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Juniper Junos Troubleshooting Sample Questions:

1. Which three commands will provide details about CPU utilization on a line card? (Choose three.)

A) show chassis hardware
B) request pfe execute target fpc1 command "show arp"
C) show chassis fpc
D) request pfe execute target fpc1 command "show sched"
E) request pfe execute target fpc1 command "show thread"

2. Which command would be used to clear stuck user sessions?

A) request chassis routing-engine master switch
B) request routing-engine login other-routing-engine
C) request system reboot
D) request system logout

3. Click the Exhibit button.
-- Exhibit -user@r2# run show route 100.1.1.0/24 detail
inet.0: 5 destinations, 5 routes (5 active, 0 holddown, 0 hidden)
100.1.1.0/24 (1 entry, 1 announced) *Static PreferencE. 5 Next hop typE. Reject Address: 0x8f7b5a4 Next-hop reference count: 2 StatE. Local AS: 65001 AgE. 59 Task: RT Announcement bits (1): 2-KRT AS path: 65005 I
user@r2# show protocols bgp
group ibgp { type external; export to-bgp; neighbor 10.1.2.1 { local-address 10.1.2.2; family inet { unicast; } family inet6 { unicast; } peer-as 65005; }
}
user@r2# run show bgp summary Groups: 1 Peers: 1 Down peers: 0 Table Tot Paths Act Paths Suppressed History Damp State Pending inet6.0
0 0 0 0 0 0 inet.0 0 0 0 0 0 0 Peer AS InPkt OutPkt OutQ Flaps Last Up/Dwn State|#Active/Received/Accepted/Damped...
10.1.2.1 65005 31 31 0 0 12:08 Establ inet6.0: 0/0/0/0 inet.0: 0/0/0/
user@r2# show policy-options
policy-statement to-bgp { from protocol static; then accept;
}
user@r2# run show route advertising-protocol bgp 10.1.2.1
[edit] user@r2# -- Exhibit -
Referring to the exhibit, router r2 does not advertise the static route to peer 10.1.2.1. What is the problem?

A) The export policy should be applied under the [edit protocols bgp group ibgp neighbor 10.1.2.1] hierarchy.
B) The static route has Next hop typE. Reject.
C) The export policy is incorrect.
D) An AS path loop is detected.

4. Which two commands help to identify traffic drops due to oversubscription? (Choose two.)

A) monitor interface traffic
B) monitor traffic interface
C) show interfaces queue
D) show interfaces extensive

5. Click the Exhibit button.
-- Exhibit -=================== Bootstrap installer starting =================== Initialized the environment Routing engine model is RE-S-1800x4 Discovered that flash disk = ad0 , hard disk = ad1 mount: /dev/ad1s1f : Invalid argument ERROR: mount_partition: Mount /dev/ad1s1a /mnt failed You are now in a debugging subshell (you may not see a prompt)... # -- Exhibit -
During the boot of your MX480, you see the output shown in the exhibit. Which three statements are true? (Choose three.)

A) You must swap the Routing Engine over to the backup slot to get it to boot properly.
B) The boot failed because one of the file systems is in an inconsistent state.
C) The Routing Engine cannot mount the partition to complete booting.
D) The boot failed because a USB drive has been inserted into the device.
E) Running fsck on the partition might resolve the boot problem.

Solutions: