CompTIA Network+ (N10-009) – Full Overview

CompTIA Network+ (N10-009) – Full Overview

CompTIA Network+ (N10-009) is a vendor-neutral certification that validates core networking knowledge and skills required for modern IT roles.

It focuses on network design, implementation, troubleshooting, security, and operations.

🎯 Who Network+ Is For

• IT Support / Help Desk
• Network Technician
• Junior Network Engineer
• SOC / NOC Analysts
• DevOps & Cloud beginners
• Cybersecurity students

📝 Exam Details

• Exam Code: N10-009
• Questions: Up to 90
• Time: 90 minutes
• Passing Score: 720 / 900
• Question Types:
• Multiple choice
• Performance-Based Questions (PBQs)

📘 N10-009 Exam Domains

1️⃣ Networking Concepts (23%)

• OSI & TCP/IP models
• Ethernet standards
• Cables & connectors
• IPv4 / IPv6 addressing
• Subnetting
• Ports & protocols
• Network topologies

2️⃣ Network Implementation (20%)

• Switching & routing concepts
• Wireless standards (802.11 a/b/g/n/ac/ax)
• VLANs & trunking
• DHCP, DNS
• WAN technologies
• Network device configuration

3️⃣ Network Operations (19%)

• Monitoring & performance metrics
• High availability
• Disaster recovery
• Network documentation
• Change management
• Network optimization

4️⃣ Network Security (20%)

• Firewalls
• ACLs
• VPNs
• IDS / IPS
• Network attacks (DoS, MITM, spoofing)
• Authentication methods
• Zero Trust basics

5️⃣ Network Troubleshooting (18%)

• Troubleshooting methodology
• Connectivity issues
• Performance bottlenecks
• Wireless problems
• Cable & hardware faults
• CLI tools (ping, tracert, ipconfig, netstat)

🧪 Key Topics You MUST Know

✔ Subnetting (very important)

✔ OSI model (layer functions & troubleshooting)

✔ TCP vs UDP

✔ Common ports (80, 443, 22, 53, 3389)

✔ VLANs & routing

✔ Wi-Fi security (WPA2/WPA3)

✔ Network attacks & defenses

🛠️ Tools & Commands

• ping, tracert, nslookup
• ipconfig, ifconfig, ip
• netstat, ss
• Wi-Fi analyzers
• Packet sniffers (Wireshark – basics)
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