312-50V11 · Question #370
Which of the following descriptions is true about a static NAT?
The correct answer is D. A static NAT uses a one-to-one mapping.. Static NAT creates a permanent, one-to-one mapping between a single private IP address and a single public IP address.
Question
Which of the following descriptions is true about a static NAT?
Options
- AA static NAT uses a many-to-many mapping.
- BA static NAT uses a one-to-many mapping.
- CA static NAT uses a many-to-one mapping.
- DA static NAT uses a one-to-one mapping.
How the community answered
(24 responses)- A4% (1)
- B4% (1)
- D92% (22)
Why each option
Static NAT creates a permanent, one-to-one mapping between a single private IP address and a single public IP address.
Many-to-many mapping does not describe any standard NAT type; static NAT always involves a fixed single-to-single address relationship.
One-to-many mapping describes PAT (Port Address Translation), also called NAT overload, where one public IP serves many private hosts simultaneously.
Many-to-one mapping also describes PAT/NAT overload, not static NAT, since many private addresses share a single public IP.
Static NAT permanently maps one specific private IP address to one specific public IP address, meaning the translation is fixed and does not change. This is used for servers that must always be reachable at the same public address, distinguishing it from dynamic NAT or PAT which share addresses across multiple hosts.
Concept tested: Static NAT one-to-one address mapping
Source: https://www.cisco.com/c/en/us/support/docs/ip/network-address-translation-nat/13772-12.html
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