CompTIA Network+ (N10-008) — Question 817

Winch of the following is a major difference between a router and a Layer 3 switch?

Answer options

• A. A router can perform PAT, but a Layer 3 switch cannot.
• B. A Layer 3 switch is more efficient than a router.
• C. A router uses higher speed interfaces than a Layer 3 switch.
• D. A Layer 3 switch can run more routing protocols than a router.

Correct answer: A

Explanation

The correct answer is A because routers are specifically designed to perform Port Address Translation (PAT), which is not a capability of Layer 3 switches. Options B, C, and D are incorrect as they either misrepresent the efficiency and capabilities of Layer 3 switches compared to routers or inaccurately describe their operational characteristics.