which two statement about DNS lookup operations are true?(choose two)
A.
The client sends a request for domain name to IP address resolution to the DNS server
B.
When the primary IP address of the destination is down,the DNS server can forward the client to an alternate IP address
C.
The DNS server pings the destination to verify that it is available
D.
The client sends a request for IP address to domain name resolution to the DNS server
E.
They use destination port 53