A Junos device was upgraded to a new version, but after a few days, the engineer notices that a feature used by the network is no longer functioning correctly. The engineer decides to downgrade to the previous version. What should the engineer consider before performing the downgrade?

The downgrade process will automatically revert the configuration to the previous version's format.

The device will automatically reboot twice to complete the downgrade.

The downgrade will not affect the configuration at all.

The configuration may need to be adjusted because the previous version may not support some configuration statements added by the new version.

Which command is used to validate that a Junos OS package is intact before installation?

request system software validate

Which action is a recommended pre-upgrade check before upgrading Junos OS?

Back up the current configuration using the save command.

Verify that the device has sufficient free disk space in /var/tmp and /var/run.

Remove all user accounts to avoid authentication issues after the upgrade.

Disable all interfaces to prevent traffic during the upgrade.

An engineer needs to remove a Junos software package that was previously added to the device. Which command should the engineer use to delete the package?

'request system software replace'

'request system software validate'

'request system software delete'

Juniper NetworksCertified Associate, Junos

Domain 5Objective 4

Junos OS Installation and Upgrades JN0-105 Practice Questions (Page 2)

Part of the Operational Monitoring and Maintenance domain, which makes up ~15% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~5–9 in this domain), expect 1–2 from this objective — we provide 24 practice questions to prepare you well beyond it. (estimate)

24questions here

5free pages

6concepts

Questions 6–10

6application · medium
A Junos device was upgraded to a new version, but after a few days, the engineer notices that a feature used by the network is no longer functioning correctly. The engineer decides to downgrade to the previous version. What should the engineer consider before performing the downgrade?
Select an answer first
7application · easy
After installing a new Junos OS image and rebooting the device, the engineer wants to confirm that the new version is active and the system is functioning correctly. Which command should the engineer use?
Select an answer first
8foundation · easy
Which command is used to validate that a Junos OS package is intact before installation?
Select an answer first
9foundation · easy
Which action is a recommended pre-upgrade check before upgrading Junos OS?
Select an answer first
10application · easy
An engineer needs to remove a Junos software package that was previously added to the device. Which command should the engineer use to delete the package?
Select an answer first

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