Your SRX device is performing NAT to provide an internal resource with a public address. Your DNS server is
on the same network segment as the server. You want your internal hosts to be able to reach the internal
resource using the DNS name of the resource.
How do you accomplish this goal?

A.
Implement proxy ARP.

B.
Implement NAT-Traversal.

C.
Implement NAT hairpinning.

D.
Implement persistent NAT.

Explanation:
http://www.juniper.net/techpubs/software/junos-security/junos-security96/junos- security-swconfigsecurity/prxy-arp-nat_srx.html