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Juniper Junos Troubleshooting Sample Questions:

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

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

2. Which three steps are involved in troubleshooting any problem? (Choose three.)

A) Determine who made the changes.
B) Isolate the problem.
C) Reboot the device.
D) Outline the expected behavior.
E) Clearly define the problem.

3. Click the Exhibit button.
-- Exhibit -user@host > show chassis craft-interface
Front Panel System LEDs: Routing Engine 0 1
OK * . Fail . * Master * .
Front Panel Alarm Indicators:
Red LED .
Yellow LED *
Major relay .
Minor relay *
Front Panel FPC LEDs:
FPC 0 1 2 3 4 5 6 7 8 9
Red . . . . . . . . . . Green * * . . . . . . * * CB LEDs:
CB 0 1
Amber . . Green * *
PS LEDs: PS 0 1 2 3 4 5 6 7 8
Red . . . . . . . . . Green . . . . * * * * *
Fan Tray LEDs: FT 0 1 2 3
Red . . . . Green * * * *
Front Panel SFB LEDs: SFB 0 1 2 3 4 5 6 7
Red . . . . . . . . Green * * * * * * * *
Front Panel Chassis Info: Chassis Number 0x0 Chassis Role S
-- Exhibit -
Referring to the exhibit, which statement is true?

A) Routing Engine 1 has failed, yellow LED is lit, and the minor alarm relay is on.
B) Routing Engine 1 has failed, yellow LED is lit, and the major alarm relay is on.
C) Routing Engine 1 is OK, the red LED is lit, and the major alarm relay is on.
D) Routing Engine 1 is OK, the red LED is lit, and the minor alarm relay is on.

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

5. Which CLI command would be used to verify the routing protocol daemon memory usage?

A) show system processes extensive
B) show chassis routing-engine
C) show route detail
D) show route summary

Solutions: