On the Cisco ASA Software Version 8.3 and later, which type of NAT configuration can be used to translate the source and destination IP addresses of the packet?

A.
auto NAT

B.
object NAT

C.
one-to-one NAT

D.
many-to-one NAT

E.
manual NAT

F.
identity NAT

Explanation:
http://tunnelsup.com/2011/06/24/nat-for-cisco-asas-version-8-3/
Manual NAT or Twice NAT or Policy NAT or Reverse NAT
The limitation that Auto NAT has is that it cannot take the destination into consideration when conducting it’s NAT. This also of course results in it not being able to
alter the destination address either. To accomplish either of these tasks you must use manual NAT. All of these terms are identical: Manual NAT, Twice NAT, Policy
NAT, Reverse NAT. Don’t be confused by fancy mumbo jumbo.
http://www.cisco.com/en/US/docs/security/asa/asa83/asdm63/configuration_guide/nat_overview html#wpxref64594
Main Differences Between Network Object NAT and Twice NAT The main differences between these two NAT types are:
·How you define the real address.
Network object NAT–You define NAT as a parameter for a network object; the network object definition itself provides the real address. This method lets you easily
add NAT to network objects. The objects can also be used in other parts of your configuration, for example, for access rules or even in twice NAT rules. Twice
NAT–You identify a network object or network object group for both the real and mapped addresses. In this case, NAT is not a parameter of the network object; the
network object or group is a parameter of the NAT configuration. The ability to use a network object group for the real address means that twice NAT is more
scalable.
·How source and destination NAT is implemented.
Network object NAT– Each rule can apply to either the source or destination of a packet. So two rules might be used, one for the source IP address, and one for
the destination IP address. These two rules cannot be tied together to enforce a specific translation for a source/destination combination.
Twice NAT–A single rule translates both the source and destination. A matching packet only matches the one rule, and further rules are not checked. Even if you
do not configure the optional destination address for twice NAT, a matching packet still only matches one twice NAT rule. The source and destination are tied
together, so you can enforce different translations depending on the source/destination combination. For example, sourceA/destinationA can have a different
translation than sourceA/destinationB.
·Order of NAT Rules.

Network object NAT–Automatically ordered in the NAT table. Twice NAT–Manually ordered in the NAT table (before or after network object NAT rules).