JN0-106 Operational Monitoring and Maintenance Practice Question
A network engineer wants to schedule a reboot of a Juniper device at 3:00 AM. Which command should be used?
⚠ Common exam trap
A common mix-up: candidates confuse 'request system reboot' (immediate reboot) with 'request system reboot at' (scheduled reboot), or they mistakenly think that loading a configuration file will trigger a reboot.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
request system reboot at 03:00
The 'request system reboot at 03:00' command schedules a one-time reboot of the Juniper device at the specified time (3:00 AM). The 'at' parameter allows the engineer to set an absolute time for the reboot, which is the exact requirement for scheduling a reboot at a specific future time.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
request system configuration rescue save
Why it's wrong here
The `request system configuration rescue save` command saves the current active configuration as the rescue configuration in `/config/rescue.conf.gz`. It creates a known-good rollback snapshot that can be loaded if the normal configuration fails to commit or causes boot issues. This operation does not affect system uptime or schedule any reboot, so it cannot fulfill the engineer's requirement.
- ✗
request system reboot
Why it's wrong here
The plain `request system reboot` command triggers an immediate reboot of the Junos device, closing all active user sessions and restarting the control and forwarding planes. There is no time parameter, so Junos executes the reboot right away rather than waiting for a designated schedule. Since the engineer wants a reboot at 03:00, this command would reboot now, not at the intended time.
- ✓
request system reboot at 03:00
Why this is correct
The `request system reboot at 03:00` command schedules the reboot to occur at 03:00 in the device's local time zone. Junos validates the time argument and queues the reboot, allowing the engineer to finish maintenance tasks before the device restarts. This is the exact operational command designed for a scheduled reboot at a specific time.
- ✗
load override /config/juniper.conf.gz
Why it's wrong here
The `load override /config/juniper.conf.gz` command is executed in configuration mode and replaces the candidate or active configuration with the contents of the specified file. It is a configuration-loading operation, not a system reboot command, and it has no scheduling effect on the device's power or restart cycle. Loading this file would alter the device's configuration but would not cause a reboot at 03:00.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This JN0-106 practice question is part of Courseiva's free Juniper Networks certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the JN0-106 exam.