| Exam 300-080 | Question id=4166 | Troubleshoot Registration Issues |
Which CUCM database replication Issue would cause CUCM nodes to generate the error "Reverse DNS lookup failed"?
| A. |
DNS server is down | |
| B. |
DNS server reported that no IP address was returned for a requested A record lookup | |
| C. |
DNS server reported that no HOSTNAME was returned for a requested A record lookup | |
| D. |
DNS server reported that no IP address existed for a requested SRV record lookup | |
| E. |
DNS server reported that no HOSTNAME was returned for a requested PTR record lookup |