Auto-registration is enabled on a mixed-mode Cisco Unified Communications Manager with software version 11.0
A new Cisco 7965 SCCP IP Phone just downloaded the default phone configuration file from the TFTP server in the cluster.
Which result is true?
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A. B. C. D. E.Explanation.
Auto-registration is a feature that allows a new Cisco IP phone to automatically register with a Cisco Unified Communications Manager (CUCM) server without requiring any manual configuration. When auto-registration is enabled, the phone downloads a default phone configuration file from the TFTP server in the CUCM cluster.
In this scenario, the CUCM version is 11.0, and auto-registration is enabled on a mixed-mode cluster. A new Cisco 7965 SCCP IP phone has just downloaded the default phone configuration file from the TFTP server. The question asks which result is true.
Option A: The IP phone attempts to auto-register with the highest priority Cisco UCM node on the default phone configuration file, but the registration is rejected. This option suggests that the auto-registration attempt fails. It also implies that there is more than one CUCM node in the cluster, and the highest priority node is the one that the IP phone tries to register with. However, it does not provide a reason for the registration failure.
Option B: The IP phone attempts to auto-register with a Cisco UCM node UCM1, and the registration is rejected. This option specifies that the IP phone tries to register with a specific CUCM node named UCM1, rather than the highest priority node. However, it does not provide any justification for this choice, nor does it explain why the registration fails.
Option C: The IP phone attempts to auto-register with TFTP server, and the registration is rejected. This option suggests that the IP phone attempts to register with the TFTP server instead of the CUCM server. However, this is not possible because the TFTP server only provides the default phone configuration file, and it does not handle call control or call signaling. As a result, this option is incorrect.
Option D: The IP phone attempts to auto-register with the highest priority Cisco UCM node on the default phone configuration file, and the registration is successful. This option indicates that the IP phone registers with the highest priority CUCM node, and the registration succeeds. This is the expected behavior when auto-registration is enabled and there are no issues with the CUCM configuration or network connectivity.
Option E: The IP phone does not attempt to auto-register. This option implies that there is an issue with the auto-registration feature, preventing the IP phone from attempting to register with any CUCM server. However, this is unlikely to be the case since the question states that auto-registration is enabled. Therefore, this option is incorrect.
In summary, the correct answer is Option D: The IP phone attempts to auto-register with the highest priority Cisco UCM node on the default phone configuration file, and the registration is successful.