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Exam JN0-348 topic 1 question 39 discussion

Actual exam question from Juniper's JN0-348
Question #: 39
Topic #: 1
[All JN0-348 Questions]

You are adding a new EX4300 member switch to your existing EX4300 Virtual Chassis. However, the new member is not running the same Junos version as the other members.
By default, what is the expected behavior in this scenario?

  • A. the Virtual Chassis will transition into a split brain situation between the existing master Routing Engine and the switch running the different version.
  • B. The new switch will automatically pull the correct version from the master Routing Engine and perform the necessary upgrade.
  • C. The new switch will be assigned a member ID and then placed in an inactive state.
  • D. The new switch is not recognized by the Virtual Chassis.
Show Suggested Answer Hide Answer
Suggested Answer: C 🗳️

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hoosker
Highly Voted 3 years, 4 months ago
https://www.juniper.net/documentation/en_US/junos/topics/concept/virtual-chassis-ex4200-software-automatic-update.html "If the software version on the new switch is not the same as the version running on the master, the master keeps the new switch in the inactive state. If you have not enabled the automatic software update feature, you have to manually install the correct software version on each prospective member switch as it is added to the Virtual Chassis." You must enable Auto Upgrade feature, it is not on by default.
upvoted 18 times
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65briang
Most Recent 2 years, 1 month ago
Default is stated as disabled for the sw-update feature https://www.juniper.net/documentation/us/en/software/junos/virtual-chassis-fabric/topics/ref/statement/auto-sw-update-edit-virtual-chassis.html#auto-sw-update__d3807e110
upvoted 1 times
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Mike_84
2 years, 9 months ago
https://www.juniper.net/documentation/us/en/software/junos/virtual-chassis-fabric/topics/ref/statement/auto-sw-update-edit-virtual-chassis.html#auto-sw-update__d3807e110
upvoted 2 times
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kokoyul
2 years, 10 months ago
"If a software version mismatch exists, the VIrtual Chassis generates a syslog message and places the newly added switch in the inactive state"
upvoted 1 times
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Ad_Latjes
3 years, 5 months ago
Although C is normal behaviour, the quote from Junipers website: The automatic software update feature allows you to automatically update the software version on prospective member switches...
upvoted 1 times
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Ad_Latjes
3 years, 5 months ago
Sorry answer B ( because of the auto upgrade feature enabled)
upvoted 1 times
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Ad_Latjes
3 years, 5 months ago
Some forums are mentioning answer A, because the auto upgrade is configured on some platforms by default.
upvoted 1 times
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A (35%)
C (25%)
B (20%)
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