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Juniper Junos Troubleshooting Sample Questions:

1. Click the Exhibit button.
-- Exhibit -user@router> show system processes extensive last piD. 4160; load averages: 0.13, 0.08, 0.07 up 2+02:47:50 21:13:39 120 processes: 17 running, 90 sleeping, 1 zombie, 12 waiting
Mem: 141M Active, 96M Inact, 517M Wired, 160M Cache, 112M Buf, 55M Free Swap:
PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMAND 1271 root 7 76 0 514M 63724K select 0 157.9H 280.42% flowd_octeon_hm 22 root 1 171 52 0K 16K RUN 0 43.3H 83.45% idlE. cpu0 4158 lab 1 78 0 49192K 16440K select 0 0:00 2.25% cli 1255 root 1 76 0 114M 17604K select 0 41:47 0.00% chassisd 24 root 1 -20 -139 0K 16K WAIT 0 18:50 0.00% swi7: clock 1293 root 1 76 0 12476K 6484K select 0 9:25 0.00% license-check 4159 root 1 76 0 38608K 5720K select 0 0:00 0.00% mgd
... 36 root 1 8 0 0K 16K usbevt 0 0:00 0.00% usb1 33 root 1 8 0 0K 16K usbevt 0 0:00 0.00% usb0 4160 root 1 77 0 24260K 1816K CPU0 0 0:00 0.00% top 1176 root 1 -8 0 0K 16K mdwait 0 0:00 0.00% md2 7 root 1 8 0 0K 16K - 0 0:00 0.00% thread taskq 1186 root 1 -8 0 0K 16K mdwait 0 0:00 0.00% md3 0 root 1 -8 0 0K 0K WAIT 0 0:00 0.00% swapper
-- Exhibit -
Referring to the exhibit, which Junos OS process was the last one to start?

A) swapper
B) cli
C) top
D) flowd_octeon_hm

2. Using Virtual Router Redundancy Protocol (VRRP), you want to statically force the priorities of the master and backup routers. Which priority would you set on the master router?

A) 254
B) 1
C) 128
D) 0

3. In Junos, which process has its own internal task scheduler?

A) mgd
B) chassisd
C) rpd
D) ppmd

4. Which three statements are correct about ARP related troubleshooting? (Choose three.)

A) An individual ARP entry can be cleared using the clear arp hostname command.
B) Most devices that run the Junos OS allow you to specify a manual ARP entry.
C) The clear arp command also clears the IPv6 neighbor cache.
D) There are no default ARP policers on any devices running the Junos OS.
E) The monitor traffic interface <interface-name> command can be used to watch ARP packets.

5. Click the Exhibit button.
-- Exhibit -[edit] user@router# show interfaces
ge-1/1/2 {
vlan-tagging;
unit 100 {
vlan-id 100;
family inet {
address 192.168.0.1/30;
}
}
}
lo0 {
unit 0 {
family inet {
address 10.10.10.1/32;
}
}
}
[edit]
user@router# show protocols ospf
area 0.0.0.0 {
interface ge-1/1/2.0 {
interface-type p2p;
metric 250;
}
interface lo0.0;
}
[edit]
user@router# run show ospf interface Interface State Area DR ID BDR ID Nbrs lo0.0 DR 0.0.0.0 10.10.10.1 0.0.0.0 0
[edit] user@router# -- Exhibit -
Referring to the exhibit, why does only the loopback interface appear in the show ospf interface output?

A) The incorrect logical unit for the ge-1/1/2 interface is configured under the OSPF hierarchy.
B) The ge-1/1/2 interface is configured under the wrong OSPF area.
C) The metric configured on ge-1/1/2 is not valid.
D) The interface-type is not configured properly on the ge-1/1/2 interface.

Solutions: