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Juniper JN0-690 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Services and Protocol Troubleshooting | - NAT and firewall filter behavior - VPN and tunnel troubleshooting |
| Routing Policy and Filter Issues | - Policy application and route selection - Filter evaluation and debugging |
| Layer 3 Routing Troubleshooting | - BGP troubleshooting - Static routing and route lookup issues - OSPF troubleshooting |
| Interface and Layer 2 Troubleshooting | - Interface status and error diagnosis - VLAN and switching issues |
| System Monitoring and Diagnostics | - Logs, traces, and system alarms - Performance and connectivity analysis tools |
| Junos OS Fundamentals and Architecture | - Junos OS process architecture and components - System operation and maintenance basics |
Juniper Junos Troubleshooting Sample Questions:
Question 1
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 major alarm relay is on.
B. Routing Engine 1 is OK, the red LED is lit, and the minor 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 has failed, yellow LED is lit, and the minor alarm relay is on.
Question 2
Given the example shown below:
Emergency boot media > flash disk > _____
What is missing from the default boot list?
A. USB
B. PCMCIA card
C. LAN
D. hard disk
Question 3
Two neighboring routers running OSPF were configured with the same router ID by mistake.
Which OSPF operational mode command would report the number of hello packets received with the local router's router ID?
A. show ospf io-statistics
B. show ospf statistics
C. show ospf log
D. show ospf route
Question 4
Click the Exhibit button.
-- Exhibit -user@R1> show route forwarding-table destination 2.2.2.2
user@R1> show route 2.2.2.2
inet.0: 10 destinations, 10 routes (10 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both
2.2.2.2/32 *[OSPF/10] 2w3d 22:19:41, metric 1 > to 17.1.1.2 via xe-1/1/0.0
-- Exhibit -
Referring to the exhibit, which statement is true about transit traffic sent to 2.2.2.2?
A. R1 will discard the packet.
B. R1 will reject the packet.
C. R1 will forward the packet.
D. R1 will redirect the packet to the Routing Engine.
Question 5
Which operational CLI command would you use to display information about the system and software processes?
A. show route
B. show system
C. show cli
D. show chassis
Solutions:
| Question 1 Answer: D | Question 2 Answer: D | Question 3 Answer: B | Question 4 Answer: A | Question 5 Answer: B |
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