Routers and switches in Intro to Computing - Draw & Build Visually

Draw This - beginner

Draw a diagram showing how a router and a switch connect devices in a small office network. Include at least three devices connected to the switch and show how the switch connects to the router, which connects to the internet.

10 minutes

Hint 1

Hint 2

Hint 3

Hint 4

Hint 5

Grading Criteria

Internet cloud symbol present and connected to router

Router represented as a box connected to internet and switch

Switch represented as a box connected to router and devices

At least three devices connected to the switch

Connections shown clearly with lines or arrows

Solution

Internet

↓

PC1

This diagram shows a simple office network setup.

The Internet connects to the Router. The router directs data between the internet and the local network.

The Switch connects to the router and acts like a traffic controller inside the office, connecting multiple devices.

Three devices (PC1, PC2, and a Printer) connect to the switch, allowing them to communicate with each other and access the internet through the router.

Variations - 2 Challenges

[intermediate] Draw a diagram showing how two switches connect multiple devices and connect to a router that connects to the internet.

[advanced] Draw a diagram showing a router connecting two different networks (like two offices) and switches connecting devices in each network.

Practice

1. What is the main role of a router in a computer network?

easy

A. To provide power to devices

B. To connect devices within the same network

C. To store data permanently

D. To direct data between different networks

Solution

1. Step 1: Understand the function of a router

   A router directs data packets between different networks, like a traffic officer guiding cars to different roads.

2. Step 2: Compare with other devices

   Switches connect devices inside the same network, not between networks. Storage and power are unrelated functions.

3. Final Answer:

   To direct data between different networks -> Option D

4. Quick Check:

   Router = directs between networks [OK]

Hint: Routers connect networks; switches connect devices [OK]

Common Mistakes:

• Confusing routers with switches
• Thinking routers store data
• Assuming routers provide power

2. Which of the following is the correct description of a switch?

easy

A. It directs data between different networks

B. It connects devices within the same network

C. It encrypts data for security

D. It acts as a firewall

Solution

1. Step 1: Identify switch function

   A switch connects devices inside the same network, like a receptionist directing calls within an office.

2. Step 2: Eliminate unrelated functions

   Directing between networks is a router's job; encryption and firewall are security roles, not switch functions.

3. Final Answer:

   It connects devices within the same network -> Option B

4. Quick Check:

   Switch = connects devices in one network [OK]

Hint: Switch = connects devices locally; router = between networks [OK]

Common Mistakes:

• Mixing up router and switch roles
• Thinking switches encrypt data
• Confusing switches with firewalls

3. Consider this scenario: A device sends data to another device on a different network. Which device will handle forwarding the data?

medium

A. Router

B. Switch

C. Modem

D. Hub

Solution

1. Step 1: Identify the network difference

   Data sent between different networks requires a device that can route data across networks.

2. Step 2: Match device to function

   Routers forward data between networks. Switches and hubs work within the same network. Modems connect to the internet but don't route between networks.

3. Final Answer:

   Router -> Option A

4. Quick Check:

   Different networks = router forwards [OK]

Hint: Data between networks uses router, not switch [OK]

Common Mistakes:

• Choosing switch for cross-network data
• Confusing modem with router
• Selecting hub which only broadcasts

4. A network administrator notices that devices within the same network cannot communicate, but devices on different networks can. What is the most likely problem?

medium

A. The switch is not working properly

B. The modem is disconnected

C. The router is malfunctioning

D. The firewall is blocking all traffic

Solution

1. Step 1: Analyze communication issue

   Devices on different networks communicate, so the router works fine. But devices on the same network cannot communicate.

2. Step 2: Identify device responsible for local communication

   Switches connect devices within the same network. If they fail, local communication breaks.

3. Final Answer:

   The switch is not working properly -> Option A

4. Quick Check:

   Same network issue = switch problem [OK]

Hint: Local network issues usually mean switch failure [OK]

Common Mistakes:

• Blaming router for local network problems
• Ignoring switch role in local communication
• Assuming modem affects internal network

5. A company wants to improve its network so that devices inside the office communicate quickly, but also want to connect securely to the internet. Which combination of devices should they use?

hard

A. Only switches, because they connect devices quickly

B. Only routers, because they connect to the internet

C. Both switches for internal connections and routers for internet access

D. Neither; they should use modems only

Solution

1. Step 1: Understand internal communication needs

   Switches connect devices inside the office network quickly and efficiently.

2. Step 2: Understand internet connection needs

   Routers connect the office network to the internet and manage secure data routing.

3. Step 3: Combine device roles

   Using both switches and routers ensures fast internal communication and secure internet access.

4. Final Answer:

   Both switches for internal connections and routers for internet access -> Option C

5. Quick Check:

   Switch + router = fast local + secure internet [OK]

Hint: Use switches inside, routers for internet [OK]

Common Mistakes:

• Using only switches and ignoring internet needs
• Using only routers and ignoring local speed
• Confusing modems with routers and switches