Exam N10-009 topic 1 question 42 discussion

port address translation (PAT) The most commonly used form of network address translation, where the NAT uses the outgoing IP addresses and port numbers (collectively known as a socket) to map traffic from specific machines in the network.

C. Non-routable address on the perimeter router Port Address Translation allows multiple devices on a local network to be mapped to a single public IP address with different port numbers. This is particularly useful for: - **Non-routable address**: Providing access to devices with private, non-routable IP addresses (e.g., within a local network) via a single public IP address. This helps conserve public IP addresses and enables communication with external networks. PAT is a form of Network Address Translation (NAT) that extends the concept by utilizing port numbers to distinguish between different devices using the same public IP address.

PAT is used for translating non routable to routable. It doesnt translate already routable public ip's

The Correct is B. PAT utilizes public addresses, and they are routable.