Scenario: A Citrix Administrator is managing a Citrix ADC SDX running eight Citrix ADC instances. The administrator first needs to upgrade the firmware on the instances. However; the administrator is concerned that it needs to be done all at once.
What upgrading flexibility does SDX provide in this scenario?
The Citrix ADC instance can be upgraded on an individual basis, allowing all instances to run different firmware versions. This flexibility ensures that each instance can be upgraded separately without needing to upgrade all instances at once, addressing the administrator's concern.
D - https://docs.citrix.com/en-us/sdx/current-release/single-bundle-upgrade/upgrade-netscaler-instance.html Last bullet point in this section: Upgrade Citrix ADC VPX instances You can use the Management Service to upgrade one or more of the VPX instances running on the appliance. Before upgrading an instance, make sure that you have uploaded the correct build to the SDX appliance. Before you start upgrading any instance, ensure that you understand the licensing framework and types of licenses. A software edition upgrade (such as from a standard edition to the enterprise edition or from an enterprise edition to the platinum edition) might require new licenses. Also note the following: To prevent any loss of configuration, save the configuration on each instance before you upgrade any instances. You can also upgrade an individual instance from the Instances node. To do so, select the instance from the Instances node. In the details pane, select the instance, and then in the Actions drop down menu, click Upgrade.
"the administrator is concerned that it needs to be done all at once" It doesn't all have to be done at once. It can, but it doesn't and I think that's the point of the question.
D. is correct.
C https://docs.citrix.com/en-us/sdx/current-release/single-bundle-upgrade/upgrade-netscaler-instance.html
Your URL mentions its upon administrator to upgrade one or more and never mentioned MANDATORY to upgrade all at once https://docs.citrix.com/en-us/sdx/current-release/single-bundle-upgrade/upgrade-netscaler-instance.html#:~:text=one%20or%20more%20of%20the%20vpx%20instances%20running%20on%20the%20appliance
I confirm, C is the correct answer
c is correct
I agree , C is correct
C is also correct, but the question is about flexibility, so D is correct