46. IPv6 sub-netting exactly 64 bits allocated to the interface portion of the address and the prefix mask replaces the subnet mask of IPv4 a. True b. False 47. Network Address Translation (NAT) only statically routes messages between the outward-facing IPv4 public address and the inward-facing private IPv6 address. a. True b. False 48. The Domain Name System (DNS) works by . (Select only one) a. Creating a name space for hosts b. Performing name registration for hosts c. Providing name resolution services including maintaining distributed tables of name spaces d. All of the above