Refer to the exhibit.

Cisco 300-820 Question Answer

Refer to the exhibit. The neighbor zone to Cisco UCM fails to come up when TLS verify mode is enabled on the Expressway-C for B2B traffic. Which Issue correctly describes the cause of the error?

The certificate has a key length of 8192 bits.

TLS verify mode is enabled on the neighbor zone.

Subject Alternative Name fields are longer than 999 characters.

The neighbor system FQDN is missing from Subject Alternative Name attributes of the certificate.

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Cisco 300-820 Summary

Vendor: Cisco
Product: 300-820
Update on: Jul 27, 2025
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