The many-to-one IP address mapping by a router is possible by keeping _______ in addition to the sender's and receiver's IP addresses in its mapping table.
A) subnet masks
B) port numbers
C) MAC addresses
D) exit interface (ex. s0/0/0)
E) sender's private address

Question

Quizplus · Accepted Answer

Many-to-one IP address mapping, often used in NAT (Network Address Translation) scenarios, requires keeping track of port numbers in addition to the sender's and receiver's IP addresses. This allows multiple private IP addresses to be mapped to a single public IP address with each session distinguished by a unique port number.

The Many-To-One IP Address Mapping by a Router Is Possible