Question 1 of 30
A company is planning to upgrade its Cisco Unified Communications Manager (CUCM) to enhance its collaboration capabilities. The IT team has identified that the current version is outdated and lacks support for newer features. They need to ensure that the upgrade process minimizes downtime and maintains service continuity. Which of the following strategies should the team prioritize during the upgrade process to ensure a smooth transition while adhering to best practices for software upgrades and patching?
Implement a rolling upgrade strategy across the cluster to ensure that at least one node remains operational at all times during the upgrade process.
Perform a complete shutdown of all nodes in the cluster before initiating the upgrade to avoid any potential conflicts.
Upgrade all nodes simultaneously to ensure that all features are available immediately after the upgrade.
Skip the backup process to save time, as the upgrade is expected to be straightforward and without issues.

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