STATE & FAQ ON TOPOLOGYThis topology description of a network can also include or imply the nature of the data flow through the network. And practical term used in professional training.
💡 Ring topology is the simplest logical topology in terms of data flow, but it is the most complex in terms of physical design. Mesh topology is a network structure where each device is connected directly to multiple other devices, creating multiple communication paths.. If there are n computers, there will be {n × (n–1) ÷ 2} cables in the network. For example, if you have five computers in a mesh network, it will use 5 × (5 – 1) ÷ 2, which equals 10 cables. This complexity is compounded when you add another workstation.
# INTERVIEW PREP GUIDE ABOUT MESH NETWORK TOPOLOGY (PHYSICAL & LOGICAL)
🔹 Why is it called Ring Topology ?
Because the network forms a closed loop or ring structure.
🔹 What are the two types of mesh topology ?
Full Mesh Topology : every device is directly connected to every other device in the network.
Partial Mesh Topology : Only some devices are connected to multiple nodes instead of all devices.
🔹 How do we know mesh topology should be applied in network infrastructure ?
Mesh topology should be used when:
Maximum network reliability is required, Continuous communication is critical, Network redundancy is necessary and Failure tolerance is important.
🔹 Which environments commonly use mesh topology ?
Internet backbone networks, Data centers, Military communication systems, Wireless mesh networks
🔹 Why is mesh topology ideal for mission-critical systems ?
Because multiple paths allow communication even if one link fails.
🔹 What type of network cables are used in mesh topology ?
Fiber optic cables and Ethernet cables.
🔹 How to calculate number of ports required per device ?
Ports = n − 1 {If network has 8 devices (n=8)}
=> Ports = 8 − 1 = 7
=> Each device needs 7 ports.
🔹 What is the main feature of mesh topology ?
Multiple redundant communication paths.
🔹 What happens if one link fails in mesh topology ?
Data can use alternative paths.
🔹 What is the difference between mesh and star topology ?
Mesh : Multiple connections
Star : Single central device
🔹 What is wireless mesh topology ?
A wireless network where nodes communicate with each other dynamically.
🔹 What is mesh routing ?
A routing technique that selects the best path among multiple available links.
🔹 Why does mesh topology provide high reliability ?
Because multiple backup paths exist between devices.
🔹 Why is mesh topology expensive ?
Because it requires many cables and network interfaces.
🔹 Does mesh topology support load balancing ?
Yes, traffic can be distributed across multiple links.
🔹 What is latency behavior in mesh networks ?
Latency can be reduced by selecting shorter paths.
🔹 Can mesh topology support high-speed networks ?
Yes, it is commonly used in high-performance networks.
🔹 How do you calculate network redundancy in mesh topology ?
By analyzing alternative communication paths between nodes.
🔹 How does routing work in mesh networks ?
Routers calculate the best available path dynamically.
🔹 Which routing protocol supports mesh networks ?
open Shotest Path First (OSPF) and Border Gateway Protocol (BGP).
🔹 What is path diversity in mesh topology ?
Multiple independent routes between devices.
🔹 What is network resilience ?
The ability of the network to continue functioning during failures.
🔹 What devices are required to build mesh topology ?
Routers, Switches and Network interfaces.
🔹 What role does fiber optic cable play in mesh networks ?
It provides high-speed backbone connectivity.
🔹 What is internet backbone mesh architecture ?
The global internet core where multiple routers connect redundantly.
🔹 What is wireless mesh networking used for ?
Smart city IoT networks, Disaster recovery communication and Rural internet connectivity.
🔹 How are IP addresses managed in mesh topology ?
Using dynamic routing protocols.
🔹 How do engineers detect failures in mesh networks ?
Using network monitoring systems (SNMP or Telemetry) and routing updates.
🔹 What happens when a router fails in mesh topology ?
Traffic automatically reroutes through other nodes.
🔹 What is link-state monitoring ?
A method where routers track the status of all network links.
🔹 How are faults isolated in mesh networks ?
By analyzing routing tables and path changes.
🔹 Why is mesh topology used in internet backbone networks ?
Because it ensures continuous global connectivity.
🔹 What architecture evolved from mesh topology in data centers ?
Spine-leaf architecture.
🔹 Why is mesh topology useful in military networks ?
Because communication remains operational even if some nodes are destroyed.
🔹 How does traffic flow in mesh topology ?
Traffic follows the optimal route selected by routing protocols.
🔹 How do engineers calculate mesh network bandwidth ?
Based on link speed and routing capacity.
🔹 What is multipath routing ?
Using multiple simultaneous paths for data transmission.
🔹 How does mesh topology improve network availability ?
By eliminating single points of failure.
🔹 What is the future of mesh topology ?
Mesh topology is essential for 5G networks, IoT infrastructure, and resilient internet architectures.
🔹 What is Hybrid Topology in computer networks ?
Hybrid topology is a network architecture that combines two or more different topologies (such as star, ring, bus, mesh, or tree) into a single network structure.
🔹 Why is Hybrid Topology used in modern network infrastructure ?
It allows organizations to combine the advantages of different topologies while minimizing their disadvantages.
🔹 How do you identify that Hybrid Topology is used in an infrastructure ?
If a network contains multiple topology types connected together, such as Star + Bus or Star + Ring, it is Hybrid.
🔹 What are the main components of Hybrid Topology ?
Core layer devices, Distribution switches, Access switches, Backbone links and End devices.
🔹 When should Hybrid Topology be applied in infrastructure ?
Use Hybrid topology when:
Network size is large, Multiple departments exist, Different technologies must be integrated and High scalability is required.
🔹 How do you determine that Hybrid topology is better than Star topology ?
If:
Devices exceed 200–500 nodes, Multiple buildings exist and Redundancy is required.
🔹 What hybrid topology is used in smart city networks ?
Usually:
Ring + Star + Tree
