Day 27: Networking Topologies – Star, Bus, Ring, and Mesh Explained | Class 11 - BSEB Class 11-12 Computer Science: 100-Day Bilingual Guide with MCQs, Solutions and Questions

Day 27 – Chapter 4: Networking Topologies

Class 11 Computer Science

Introduction to Networking Topologies (नेटवर्किंग टोपोलॉजी का परिचय)

Networking topology refers to the arrangement of devices and connections in a network. It determines the structure of a network and the flow of data.
नेटवर्किंग टोपोलॉजी नेटवर्क में उपकरणों और कनेक्शनों की व्यवस्था को संदर्भित करती है। यह नेटवर्क की संरचना और डेटा प्रवाह को निर्धारित करती है।

Types of Networking Topologies (नेटवर्किंग टोपोलॉजी के प्रकार)

1. Star Topology (स्टार टोपोलॉजी)

In star topology, all devices are connected to a central device, such as a switch or hub.
स्टार टोपोलॉजी में, सभी डिवाइस एक केंद्रीय डिवाइस, जैसे स्विच या हब से जुड़े होते हैं।

• Advantages:
  • Easy to set up and manage.
  • Failure of one device does not affect others.
• Disadvantages: Central device failure can disrupt the network.

2. Bus Topology (बस टोपोलॉजी)

In bus topology, all devices are connected to a single communication line (bus).
बस टोपोलॉजी में, सभी डिवाइस एक ही संचार रेखा (बस) से जुड़े होते हैं।

• Advantages:
  • Simple and cost-effective to implement.
  • Requires less cable compared to other topologies.
• Disadvantages:
  • Failure of the bus disrupts the entire network.
  • Performance degrades as more devices are added.

3. Ring Topology (रिंग टोपोलॉजी)

In ring topology, devices are connected in a circular loop, and data travels in one direction.
रिंग टोपोलॉजी में, डिवाइस एक गोलाकार लूप में जुड़े होते हैं और डेटा एक दिशा में यात्रा करता है।

• Advantages:
  • Data flows in an orderly manner.
  • Suitable for smaller networks.
• Disadvantages:
  • Failure of one device can affect the entire network.
  • Adding or removing devices can be challenging.

4. Mesh Topology (मेश टोपोलॉजी)

In mesh topology, every device is connected to every other device, ensuring multiple communication paths.
मेश टोपोलॉजी में, हर डिवाइस अन्य सभी डिवाइस से जुड़ा होता है, जो कई संचार पथ सुनिश्चित करता है।

• Advantages:
  • Highly reliable as it provides multiple paths.
  • Failure of one connection does not affect others.
• Disadvantages:
  • Expensive to implement.
  • Complex to manage in larger networks.

Comparison of Topologies (टोपोलॉजी की तुलना)

Topology	Advantages	Disadvantages
Star	Easy to manage; one device failure does not affect others	Central device failure disrupts the network
Bus	Cost-effective; requires less cable	Bus failure disrupts the entire network
Ring	Orderly data flow	Failure of one device affects the network
Mesh	Highly reliable; multiple communication paths	Expensive and complex

Practice Questions (अभ्यास प्रश्न)

Multiple Choice Questions (MCQs)

1. Which topology uses a central device?
   (a) Star | (b) Bus | (c) Ring | (d) Mesh
2. Which topology connects devices in a circular loop?
   (a) Star | (b) Bus | (c) Ring | (d) Mesh
3. Which topology is highly reliable?
   (a) Star | (b) Bus | (c) Ring | (d) Mesh
4. What is the disadvantage of bus topology?
   (a) Easy to implement | (b) Requires less cable | (c) Bus failure disrupts the network | (d) High cost
5. Which topology is suitable for smaller networks?
   (a) Mesh | (b) Ring | (c) Star | (d) Bus
6. Which topology provides multiple communication paths?
   (a) Star | (b) Bus | (c) Ring | (d) Mesh
7. Which topology degrades performance as more devices are added?
   (a) Star | (b) Bus | (c) Mesh | (d) Ring
8. What happens if the central device fails in a star topology?
   (a) Network continues | (b) Network stops functioning | (c) Some devices stop working | (d) None
9. Which topology requires the most cables?
   (a) Star | (b) Bus | (c) Mesh | (d) Ring
10. Which topology is commonly used in LANs?
    (a) Star | (b) Mesh | (c) Bus | (d) Ring

Answers to MCQs:

1: (a), 2: (c), 3: (d), 4: (c), 5: (b), 6: (d), 7: (b), 8: (b), 9: (c), 10: (a)

Short Answer Questions (लघु उत्तरीय प्रश्न)

1. What is networking topology?
   Answer: Networking topology refers to the arrangement of devices and connections in a network.
2. List the four types of topologies.
   Answer: Star, Bus, Ring, Mesh.
3. What is a key disadvantage of bus topology?
   Answer: Failure of the bus disrupts the entire network.
4. Why is mesh topology reliable?
   Answer: It provides multiple communication paths, ensuring network continuity.
5. What is the primary feature of star topology?
   Answer: All devices connect to a central device, such as a switch or hub.

Long Answer Questions (दीर्घ उत्तरीय प्रश्न)

1. Explain the differences between star, bus, ring, and mesh topologies.
2. Discuss the advantages and disadvantages of mesh topology in detail.
3. Which topology is most suitable for a small office network? Justify your answer.