Multiple Choice Questions on Routers and Switches for High School CS

📚 Quick Study Guide: Routers & Switches Basics

• 🧠 Routers: Operate at Layer 3 (Network Layer) of the OSI model. They connect different networks (e.g., your home network to the internet).
• 🗺️ Function of Routers: Forward data packets between different IP networks based on IP addresses. They use routing tables to determine the best path.
• 📡 Switches: Operate at Layer 2 (Data Link Layer) of the OSI model. They connect devices within the same local area network (LAN).
• 🔗 Function of Switches: Forward data frames to specific devices based on MAC addresses. They learn MAC addresses and store them in their CAM (Content Addressable Memory) table.
• 🌐 Key Difference: Routers connect networks (inter-network communication); Switches connect devices within a single network (intra-network communication).
• 🚦 Packet vs. Frame: Routers handle IP packets; Switches handle Ethernet frames.
• 🔒 Security Note: Routers often include firewall capabilities to protect networks. Switches enhance network efficiency by reducing collisions.

📝 Practice Quiz: Routers & Switches

1. Which OSI model layer do routers primarily operate at?

1. Data Link Layer
2. Physical Layer
3. Network Layer
4. Transport Layer

2. What is the primary function of a network switch?

1. To connect different networks together.
2. To forward data packets based on IP addresses.
3. To connect multiple devices within the same local area network (LAN).
4. To translate domain names into IP addresses.

3. A router uses which type of address to make forwarding decisions between different networks?

1. MAC address
2. IP address
3. Port address
4. Hardware address

4. What does a switch use to direct data frames to the correct device on a LAN?

1. Routing table
2. Domain Name System (DNS)
3. MAC address table
4. Default gateway

5. Which of the following statements best describes a key difference between a router and a switch?

1. Routers operate at Layer 2, while switches operate at Layer 3.
2. Routers connect devices within a single network, while switches connect different networks.
3. Routers forward packets between different IP networks, while switches forward frames within a single LAN.
4. Routers are for wireless connections, and switches are for wired connections.

6. If you want to connect your home network to the internet, which device is essential for this connection?

1. Hub
2. Switch
3. Repeater
4. Router

7. A device that reduces network collisions and improves network efficiency by sending data only to the intended recipient is a:

1. Hub
2. Router
3. Switch
4. Modem