Networking
The foundation for every IT career path — networking, security, cloud, systems administration. Five domains, up to 90 questions, 90 minutes. Learn to build, manage, and troubleshoot real networks.
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Five exam domains. Weighted exactly how CompTIA tests them.
Methodology, cabling issues, service problems, performance bottlenecks, command-line tools — the largest domain on the exam
OSI model, ports & protocols, IP addressing, subnetting, cloud, SDN, zero trust, IPv6 — the theoretical foundation
Routing, switching, VLANs, wireless configuration, physical installations — building real networks
Documentation, monitoring, disaster recovery, DHCP/DNS/NTP services, VPN & remote management
Encryption, IAM, attacks (DDoS, ARP poisoning, evil twin), hardening, NAC, ACLs, security zones
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Describe the seven OSI layers, place protocols and devices at the correct layer, and trace how data is encapsulated and ...
Compare and contrast networking appliances, applications, and functions including routers, switches, firewalls, IDS/IPS,...
Summarize cloud concepts and connectivity options including deployment models, service models, network functions virtual...
Identify common TCP/UDP ports, distinguish connection-oriented from connectionless transport, and classify traffic as un...
Select and identify copper and fiber media, connectors, and transceivers for a given distance and speed, and apply corre...
Compare and contrast network topologies, architectures, and types including mesh, star, spine-and-leaf, three-tier hiera...
Interpret IPv4 and IPv6 addressing, calculate subnets using CIDR, and distinguish public, private, and special-use range...
Summarize evolving use cases for modern network environments including SDN, SD-WAN, VXLAN, zero trust architecture, SASE...
Explain how routers forward packets using routing tables, distinguish static from dynamic routing, and compare common ro...
Explain how switches forward frames via MAC tables, segment networks with VLANs and trunks, and prevent loops with Spann...
Explain Wi-Fi standards, bands and channels, antenna and placement choices, and wireless security. Recognizing interfere...
Explain important factors of physical installations including rack infrastructure, IDF/MDF placement, power systems, cab...
Explain the role of network documentation in daily operations, apply lifecycle and change management processes to mainta...
Apply SNMP, flow analysis, packet capture, and log aggregation technologies to monitor network health, detect anomalies,...
Explain redundancy and high-availability designs, disaster recovery metrics and site types, and backup and power protect...
Explain how DNS resolves names, DHCP assigns addresses, and NTP synchronizes time, plus NAT. Recognizing their record ty...
Evaluate VPN technologies for secure remote connectivity, compare management connection methods for device administratio...
Apply encryption and PKI to protect data, evaluate identity and access management frameworks for authentication and auth...
Identify common Layer 2, application-layer, and social engineering attacks, evaluate their impact on network availabilit...
Apply device hardening practices, configure network access control mechanisms, and design security zones to reduce the n...
Apply the structured CompTIA troubleshooting methodology to systematically identify, diagnose, and resolve network probl...
Diagnose Layer 1 problems: copper and fiber cabling faults, interface errors, duplex mismatches, and power/environmental...
Diagnose and resolve common switching, routing, and IP addressing problems that disrupt network services. These issues a...
Diagnose and resolve network performance degradation caused by congestion, bottlenecks, interference, and misconfigurati...
Select and apply the correct software, hardware, and device command tools to diagnose network faults efficiently. Knowin...
Network+ is the bridge between A+ and Security+, CCNA, cloud certs, and systems administration. Every IT specialization requires networking fundamentals.
Network technician, junior network admin, help desk (Tier 2), NOC analyst — Network+ validates you can manage real infrastructure, not just answer phones.
Unlike Cisco CCNA, Network+ covers concepts across all vendors. Learn the principles once, apply them to Cisco, Juniper, Aruba, Meraki — any equipment you encounter.
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Start Learning — FreeDisclaimer: CompTIA® and Network+® are registered trademarks of the Computing Technology Industry Association. AI Bridge Foundation is not affiliated with CompTIA. Tutoring conversations are generated by AI (Claude by Anthropic) and may contain errors. This is a free test preparation tool designed to supplement your study — not replace official instruction. AI Bridge Foundation is a 501(c)(3) nonprofit and is not affiliated with, endorsed by, or partnered with any certification body or testing organization mentioned on this page.