Final answer:
NAT does not typically provide improved network performance; it is used for IP address conservation and provides some anonymity and increased security.
Step-by-step explanation:
You asked which of the following you do not get with Network Address Translation (NAT): a) Increased security b) Conservation of IP addresses c) Improved network performance d) Anonymity for internal devices. The answer is c) Improved network performance. NAT primarily serves to conserve public IP addresses and increase security by remapping internal (private) IP addresses to a single public IP address. This remapping can actually introduce additional processing overhead and may slow down network performance, especially in cases where the NAT device must handle a large number of simultaneous connection mappings. While NAT provides anonymity for internal devices to some extent by hiding internal IP addresses from external networks, and it does conserve IP addresses, improved network performance is not a feature of NAT; sometimes, the opposite is true.