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Leetcode

• Course: Algorithms and Data Structures for Beginners
• Channel: Neetcode

Networking

• Course: Free CCNA v1.1 200-301 | Complete Course 2025
• Author: Jeremy's IT Lab

Operating Systems

• Course: Operating Systems
• Author: Mythili Vutukuru

Linux

• Course: Red Hat Certified System Administrator(RHCSA)
• Author: Aaron Lockhart

System Design

• Course: System Design for Beginners
• Channel: Neetcode