Network Devices MCQs | 25 Practice Questions with Answers | CBSE Class 12 Informatics Practices (IP)
Class 12 · Informatics Practices
Network Devices MCQs (25 Questions)
Practice these multiple-choice questions to strengthen your understanding of Network Devices. Click Show Answer to reveal the correct answer and explanation.
Q1. What is the primary function of a network device?
A. To create documents
B. To connect devices and facilitate communication in a network
C. To install software
D. To store databases
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Answer: B. To connect devices and facilitate communication in a network
Explanation: Network devices connect computers and other devices, enabling data communication and resource sharing.
Q2. Which device converts digital signals into analog signals and vice versa?
A. Router
B. Modem
C. Switch
D. Hub
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Answer: B. Modem
Explanation: A modem (Modulator-Demodulator) converts digital signals to analog signals and analog signals back to digital.
Q3. The full form of MODEM is:
A. Modified Demodulator
B. Modulator-Demodulator
C. Multiple Data Manager
D. Modular Device Manager
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Answer: B. Modulator-Demodulator
Explanation: A modem performs both modulation and demodulation.
Q4. Which network device broadcasts incoming data to all connected devices?
A. Switch
B. Router
C. Hub
D. Gateway
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Answer: C. Hub
Explanation: A hub sends incoming data to every connected device, regardless of the intended recipient.
Q5. Which device forwards data only to the intended destination device?
A. Hub
B. Switch
C. Modem
D. Repeater
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Answer: B. Switch
Explanation: A switch uses MAC addresses to forward data only to the intended device, improving network efficiency.
Q6. Which network device regenerates weak signals to extend the communication distance?
A. Router
B. Gateway
C. Repeater
D. Switch
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Answer: C. Repeater
Explanation: A repeater amplifies or regenerates signals to overcome signal loss.
Q7. Which device connects two or more different networks?
A. Hub
B. Router
C. Repeater
D. Modem
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Answer: B. Router
Explanation: A router forwards data packets between different networks.
Q8. Which device selects the best path for transmitting data packets?
A. Switch
B. Router
C. Hub
D. Repeater
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Answer: B. Router
Explanation: Routers determine the most efficient route for data to travel between networks.
Q9. Which network device connects two networks using different communication protocols?
A. Gateway
B. Switch
C. Hub
D. Repeater
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Answer: A. Gateway
Explanation: A gateway translates between different protocols, allowing dissimilar networks to communicate.
Q10. Which device is often called the "protocol converter"?
A. Router
B. Hub
C. Gateway
D. Switch
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Answer: C. Gateway
Explanation: A gateway converts data between networks using different communication protocols.
Q11. Which network device is considered an intelligent alternative to a hub?
A. Repeater
B. Switch
C. Modem
D. Gateway
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Answer: B. Switch
Explanation: Unlike a hub, a switch forwards data only to the intended destination.
Q12. Which device helps increase the effective length of a network cable?
A. Router
B. Repeater
C. Gateway
D. Switch
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Answer: B. Repeater
Explanation: Repeaters regenerate weak signals, allowing communication over longer distances.
Q13. Which network device is commonly provided by an Internet Service Provider (ISP) for Internet connectivity?
A. Hub
B. Modem
C. Repeater
D. Switch
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Answer: B. Modem
Explanation: ISPs typically provide a modem to connect a user's network to the Internet.
Q14. Which statement about a Hub is TRUE?
A. It sends data only to the destination device.
B. It broadcasts data to all connected devices.
C. It selects the shortest path.
D. It converts communication protocols.
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Answer: B.
Explanation: A hub broadcasts incoming data to every connected device.
Q15. Which statement correctly describes a Router?
A. It regenerates weak signals.
B. It forwards data between different networks.
C. It converts analog signals to digital signals only.
D. It broadcasts data to every device.
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Answer: B.
Explanation: A router connects multiple networks and forwards data packets using the best available route.
Q16. A school wants to connect all computers in a computer lab efficiently so that data is sent only to the intended computer. Which device should be used?
A. Hub
B. Switch
C. Repeater
D. Modem
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Answer: B. Switch
Explanation: A switch forwards data only to the intended destination, reducing unnecessary network traffic.
Q17. Which device should be installed if network signals become weak over long distances?
A. Gateway
B. Router
C. Repeater
D. Switch
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Answer: C. Repeater
Explanation: A repeater regenerates weak signals and extends the communication distance.
Q18. Which network device is responsible for connecting a home network to the Internet through an Internet Service Provider (ISP)?
A. Hub
B. Modem
C. Switch
D. Repeater
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Answer: B. Modem
Explanation: A modem establishes communication between the user's network and the ISP.
Q19. Which statement correctly differentiates a Hub from a Switch?
A. A Hub broadcasts data to all devices.
B. A Switch forwards data only to the destination device.
C. A Switch provides better network performance than a Hub.
D. All of these.
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Answer: D. All of these.
Explanation: Unlike a hub, a switch intelligently forwards data only to the intended recipient, making communication faster and more efficient.
Q20. Which statement correctly differentiates a Router from a Gateway?
A. A Router connects different networks.
B. A Gateway connects networks using different communication protocols.
C. A Gateway performs protocol conversion.
D. All of these.
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Answer: D. All of these.
Explanation: A router forwards packets between networks, whereas a gateway also translates between different protocols.
Q21. A company has two networks that use different communication protocols. Which device is required to enable communication between them?
A. Hub
B. Gateway
C. Switch
D. Repeater
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Answer: B. Gateway
Explanation: A gateway translates data between different protocols, enabling communication between dissimilar networks.
Q22. Which statement about network devices is TRUE?
A. A Modem converts digital and analog signals.
B. A Router selects the best path for data transmission.
C. A Repeater strengthens weak signals.
D. All of these.
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Answer: D. All of these.
Explanation: Each network device performs a specific role to ensure reliable communication within and between networks.
Q23. Which of the following is NOT a network device included in the CBSE Class 12 IP syllabus?
A. Modem
B. Router
C. Firewall
D. Gateway
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Answer: C. Firewall
Explanation: The prescribed CBSE syllabus covers Modem, Hub, Switch, Repeater, Router, and Gateway. Firewall is not included in this unit.
Q24. Which statement correctly matches the device with its function?
A. Hub → Broadcasts data to all connected devices.
B. Switch → Sends data only to the destination device.
C. Repeater → Regenerates weak signals.
D. All of these.
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Answer: D. All of these.
Explanation: Each listed device has been correctly matched with its primary function.
Q25. Which statement best summarizes Network Devices?
A. Different network devices perform different communication functions.
B. Choosing the correct device improves network performance.
C. Modem, Hub, Switch, Repeater, Router, and Gateway each have unique roles.
D. All of these.
Show Answer
Answer: D. All of these.
Explanation: Network devices are designed for specific purposes such as signal conversion, forwarding, routing, protocol conversion, and signal regeneration, making networks efficient and reliable.
Answer Key
| Q.No. | Answer | Q.No. | Answer | Q.No. | Answer |
|---|---|---|---|---|---|
| 1 | B | 11 | B | 21 | B |
| 2 | B | 12 | B | 22 | D |
| 3 | B | 13 | B | 23 | C |
| 4 | C | 14 | B | 24 | D |
| 5 | B | 15 | B | 25 | D |
| 6 | C | 16 | B | ||
| 7 | B | 17 | C | ||
| 8 | B | 18 | B | ||
| 9 | A | 19 | D | ||
| 10 | C | 20 | D |
Practice Tips
- Remember the purpose of each network device:
- Modem → Converts digital signals to analog signals and vice versa.
- Hub → Broadcasts data to all connected devices.
- Switch → Sends data only to the intended destination device.
- Repeater → Regenerates weak signals to extend communication distance.
- Router → Connects different networks and selects the best path for data.
- Gateway → Connects networks using different communication protocols.
- Important comparisons:
- Hub vs Switch
- Hub → Broadcasts data to all devices.
- Switch → Sends data only to the destination device.
- Router vs Gateway
- Router → Connects networks.
- Gateway → Connects networks with different protocols.
- Modem vs Router
- Modem → Connects to the ISP by converting signals.
- Router → Distributes the network connection to multiple devices.
- Hub vs Switch
- Common real-life examples:
- Home Internet → Modem + Router
- School Computer Lab → Switch
- Long-distance Network Cable → Repeater
- Office Networks → Router
- Different Network Protocols → Gateway
- CBSE Tip: Competency-based questions often describe a real-world networking scenario and ask you to identify the correct device. Focus on the function of each device rather than only memorizing its definition.