Why this guide
- Built from the CompTIA Network+ N10-009 exam objectives — 5 weighted domains, no filler
- Subnetting drill section — the skill that separates passers from re-takers
- Troubleshooting methodology — layered approach from physical layer to application layer
- Designed for printing — full guide, two 1-page cheat sheets, and a 1-page pocket card
Who this is for
- Helpdesk and support technicians moving into network engineering roles
- Network technicians configuring switches, routers, and wireless access points
- Systems administrators who need solid networking fundamentals
- Security analysts building a foundation in TCP/IP, VLANs, and network defense
- Students and career-changers seeking a vendor-neutral networking credential
What you'll learn
- Domain 1 — Networking Concepts (23%): OSI and TCP/IP models, IPv4/IPv6 addressing, subnetting, MAC, ARP, TCP/UDP, well-known ports, topologies
- Domain 2 — Network Implementation (20%): Switching, VLANs, trunking, routing protocols, wireless standards, cabling, network devices, virtualization
- Domain 3 — Network Operations (19%): Monitoring, logging, performance, disaster recovery, high availability, documentation, change management
- Domain 4 — Network Security (15%): Threats, vulnerabilities, segmentation, firewalls, ACLs, VPNs, authentication, zero trust, NAC
- Domain 5 — Network Troubleshooting (23%): Methodology, hardware, cabling, IP configuration, DNS/DHCP, wireless, security, performance
- Protocols and services: DNS, DHCP, NAT, PAT, SNMP, NTP, SSH, FTP/SFTP, HTTP/HTTPS, SMTP, IMAP, POP3
- Wireless, cloud, and virtualization: 802.11 standards, WPA2/WPA3, SDN, cloud networking basics, virtual switches
What you're getting
- 6 printable PDFs: cover, course notice, full study guide, two condensed cheat sheets, and an exam-day pocket card.
- Content built from the public syllabus and real test-taker accounts.
- No fake "actual exam" content — honest, source-cited study aids.
"Subnetting shows up everywhere. If you can't do it quickly, the exam feels twice as long."
— paraphrased from public test-taker accounts