Which two statements about DNS support on Cisco NX-OS are true? (Choose two.)
Sure, I'd be happy to provide you with a detailed explanation of the correct answers for this question:
A. You have to configure a new VRF for DNS client, default VRF cannot be used.
This statement is true. In Cisco NX-OS, you need to configure a new VRF (Virtual Routing and Forwarding) for the DNS client. The default VRF cannot be used for DNS client configuration because it is reserved for system-related traffic and cannot be modified.
B. To map domain names to IP addresses in Cisco NX-OS, you must first identify the host names, then specify a name server, and enable the DNS service.
This statement is also true. To map domain names to IP addresses in Cisco NX-OS, you need to identify the host names first, then specify a name server, and enable the DNS service. This allows Cisco NX-OS to use the name server to resolve host names to IP addresses.
C. You can configure Cisco NX-OS to use only one domain name server to find an IP address for a host name.
This statement is false. In Cisco NX-OS, you can configure multiple domain name servers to find an IP address for a host name. This provides redundancy in case one name server is unavailable.
D. Cisco NX-OS does not allow you to statically map IP addresses to domain names.
This statement is false. In Cisco NX-OS, you can configure static DNS mappings using the "ip host" command. This allows you to map specific IP addresses to host names.
E. Cisco NX-OS supports stateless restarts for the DNS client. After a reboot or supervisor switchover, Cisco NX-OS applies the running configuration.
This statement is true. In Cisco NX-OS, the DNS client supports stateless restarts, which means that after a reboot or supervisor switchover, the DNS client automatically applies the running configuration without requiring a manual restart. This ensures that the DNS service remains available even after a system restart.
I hope this explanation helps you understand the correct answers for this question!