CompTIA Network+ Practice Test 1

Practice Test 1 is a fixed 30-question set drawn from our CompTIA Network+ (N10-009) pool, balanced across all 5 exam domains. Every item is original — written to the public N10-009 objectives, never copied from a real exam — and each answer is fully explained with cited sources. It is untimed, so you can stop on any question and read the reasoning before moving on.

Skills this set drills: troubleshooting, security, ipv4, operations, addressing, cabling, layer3, osi.

Domain coverage

• Networking Concepts — 7 questions
• Network Implementation — 6 questions
• Network Operations — 6 questions
• Network Security — 4 questions
• Network Troubleshooting — 7 questions

Objectives covered: 1.1 Devices and the OSI model; 1.1 OSI model; 1.1 TCP vs UDP; 1.4 DNS record types; 1.4 Ports and protocols; 1.7 IPv4 addressing (RFC 1918); 1.8 Subnetting (CIDR, VLSM); 2.1 Cabling and media; 2.1 IP configuration — default gateway; 2.1 Inter-VLAN routing; 2.1 Switching — VLANs and trunking; 2.2 Power over Ethernet; 2.3 Wireless security; 3.1 Logging — syslog severity; and more.

Its domain mix tracks the N10-009 blueprint closely.