Routers and switches in Intro to Computing - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to identify the device that connects different networks.

Intro to Computing

device = '[1]'  # This device connects multiple networks

Drag options to blanks, or click blank then click option'

ARouter

BSwitch

CHub

DRepeater

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing a switch with a router because both handle data.

Thinking a hub connects different networks.

A Router connects different networks and directs data between them.

2fill in blank

medium

Complete the code to identify the device that connects devices within the same network.

Intro to Computing

device = '[1]'  # This device connects devices in the same network

Drag options to blanks, or click blank then click option'

ARouter

BFirewall

CModem

DSwitch

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing a router with a switch.

Thinking a modem connects devices inside a network.

A Switch connects devices within the same network and forwards data to the correct device.

3fill in blank

hard

Fix the error in the code that assigns the device used to forward data within a local network.

Intro to Computing

local_device = '[1]'  # Device forwarding data inside a local network

Drag options to blanks, or click blank then click option'

ARouter

BSwitch

CGateway

DRepeater

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'Router' which connects different networks, not local devices.

Confusing 'Gateway' with 'Switch'.

The correct device to forward data within a local network is a Switch.

4fill in blank

hard

Fill both blanks to complete the sentence about network devices.

Intro to Computing

A [1] connects different networks, while a [2] connects devices within the same network.

Drag options to blanks, or click blank then click option'

ARouter

BSwitch

CModem

DHub

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping the roles of router and switch.

Choosing modem or hub which do not fit both blanks.

A Router connects different networks, and a Switch connects devices within the same network.

5fill in blank

hard

Fill all three blanks to complete the dictionary describing network devices.

Intro to Computing

network_devices = { '[1]': 'Connects different networks', '[2]': 'Connects devices within the same network', '[3]': 'Amplifies signals to extend network range' }

Drag options to blanks, or click blank then click option'

ARouter

BSwitch

CRepeater

DFirewall

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing repeater with firewall.

Mixing up router and switch roles.

Router connects different networks, Switch connects devices within the same network, and Repeater amplifies signals to extend network range.

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