Introduction
The CompTIA Network+ (N10-009) is the vendor-neutral networking certification IT professionals use as their foundation for everything from cybersecurity to cloud to network engineering. It validates that you understand modern networking technologies, configurations, troubleshooting, and security.
The N10-009 (released June 2024, current through at least mid-2027) updates N10-008 with expanded coverage of cloud, SDN/SD-WAN, zero trust networking, and modern wireless. If you’re pursuing Security+, CCNA, or cloud certifications, Network+ is the most efficient way to build the networking foundation.
This guide covers the N10-009 objectives, exam format, costs, and a realistic 8–12 week prep plan.
Who Network+ Is For
Network+ is the right exam if you:
- Are an IT support professional, sysadmin, or helpdesk engineer moving toward network or security roles
- Need a vendor-neutral networking credential before tackling Security+, CCNA, or cloud certs
- Are pursuing US federal / DoD cybersecurity roles (Network+ is 8570 / 8140 approved)
- Have ~1 year of general IT experience
- Want a networking credential that complements multi-cloud environments
There are no formal prerequisites. CompTIA recommends CompTIA A+ and 9–12 months of IT experience.
Network+ N10-009 Exam Specifications
| Attribute | Detail |
|---|---|
| Exam code | N10-009 |
| Title | CompTIA Network+ |
| Format | Multi-choice, multi-select, Performance-Based Questions (PBQs) |
| Questions | Up to 90 |
| Duration | 90 minutes |
| Passing score | 720 / 900 (~80%) |
| Cost | $369 USD |
| Languages | English, Japanese, Portuguese, Spanish, Thai, Vietnamese, German |
| Delivery | Pearson VUE in person or online |
| Validity | 3 years (CE renewal via CEUs, higher cert, or retake) |
| Prerequisites | None official; A+ recommended |
Network+ N10-009 Domains and Weights
| Domain | Weight |
|---|---|
| Networking Concepts | 23% |
| Network Implementation | 20% |
| Network Operations | 19% |
| Network Security | 14% |
| Network Troubleshooting | 24% |
Compared to N10-008, N10-009 reduces hardware-specific content and expands cloud, zero trust, and IaC. Troubleshooting is now the single largest domain.
Domain 1: Networking Concepts (23%)
- OSI model: layers 1–7 with examples of devices and protocols at each
- Network topologies: mesh, star, ring, bus, hybrid; spine-leaf for data centers
- IPv4 and IPv6 addressing: subnetting, CIDR, supernetting, private ranges, link-local, unique local
- TCP/UDP and common port numbers (memorize the top 30)
- Network types: PAN, LAN, MAN, WAN, SAN, CAN, WLAN
- Cloud concepts in networking context: VPCs, transit gateways, virtual networking
- SDN and SD-WAN at conceptual level
Domain 2: Network Implementation (20%)
- Switching: VLANs, trunking, spanning tree (STP/RSTP), link aggregation
- Routing: static, dynamic (OSPF, BGP, EIGRP, RIP basics)
- Wireless: 802.11 standards (a/b/g/n/ac/ax/be), 2.4 vs. 5 vs. 6 GHz, channel planning, WPA2/WPA3
- Network appliances: firewalls, IDS/IPS, proxies, load balancers, VPN concentrators, WAF
- IPv4-to-IPv6 transition: dual stack, tunneling, NAT64
Domain 3: Network Operations (19%)
- Documentation: physical and logical diagrams, baselines, IP schemes, change management
- Performance metrics: throughput, latency, jitter, packet loss
- Network monitoring: SNMP, NetFlow / sFlow, syslog, SIEM integration
- DR and BC: RTO, RPO, MTTR, MTBF, hot/warm/cold sites
- IaC for networking: Terraform, Ansible automation
Domain 4: Network Security (14%)
- Confidentiality, integrity, availability in networking context
- Zero Trust Network Access (ZTNA): identity-aware, microsegmentation
- Common attacks: DoS/DDoS, ARP poisoning, on-path, DNS poisoning, rogue AP
- Defense: firewalls (stateful, NGFW), 802.1X authentication, port security, MAC filtering
- Hardening: default credentials, unused ports, patching
Domain 5: Network Troubleshooting (24%) — Largest Domain
- Troubleshooting methodology: CompTIA’s 7-step model
- Common tools:
ping,traceroute/tracert,ipconfig/ifconfig/ip,netstat/ss,nslookup/dig,arp,mtr,tcpdump, packet captures - Cabling: crossover vs. straight-through, fiber types (single-mode vs. multi-mode), connector types (LC, SC, ST, MTP/MPO)
- Wireless troubleshooting: signal strength, interference, channel overlap
- Software-defined troubleshooting: SDN controllers, automated remediation
Performance-Based Questions
Network+ includes PBQs — typically 3–6 simulations at the start of the exam. Expect:
- Drag-and-drop devices into a topology diagram
- Configure VLANs on a virtual switch
- Identify packet capture details
- Subnetting calculators given a CIDR
Allocate ~10 minutes per PBQ. Flag and return if you’re stuck — don’t burn 25 minutes on one.
What Makes Network+ Hard
- Subnetting must be automatic. Several PBQs and MCQs require you to subnet quickly in your head.
- Port number memorization. Top 30 well-known ports must be reflexive.
- Wide breadth. From physical layer (cables, connectors) to L7 (HTTPS, DNS) to cloud overlay networks.
- CompTIA’s troubleshooting methodology. You must know the seven steps in order; questions test this directly.
- 80% pass threshold with PBQ time pressure leaves narrow margin.
Subnetting and Ports — The Two Things You Must Memorize
Subnetting: be able to answer “how many usable hosts in /27?”, “what’s the broadcast of 10.0.5.64/26?”, “how many /28 subnets in /24?” — without a calculator, in under 30 seconds.
Top ports to memorize:
| Port | Protocol |
|---|---|
| 20, 21 | FTP |
| 22 | SSH, SCP, SFTP |
| 23 | Telnet |
| 25 | SMTP |
| 53 | DNS |
| 67/68 | DHCP |
| 69 | TFTP |
| 80 | HTTP |
| 110 | POP3 |
| 123 | NTP |
| 143 | IMAP |
| 161/162 | SNMP / SNMP traps |
| 389 | LDAP |
| 443 | HTTPS |
| 445 | SMB |
| 465/587 | SMTPS / SMTP submission |
| 636 | LDAPS |
| 993/995 | IMAPS / POP3S |
| 1433/3306/5432 | SQL Server / MySQL / PostgreSQL |
| 3389 | RDP |
| 5060/5061 | SIP / SIP-TLS |
Recommended 8–12 Week Study Plan
Weeks 1–2: OSI, TCP/IP, addressing
- OSI vs. TCP/IP models
- IPv4 subnetting drilled daily
- IPv6 fundamentals
- Common protocols and ports
Weeks 3–4: Switching, routing, wireless
- VLANs, trunking, STP
- Routing protocols overview
- 802.11 standards and channel planning
- WPA2/WPA3 security
Weeks 5–6: Network implementation
- Network appliances
- Cloud networking (VPCs, transit gateways)
- SDN and SD-WAN concepts
Weeks 7–8: Operations and security
- Monitoring tools (SNMP, NetFlow, syslog)
- Zero trust principles
- Common attacks and defenses
- Documentation and change management
Weeks 9–10: Troubleshooting (largest domain)
- CompTIA 7-step methodology
- CLI tools: ping, traceroute, ip/ifconfig, netstat, nslookup/dig, tcpdump
- Wireshark fundamentals
- Cabling troubleshooting
Weeks 11–12: Mock exams and PBQ practice
- 3+ full-length mocks from Sailor.sh’s Network+ N10-009 mock exam bundle
- Dedicated subnetting and PBQ practice
- Targeted re-study on weak domains
Hands-On Skills
A simple home/virtual lab dramatically improves retention:
- Build a GNS3 or Cisco Packet Tracer network with 2 routers + 2 switches + 4 hosts
- Configure VLANs and trunking; test isolation
- Configure OSPF between two routers
- Use Wireshark to capture and analyze DNS, HTTP, TCP handshake, ARP
- Subnet a /16 into /24s, then /26s, then /28s on paper
- Use
tcpdumpon a Linux box to capture and filter traffic - Configure a basic firewall rule (pfSense/OPNsense or Linux iptables/nftables)
Free and Paid Resources
- CompTIA exam objectives PDF — canonical objectives
- Professor Messer free YouTube N10-009 course — gold standard
- Mike Meyers “All-in-One CompTIA Network+ Certification Exam Guide” — comprehensive book
- Subnetting practice sites (subnettingpractice.com, etc.)
- Sailor.sh Network+ N10-009 mock exam bundle — realistic, exam-format practice
Salary Impact
Network+ alone is a baseline credential — but it unlocks doors:
- US average: $55K–$80K for “Network technician + Network+”
- Strong stepping stone to Security+, CCNA, or cloud certs
- Required or preferred for many DoD 8570 / 8140 IAT I positions
Network+ vs. Other Networking Certs
| Certification | Provider | Cost | Vendor | Difficulty |
|---|---|---|---|---|
| Network+ | CompTIA | $369 | Neutral | Medium |
| CCNA | Cisco | $300 | Cisco-focused | Medium-Hard |
| JNCIA-Junos | Juniper | $200 | Juniper | Medium |
| AZ-700 | Microsoft | $165 | Azure networking | Hard |
| AWS Advanced Networking Specialty | AWS | $300 | AWS networking | Hard |
Network+ is the broadest and most vendor-neutral. CCNA is deeper but Cisco-specific. AZ-700 and AWS networking specialties assume general networking knowledge that Network+ provides.
Most Common Reasons People Fail
- Weak subnetting. Slow subnetting under exam timer kills your overall score.
- Skipping port memorization. Several questions hinge on knowing well-known ports cold.
- Under-practicing PBQs. They take real time; rehearse the formats.
- Treating troubleshooting as common sense. CompTIA’s specific 7-step methodology is testable.
- Booking too early. 8–12 weeks of structured prep is the norm for a first-time pass.
After You Pass
Strong next moves:
- Security+: the natural next CompTIA step into security
- CCNA: vendor-specific networking depth (especially for ISP / data center roles)
- Cloud: AWS Cloud Practitioner, AZ-900, or GCP ACE
- Linux: LFCS or RHCSA
Frequently Asked Questions
Q: Is Network+ worth it in 2026? A: Yes — vendor-neutral networking remains a baseline expectation for security, cloud, and infrastructure careers.
Q: How hard is Network+ compared to Security+? A: Similar difficulty. Network+ leans more toward subnetting and protocols; Security+ leans toward concepts, frameworks, and PBQs.
Q: Do I need A+ first? A: Not required, but recommended for those with under 6 months of IT experience.
Q: How is N10-009 different from N10-008? A: More cloud, more zero trust, more SDN/SD-WAN, less legacy hardware-specific content. The 7-step troubleshooting methodology is unchanged.
Q: Should I take Network+ or CCNA? A: Network+ if your career is broad IT or security. CCNA if your career is specifically networking with Cisco gear.
Q: How much do I need to know about subnetting? A: A lot. Practice daily until you can subnet /24 into /27s mentally in under 30 seconds.
Ready to Start?
Network+ is the foundational credential that pays off in nearly every IT career direction. Spend 8–12 weeks drilling subnetting, memorizing ports, building a virtual lab, and practicing PBQs.
Take a free Network+ N10-009 practice test on Sailor.sh to baseline your knowledge, then work the full mock exam bundle until you consistently score 85%+ — well above the 80% passing threshold.