Exam N10-008 topic 1 question 867 discussion

Here’s why A. A router can perform PAT, but a Layer 3 switch cannot is incorrect: Modern Layer 3 Switches Can Perform PAT Port Address Translation (PAT) is a feature of Network Address Translation (NAT) that allows multiple devices to share a single public IP address by using different port numbers. While traditionally associated with routers, modern Layer 3 switches are fully capable of performing PAT and NAT. Many enterprise-grade Layer 3 switches include these features to enhance their functionality in edge or distribution roles.

it's A

A = TRUE

A. A router can perform PAT, but a Layer 3 switch cannot. Port Address Translation (PAT) is a form of Network Address Translation (NAT) that allows multiple devices on a local network to be mapped to a single public IP address. Routers typically perform this function to enable multiple devices to share a single public IP address for internet access. While some advanced Layer 3 switches may support limited NAT features, they generally do not perform PAT as routers do.

B. A Layer 3 switch is more efficient than a router. A major difference between a router and a Layer 3 switch is that Layer 3 switches are generally more efficient than routers for performing routing tasks within a LAN. They are optimized for high-speed packet forwarding and are typically used in environments where high performance is required. Routers, on the other hand, are designed for more complex routing tasks and often operate at lower speeds compared to Layer 3 switches. The other options are not accurate: both devices can perform PAT, routers generally have a wider range of routing protocols, and Layer 3 switches do not inherently have faster interfaces compared to routers.

gpt says the correct answer is B