Overview
The first week of the 90 Days of Cybersecurity challenge focuses on building a solid foundation in networking concepts aligned with CompTIA Network+ certification (N10-009). Understanding networking is crucial for any cybersecurity professional, as it forms the backbone of how systems communicate and where many security vulnerabilities exist.Learning Path
Day 1: Networking Fundamentals
Start with the basics of networking, including the OSI model, TCP/IP, and network topologies.
Primary Resource
Professor Messer's Network+ (N10-009) Course
Comprehensive free video series covering all Network+ exam objectives. Professor Messer is widely regarded as one of the best resources for CompTIA certifications.
Study Tips
Practice is Essential: Don’t just watch the videos passively. After each major topic, complete practice questions or exercises to reinforce your understanding. Consider using:
- CompTIA Network+ practice exams
- Packet Tracer simulations
- Network diagram exercises
- Subnetting calculators and practice tools
Key Topics to Master
By the end of Day 7, you should be comfortable with:- OSI Model & TCP/IP: Understanding how data flows through network layers
- IP Addressing: IPv4, IPv6, subnetting, and address allocation
- Network Devices: Routers, switches, access points, and their functions
- Protocols: TCP, UDP, HTTP, HTTPS, DNS, DHCP, and more
- Network Security: Basic security concepts, VPNs, and access control
- Troubleshooting: Using tools like ping, traceroute, nslookup, and ipconfig
Additional Resources
CompTIA Network+ Certification
Official certification information and exam objectives
Network+ Practice Questions
Free practice questions from Professor Messer