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Updated: Oct 28, 2026
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Juniper JN0-690 Exam Overview:
| Certification Vendor: | Juniper Networks |
|---|---|
| Exam Name: | Junos Troubleshooting Specialist (JNT) |
| Exam Number: | JN0-690 |
| Exam Price: | USD 200 (varies by region) |
| Exam Duration: | 90 minutes |
| Related Certifications: | JNCIP-ENT JNCIA-Junos JNCIS-ENT JNCIS-SP |
| Certificate Validity Period: | 3 years |
| Passing Score: | Variable (scaled score, typically ~70%) |
| Real Exam Qty: | 65 |
| Available Languages: | English |
| Exam Format: | Multiple choice, Scenario-based questions |
| Sample Questions: | Juniper JN0-690 Sample Questions |
| Exam Way: | Online proctored or authorized testing center (Pearson VUE) |
| Pre Condition: | Recommended: JNCIA-Junos and JNCIS-level knowledge in routing and switching |
| Official Syllabus URL: | https://www.juniper.net/us/en/training/certification/ |
Juniper JN0-690 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| System Operations and Device Health | - Chassis and hardware status
|
| Routing Policy and Firewall Filters | - Policy evaluation and debugging
|
| Layer 2 and Switching Troubleshooting | - VLAN and bridging issues
|
| Layer 3 Routing Troubleshooting | - OSPF and IS-IS troubleshooting
|
| Troubleshooting Methodology and Tools | - Junos operational commands (ping, traceroute, monitor traffic)
|
| VPN and Service Troubleshooting | - IPsec VPN issues
|
Juniper Junos Troubleshooting Sample Questions:
You have configured and successfully committed the configuration for nonstop active routing (NSR). Which command would you use to determine if NSR is operating correctly?
- A. Use the show system synchronization command only on the master Routing Engine.
- B. Use the show task replication command on the master and the backup Routing Engines.
- C. Use the show task replication command only on the master Routing Engine.
- D. Use the show system synchronization command on the master and the backup Routing Engines.
Correct Answer: B 🗳️
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 info;
authorization info;
} - B. user * {
any emergency;
}
file messages {
any notice;
authorization info;
}
file interactive-commands {
interactive-commands any;
} - C. user * {
any any;
}
file messages {
any notice;
authorization info;
} - D. user * {
any emergency;
}
file messages {
any notice;
authorization info;
}
file audit-commands {
authorization any;
}
Correct Answer: B 🗳️
You are notified about a router reboot event.
Which command would be helpful in determining the reason for the last reboot?
- A. show chassis routing-engine
- B. show system snapshot
- C. show chassis craft-interface
- D. show system reboot
Correct Answer: A 🗳️
In Junos, which process has its own internal task scheduler?
- A. ppmd
- B. mgd
- C. chassisd
- D. rpd
Correct Answer: D 🗳️
What is the name of the routing protocol process on a Junos OS device?
- A. snmpd
- B. chassisd
- C. cosd
- D. rpd
Correct Answer: D 🗳️
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