W Code - Pattern-Based DSA Learning Platform

Bhanu Bisht

Computer Network Interview Questions

Company-wise questions from Cisco, Zscaler, Juniper & more

Comprehensive collection of networking interview questions asked at top networking and security companies. Click on any question to reveal the answer.

🔷

Cisco

6 Questions

🔒

Zscaler

5 Questions

🌿

Juniper Networks

3 Questions

🌐

General Networking

5 Questions

🎯 General Interview Tips

Always explain concepts with real-world examples

Draw diagrams when explaining complex topics (OSI, TCP handshake)

Know CLI commands for common tools (ping, traceroute, netstat, tcpdump)

Be ready to troubleshoot scenarios (why can't users access a website?)

Understand trade-offs (TCP vs UDP, Hub vs Switch)