Uploaded July 2026 | Updated September 2026, 2 weeks ago

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🔹Notes: gatesmashers.com/resources/computer-network-interview-questions

0:00 Q-1: Explain the Responsibilities of All Seven Layers of the OSI Model
2:46 Q-2: Compare the OSI Model with the TCP/IP Model
3:56 Q-3: Explain Encapsulation and De-encapsulation in Computer Networks
6:15 Q-4: Differentiate Between a Hub, Switch and Router
8:27 Q-5: Why Does a Device Need Both a MAC Address and an IP Address?
10:16 Q-6: How Does a Switch Learn and Use MAC Addresses?
11:42 Q-7: How Does ARP Resolve an IP Address into a MAC Address?
13:06 Q-8: What is a Single Point of Failure (SPOF) in a Network?
14:25 Q-9: Compare IPv4 and IPv6
15:55 Q-10: How Does NAT Allow Multiple Private Devices to Access the Internet?
18:29 Q-11: Calculate Network Address, Broadcast Address and Usable Host Addresses
21:26 Q-12: Explain the DHCP DORA Process
23:18 Q-13: How Does a Host Decide Between Direct Delivery and Default Gateway?
24:30 Q-14: How Does Traceroute Discover the Path Followed by a Packet?
25:55 Q-15: What Happens When an IP Packet is Larger Than the Network MTU?
29:16 Q-16: Compare TCP and UDP
30:18 Q-17: Why Does TCP Use a Three-Way Handshake?
31:56 Q-18: How Does TCP Provide Reliable and Ordered Data Delivery?
32:45 Q-19: How Do Ports and Sockets Allow Multiple Applications to Use the Same IP Address?
35:12 Q-20: How Does DNS Resolve a Domain Name into an IP Address?
37:02 Q-21: How Does HTTPS Secure Communication Between a Browser and a Server?
39:26 Q-22: What Happens in the Network After a User Enters a URL?
41:23 Q-23: Wi-Fi Connected but Websites Don't Open — Troubleshooting Steps
43:15 Q-24: How Would You Respond to a Suspected Network Security Breach?
44:57 Q-25: How Would You Protect an Organization Against DDoS Attacks?


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