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4.0 (1 ratings)
Learners Enrolled : 1806
Created by Vishnu Dutt
English
This is a free computer networking interview preparation series designed to help learners understand networking fundamentals from scratch. In this course, real networking interview questions are explained deeply using simple language, real world examples, and practical network behavior.
In this course, I have explained 15 most important networking interview questions in 12 hours and 28 minutes, with deep clarity, real life examples, stories, and step by step reasoning.
Every question is explained from scratch so that even beginners can follow easily. At the same time, experienced network engineers will also understand the depth behind every concept.
This course does not focus on shortcuts.
It focuses on thinking like a network engineer.
The 15 questions you will master:
Fundamental Networking Concepts:
1. Why do we need subnet mask along with IP address? Understand the real purpose of subnet masks and how they help networks function efficiently. Learn to explain this clearly to any interviewer.
2. How do two computers talk when they are in the same network? Dive deep into Layer- 2 communication, ARP protocol, MAC addresses, and the actual packet flow between devices on the same subnet.
3. How do two computers talk when they are in different networks? Master routing fundamentals, default gateways, and how packets travel across network boundaries. This is critical for any networking role.
4. How do two computers avoid loops in Layer 2 networks? Learn Spanning Tree Protocol (STP) in detail, understand why loops are dangerous, and how switches prevent them automatically. For more detailed understanding, we have created a complete course on switching https://www.bridgewhy.com/courses/Switching-Fundamentals-65487ee3e4b0d95f6c7bc73d?srsltid=AfmBOooGJco1nYsWcGNn8IuKjcmftttusScZh45q0L6feZ-NKQ_Barrv
Protocol and Architecture Understanding:
5. Why OSI model if we are already running TCP/IP model everywhere? Finally understand the relationship between these models and why learning OSI still matters for modern networks.
6. Why MAC address if we already have IP address everywhere? Discover the fundamental difference between Layer 2 and Layer 3 addressing and why we need both for networks to function.
7. Network troubleshooting using traceroute Learn how to use traceroute effectively, understand its output, and diagnose network problems like a professional engineer. For deeper packet level analysis, you can explore our Wireshark from Scratch course https://www.bridgewhy.com/courses/Wireshark-from-Scratch--1743086443817-67e5636bf1e30321f8bdcefe?srsltid=AfmBOorhXTTfkCrDC_yCRDX5bpWaw1v1sY_OUwlicJb3GhZXMENXr_xr
TCP/IP Deep Dive:
8. What is the significance of TCP Sequence number and Acknowledgement? Master TCP reliability mechanisms, understand three way handshake, and explain how TCP guarantees delivery.
9. MSS is the concept of TCP layer. So what is its relationship with MTU at layer 2? Understand the connection between Maximum Segment Size and Maximum Transmission Unit, and why this matters for network performance.
Real World Applications:
10. Why DNS is so important for internet Learn how DNS works: why it is called the phonebook of the internet, and what happens when DNS fails.
11. What happens when you write www.google.com on your computer: Walk through the complete journey from typing a URL to seeing a webpage. This question tests your end to end networking knowledge.
12. How would you connect to internet using static routing: Understand routing fundamentals, static routes, and how small networks connect to the internet without dynamic routing protocols.
Advanced Routing and Design:
13. Is OSPF a link state or distance vector protocol. How it avoids loops in a network? Master OSPF concepts, understand link state routing, and learn how OSPF prevents routing loops.
14. Can you design a network of a small office. If yes, what would be your approach? Apply everything you learned to design a real office network from scratch. Understand the thinking process behind network design.
15. Troubleshooting network scenario simulations Practice real troubleshooting scenarios and learn the systematic approach that experienced engineers use.
Who This Course Is For
This course is perfect for you if you are:
Teaching Style
If networking is a long journey, this course helps you walk the most important part with confidence. After that, you will be able to run on your own.
This course is a complete computer networking interview preparation program. It focuses on explaining networking fundamentals from scratch using real interview questions. The goal is to help learners understand how networking actually works and explain answers confidently in interviews.
Yes. This course is designed from scratch. Even if you are new to computer networking, the concepts are explained step by step in very simple language. No prior deep networking experience is required.
Yes. Many experienced engineers struggle to explain concepts clearly in interviews. This course helps experienced professionals strengthen their fundamentals and improve the way they explain networking concepts. But yes, we have created many focussed and Detailed Courses on computer networking which are available on our website.
Yes. This course covers many core CCNA level concepts such as IP addressing, subnet mask, OSI model, TCP IP, DNS, routing, switching, OSPF, and troubleshooting. It is very helpful for CCNA interview preparation. If you really want to go further deeper, there is a free course on CCNA available
This course covers 15 real world networking interview questions. These include how computers communicate in same network and different networks, why subnet mask is required, why MAC address exists, how DNS works, how traceroute works, how TCP ensures reliability, how OSPF avoids loops, and how to design a small office network.
Yes. Network troubleshooting is a key part of this course. You will learn troubleshooting using traceroute, routing behavior, packet flow understanding, and real network simulation scenarios. Along with troubleshooting this course also talk about network design of a small network of 100 people. We have created a Campus Network Design course also if you want to learn deep about network design.
This course focuses on practical understanding. Concepts are explained using real network behavior, stories, and examples. The emphasis is on understanding the why behind every concept, not just memorizing theory.
The total duration of this course is 12 hours and 28 minutes. The content is spread across 15 detailed interview questions explained deeply.
Yes. If you understand the fundamentals and the logic behind networking, interviews become much easier. This course is designed to build that confidence by improving clarity and structured thinking. The more your repeat the videos, the more you will be confident during intrview.
This course is ideal for freshers, networking students, CCNA aspirants, network engineers with one to ten years of experience, and anyone who wants strong networking fundamentals for interviews.
Most courses focus on shortcuts and memorized answers. This course focuses on building strong fundamentals and clear thinking. It teaches how networking works internally so that you can answer any related interview question confidently. In case you want to develop solid fundamentals in computer networking, we have created Many Courses abosolutely from scratch.
