Which statement best describes a dynamic NAT pool?

• A. A pool of private addresses translated to public.
• B. A pool of public addresses assigned as needed.
• C. A single fixed public address.
• D. No translation occurs.

Answer: (B)

Dynamic NAT uses a pool of public IP addresses that are assigned to internal hosts as needed. When a device with a private IP initiates outbound traffic, the router grabs an available public IP from the NAT pool and creates a temporary mapping between the private address (and port) and that public address (and port). This lets many internal devices share a limited number of public addresses, with translations released back to the pool when sessions end. A single fixed public address would be static NAT, not dynamic NAT, and no translation means there’s no NAT at all.