0K 1.0K 0B 100% /jail/dev /dev/md2 39M 4.0K 36M 0% /mfs/var/run/utm /dev/md3 1.8M 4.0K 1.7M 0% /jail/mfs -- Exhibit -
Your device running the Junos OS has become slow and you obtain frequent errors when you try to make changes.
Referring to the exhibit, which three actions would resolve the problem? (Choose three.)

A) Issue the request system software delete-backup command.
B) Issue the rollback 0 command to clear the unneeded configurations on the router.
C) Enter the shell subsystem and issue the rm -rf /junos command.
D) Use file delete or the shell subsystem to remove files from the /var/tmp directory.
E) Issue the request system storage cleanup command.

5. 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 master 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 backup Routing Engine.

Solutions: