CompTIA Network+ N10-009 (V9) Exam Objectives
This page translates the CompTIA Network+ N10-009 (V9) Exam Objectives into practical, plain English. You’ll see what each domain covers, typical task themes, and a focused study plan that turns objectives into hands-on drills, PBQs, and exam-day confidence.
Last updated: November 10, 2025. Always verify against the official CompTIA blueprint before your exam.
TL;DR: The Network+ N10-009 (V9) exam validates real-world networking skills: core concepts and IP addressing, wired/wireless implementations, network operations and tools, network security fundamentals, and systematic troubleshooting. Treat the objectives like a checklist: review → lab → quiz → PBQ.
Table of Contents
- What Is Covered on CompTIA Network+ N10-009 (V9)?
- Objective-By-Objective Breakdown (with examples)
- Why Network+ After A+ (and before Security+)?
- Study Plan: How to Master the N10-009 Objectives
- Free Checklist & Next Steps
- Frequently Asked Questions
What Is Covered on CompTIA Network+ N10-009 (V9)?
Network+ validates job-ready skills for building and supporting modern networks across on-prem, cloud, and hybrid environments. Expect scenario-driven questions and PBQs that test your ability to:
- Explain networking concepts: models, IP addressing, routing/switching, wireless, and services
- Operate networks: documentation, monitoring, performance baselines, change management
- Secure networks: hardening, segmentation, device access control, and common safeguards
- Troubleshoot systematically: layer-by-layer diagnostics for wired, wireless, and services
Note
Wording below is learner-friendly. Map your prep to the official N10-009 (V9) objectives before test day.
Objective-By-Objective Breakdown (with examples)
1) Networking Fundamentals
- Models & flows: OSI vs. TCP/IP, encapsulation/decapsulation, MTU and fragmentation
- IP addressing: IPv4/IPv6 basics, CIDR, subnetting, VLSM, private vs. public ranges, NAT/PAT concepts
- Core protocols/services: ARP/ND, DHCP, DNS, NTP, SMTP/IMAP/POP, SNMP (awareness), syslog
- Switching & routing basics: MAC tables, CAM/ARP, default gateways, static vs. dynamic routes (high-level)
- Wireless fundamentals: bands, channels, channel width, SSIDs, roaming, interference, site surveys (conceptual)
2) Network Implementations
Translate plans into working networks.- Cabling & connectors: copper categories, terminations, PoE awareness, fiber types (single-mode vs. multi-mode)
- Switching implementations: VLANs, trunking/tagging, inter-VLAN routing (concept), link aggregation (LAG)
- Routing implementations: default/static routes, basic dynamic routing awareness, dual-stack IPv4/IPv6
- Wireless implementations: WLAN designs (coverage vs. capacity), controller vs. autonomous APs, guest/IoT SSIDs
- Remote access & tunneling: site-to-site vs. remote-access VPN (concept), split-tunnel awareness, client basics
- Cloud & edge touches: WAN/SD-WAN basics, cloud connectivity options, content delivery awareness
3) Network Operations
Keep networks healthy, documented, and observable.- Documentation: logical/physical diagrams, IPAM, inventory, labels, change records
- Monitoring & baselining: flow data awareness, device/interface metrics, latency/jitter/loss, availability SLOs
- Tools & methods: ping, traceroute, arp, ipconfig/ifconfig, netstat, nslookup/dig, pathping, iperf (awareness)
- Maintenance: firmware updates, backups, configs, golden images, templates
- Processes: maintenance windows, approvals, rollbacks, version control, ticket workflows
- High-level availability: redundancy basics (dual links/devices), load balancing awareness
4) Network Security
Reduce risk with layered, practical controls.- Secure device access: strong credentials, MFA where applicable, role-based access, management plane hygiene
- Segmentation & isolation: VLANs, ACL concepts, guest/IoT separation, basic zero-trust mindset (least privilege)
- Wireless security: WPA2/WPA3 awareness, PSK vs. enterprise auth (high-level), captive portals
- Network services hardening: disable unused services, secure management paths, log and alert basics
- Threat awareness: spoofing, scans/sweeps, DoS symptoms, rogue APs/devices (recognition + first response)
5) Network Troubleshooting
Fix issues methodically for faster restoration.- Method: identify → form theory → test → plan remediation → implement → verify → document
- Wired symptoms: no link/poor link, duplex/speed mismatch, bad crimp, VLAN/tagging misconfig, loops
- Wireless symptoms: poor RSSI/SNR, co-channel/adjacent-channel interference, wrong security, DHCP conflicts
- Services/DNS/DHCP: APIPA address, no gateway/DNS, stale cache, lease exhaustion (awareness)
- Performance: congestion, buffer/queue drops, QoS misprioritization (concept), ISP vs. LAN isolation
- Evidence: logs, counters, interface errors, packet captures (awareness), baseline deltas
Why Network+ After A+ (and before Security+)?
A+ builds device and OS fundamentals. Network+ adds end-to-end connectivity, IP addressing, switching/routing, wireless, and operations—skills that make Security+ far easier to internalize. Many learners go A+ → Network+ → Security+ to align with helpdesk, NOC, junior admin, or field tech roles.
Study Plan: How to Master the N10-009 Objectives
- Map each objective to a lab Crimp a cable (practice terminators), configure a VLAN/trunk in a safe lab, set a static route, spin up a small WLAN, and test a VPN client.
- Drill IP addressing daily Do 5–10 quick subnet/CIDR exercises. Explain each answer aloud—what network, broadcast, and usable ranges are.
- Practice the tools in real context Use ping/traceroute to isolate faults, ipconfig/ifconfig for interfaces, nslookup/dig for DNS, and iperf (if available) for throughput tests.
- Baseline and monitor Capture normal latency and bandwidth for your lab. When something feels “slow,” compare to your baseline to guide triage.
- Troubleshoot by layers When stuck, step up/down the stack: physical → link → network → transport → app. Document symptoms, actions, and outcomes.
For every lab, add a one-paragraph “root cause + fix” note. Re-reading your own notes is the fastest path to speed and retention.
