Understanding Networks – Long Answer Questions
Medium Level (Application & Explanation)
Q1. What is a network? Explain with day-to-day examples and relate it to computer networks.
Answer:
- A network is a system of connected elements that share information.
- In daily life, a road network connects cities for travel.
- A telecommunication network connects phones for voice and data.
- A banking network connects ATMs and branches for services.
- A broadcast network sends TV and radio programs to many people.
- In computing, a computer network connects devices to share data and resources.
Q2. Define a computer network and explain its main components with examples.
Answer:
- A computer network links computers and devices to share resources.
- The sender starts the communication. Example: your computer sending an email.
- The communication medium is the path. Example: cables, Wi‑Fi, or Bluetooth.
- The receiver gets the data. Example: your friend’s computer receiving the email.
- Devices like printers and scanners can also be part of the network.
- This setup helps share files, print, and access software from one place.
Q3. What is a LAN? How is it different from the Internet? Give simple examples.
Answer:
- A Local Area Network (LAN) connects computers in a small area.
- Example: a school, computer lab, or office floor.
- The Internet is the largest network connecting computers worldwide.
- A LAN is private and used by a limited group.
- The Internet is public and connects millions of networks.
- Example: your school LAN shares a printer, while the Internet lets you browse websites.
Q4. Why do organizations need networking? Explain using the central server idea.
Answer:
- Networking allows efficient data sharing among users.
- Without a network, data gets duplicated on many devices.
- A central server stores one main copy of files.
- Employees can access it from any place, even globally.
- This reduces redundancy, saves storage, and cuts costs.
- It also makes updates easier and access faster.
Q5. Explain five advantages of networking for a school or office with examples.
Answer:
- Hardware sharing saves money. One printer serves many computers.
- Software sharing reduces effort. One installation works for all via a server.
- Efficiency improves. Updates happen at a central point.
- Reduces redundancy. One central copy avoids many duplicates.
- Time and paper saving. Files are shared electronically, not printed.
- Internet sharing cuts cost. One connection serves many users securely.
High Complexity (Analysis & Scenario-Based)
Q6. Scenario: An office has 10 computers and one printer. How can they share the printer effectively? Identify sender, medium, and receiver.
Answer:
- Connect the printer to one computer and share it on the LAN.
- Each user computer becomes the sender when it sends a print job.
- The communication medium is the network (cables or Wi‑Fi).
- The receiver is the computer with the printer, then the printer itself.
- This setup cuts cost, avoids buying 10 printers, and reduces clutter.
- It also creates a print queue, so tasks are handled orderly and fast.
Q7. A company has branches in different cities. Explain how central storage reduces redundancy and improves security.
Answer:
- Store all files on a central server with controlled access.
- Staff in all branches access the same latest files.
- This removes multiple copies of the same data on many PCs.
- Backups and updates happen in one place, so work is reliable.
- Security is stronger with central permissions and monitoring.
- It saves storage, prevents conflicts, and makes collaboration easy.
Q8. Your lab needs a small LAN. Compare cables, Wi‑Fi, and Bluetooth. Choose a suitable mix and justify.
Answer:
- Cables give stable, fast, and reliable connections. Good for desktops.
- Wi‑Fi gives flexibility and mobility. Good for laptops and phones.
- Bluetooth is for very short range and small files. Not for full LANs.
- A mixed setup works well: cables for fixed PCs, Wi‑Fi for mobile devices.
- This balances speed, cost, and ease of use.
- It matches class needs from the content: mediums can be cables, Wi‑Fi, or Bluetooth.
Q9. A school wants to save paper and time. Propose a networking plan using shared resources.
Answer:
- Use a LAN with shared folders for notes and assignments.
- Set up email or a central server for file exchange.
- Install software once on the server for all labs.
- Share printers to limit printing to only needed cases.
- Do central updates to save time across all systems.
- Share a single Internet connection with secure access controls.
Q10. Without networking, each device keeps its own files. Analyze the problems and show how networking fixes them.
Answer:
- Many duplicate copies cause confusion and waste storage.
- Files become out of date, and different users have different versions.
- Sharing by pen drives is slow and unsafe.
- With a network, a central server keeps one master copy.
- Users access and update it over the medium (Wi‑Fi or cables).
- This brings consistency, saves time, and improves security.