Which statement about LTWD and RTDW is true?

Which statement about LTWD and RTDW is true?

• A. LTWD uses a Layer 3 switch that can function as a router
• B. RTDW requires a Layer 3 switch that can function as a router
• C. LTWD uses a separate router for external networks
• D. RTDW uses a Layer 2 switch only

Answer: (B)

Routing is required when data must move between different networks, such as reaching external systems or services outside the local LAN. Real-Time Data Weather workflows involve sharing and delivering data across network boundaries, so the design needs devices that can route traffic in addition to switching. A Layer 3 switch provides both switching and routing in one device, enabling inter-VLAN routing and direct paths for data to reach external networks without needing a separate router. That combination matches RTDW’s requirement to handle traffic across different networks efficiently and with low latency, which is why this option is the best fit. In contrast, a Layer 2 switch only forwards traffic within the same VLAN and cannot route between networks, so it wouldn’t satisfy RTDW’s need for inter-network connectivity. The idea that LTWD uses a Layer 3 switch isn’t aligned with RTDW’s routing requirement, and while you could place a separate router in the path, the statement emphasizes a device that can function as a router (which a Layer 3 switch can), making it the correct emphasis. The option that RTDW uses a Layer 2 switch only would be incorrect for the same routing reason.

Routing is required when data must move between different networks, such as reaching external systems or services outside the local LAN. Real-Time Data Weather workflows involve sharing and delivering data across network boundaries, so the design needs devices that can route traffic in addition to switching.

A Layer 3 switch provides both switching and routing in one device, enabling inter-VLAN routing and direct paths for data to reach external networks without needing a separate router. That combination matches RTDW’s requirement to handle traffic across different networks efficiently and with low latency, which is why this option is the best fit.

In contrast, a Layer 2 switch only forwards traffic within the same VLAN and cannot route between networks, so it wouldn’t satisfy RTDW’s need for inter-network connectivity. The idea that LTWD uses a Layer 3 switch isn’t aligned with RTDW’s routing requirement, and while you could place a separate router in the path, the statement emphasizes a device that can function as a router (which a Layer 3 switch can), making it the correct emphasis. The option that RTDW uses a Layer 2 switch only would be incorrect for the same routing reason.