What does Static Network Address Translation enable?

What does Static Network Address Translation enable?

• A. A temporary one-to-one mapping between public and internal IPs.
• B. A dynamic pool of mappings.
• C. A permanent one-to-one mapping between a public IP and an internal IP.
• D. NAT translation that occurs per session.

Answer: (C)

Static NAT fixes a specific public IP to a specific internal IP for good, creating a permanent one-to-one mapping. This means the internal device always appears on the Internet as the same public address, so services hosted inside can be reliably reached from outside and security/firewall rules can be consistently applied. The mapping does not change over time and isn’t drawn from a pool of addresses, which is why it’s ideal for servers that must be consistently accessible. In contrast, other NAT types involve addresses that can change or are shared. A temporary or dynamic mapping is not permanent and can shift if the device reestablishes connections or the pool is replenished. A dynamic pool of mappings relies on available public addresses, so mappings can vary. Per-session translation describes how addresses are allocated for each connection, a behavior typical of NAT overloading or per-session NAT, not a fixed, unchanging assignment.

Static NAT fixes a specific public IP to a specific internal IP for good, creating a permanent one-to-one mapping. This means the internal device always appears on the Internet as the same public address, so services hosted inside can be reliably reached from outside and security/firewall rules can be consistently applied. The mapping does not change over time and isn’t drawn from a pool of addresses, which is why it’s ideal for servers that must be consistently accessible.

In contrast, other NAT types involve addresses that can change or are shared. A temporary or dynamic mapping is not permanent and can shift if the device reestablishes connections or the pool is replenished. A dynamic pool of mappings relies on available public addresses, so mappings can vary. Per-session translation describes how addresses are allocated for each connection, a behavior typical of NAT overloading or per-session NAT, not a fixed, unchanging assignment.