Refer to the exhibit. Which product must be positioned where the "?" is placed to connect these different network levels?

Question

Exhibit

Options

• Afirewall
• Bswitch
• Crouter
• Dwireless access port

• B
  4% (2)
• C
  94% (45)
• D
  2% (1)

Explanation

A router is the device that connects different network levels (such as a LAN to a WAN, or separate subnets) because it operates at Layer 3 (Network layer) and makes forwarding decisions based on IP addresses, enabling communication between distinct networks.

Why the distractors are wrong:

• A. Firewall - filters and controls traffic for security purposes but does not primarily serve as the device that interconnects different network levels.
• B. Switch - operates at Layer 2 (Data Link layer) and connects devices within the same network segment, not between different network levels.
• D. Wireless access point - extends a network wirelessly but only provides access to an existing network; it does not route between different network levels.

Memory tip: Think "Router = Roads between cities." Just as roads connect different cities (network levels), routers connect different networks. Switches are like hallways inside a building - useful within, but they can't take you to another city.

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