CompTIA Network+ (N10-009)

CompTIA Network+ (N10-009) — Professional Overview (2025 Edition)

The CompTIA Network+ N10-009 certification is the latest version of CompTIA’s global, vendor-neutral networking exam. It validates the foundational skills required for network installation, configuration, troubleshooting, security, and operations across wired and wireless infrastructures.

This version reflects modern networking trends such as cloud networking, virtualization, automation, zero-trust security, and advanced troubleshooting.

What Network+ N10-009 Covers

CompTIA reorganized the objectives into five core domains:

Networking Concepts — 23%

Focuses on the fundamentals required to understand modern network architectures:

OSI & TCP/IP model comparison

IPv4/IPv6 addressing, subnetting, and routing concepts

Ports, protocols, and protocol types (DNS, DHCP, ICMP, SNMP, HTTPS, etc.)

Cloud networking models (IaaS, PaaS, SaaS), on-prem, hybrid

Virtualization basics: VLANs, VRFs, overlays, SDN/NFV

Zero Trust networking principles

Network Operations — 19%

Operational aspects of managing healthy enterprise networks:

Network monitoring (SNMP, Syslog, NetFlow)

Policies, processes, and change management

Disaster recovery and high availability

Remote access technologies (VPN, RDP, SSH)

Documentation practices (rack diagrams, asset info)

Network Security — 20%

Essential security concepts needed for secure network deployments:

Authentication, authorization, accounting (AAA)

Firewalls, segmentation, DMZs, NAC

Hardening wired/wireless networks

Threat detection basics

Secure protocols: SFTP, HTTPS, TLS, IPsec

Physical security controls

Network Architecture — 18%

Covers design principles for scalable and resilient networks:

LAN, WAN, MAN architectures

Spine-leaf, 3-tier enterprise design

Wireless architectures (WLAN controllers, AP types)

VPN architecture (site-to-site, remote access)

IoT and industrial networking fundamentals

Cloud-driven architectures & SD-WAN

Network Troubleshooting — 20%

Step-by-step approaches to solving real-world networking issues:

Troubleshooting methodology

Packet analysis tools (ping, traceroute, netstat, tcpdump)

Wired/wireless connectivity issues

VLAN & routing issues

DNS/DHCP troubleshooting

Performance issues (latency, jitter, throughput)

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