Free Practice Questions for CompTIA Network+ Certification
Study with 358 exam-style practice questions designed to help you prepare for the CompTIA Network+.
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Exam Details
Key information about CompTIA Network+
- Multiple choice
- Ordering
- Matching
Exam Topics & Skills Assessed
Skills measured (from the official study guide)
Domain 1: Networking concepts
Subdomain 1.1: OSI model layers
physical, data link, network, transport, session, presentation, application.
Subdomain 1.2: Networking appliances
routers, switches, firewalls, IDS/IPS, load balancers, proxies, NAS, SAN, and wireless devices.
Subdomain 1.3: Cloud concepts
NFV, VPC, network security groups, cloud gateways, deployment models (public, private, hybrid), service models (SaaS, IaaS, PaaS).
Subdomain 1.4: Ports and protocols
FTP, SFTP, SSH, Telnet, SMTP, DNS, DHCP, HTTP, HTTPS, SNMP, LDAP, RDP, SIP.
Subdomain 1.5: Traffic types
unicast, multicast, anycast, broadcast.
Subdomain 1.6: Transmission media
wireless (802.11, cellular, satellite), wired (fiber, coaxial, DAC).
Subdomain 1.7: Transceivers and connectors
SC, LC, ST, MPO, RJ11, RJ45, F-type, BNC.
Subdomain 1.8: Network topologies
mesh, hybrid, star/hub and spoke, spine and leaf, point-to-point, three-tier, and collapsed core.
Subdomain 1.9: IPv4 addressing
public vs. private, APIPA, RFC1918, loopback, subnetting (VLSM, CIDR), and address classes (A, B, C, D, E).
Domain 2: Network implementation
Subdomain 2.1: Routing technologies
static and dynamic routing (BGP, EIGRP, OSPF), route selection, NAT, PAT, FHRP, VIP, and subinterfaces.
Subdomain 2.2: Switching technologies
VLANs, interface configuration, spanning tree, MTU, and jumbo frames.
Subdomain 2.3: Wireless devices
channels, frequency options, SSID, network types, encryption, guest networks, authentication, antennas, and access points.
Subdomain 2.4: Physical installations
installation implications, power considerations, and environmental factors.
Domain 3: Network operations
Subdomain 3.1: Documentation
physical vs. logical diagrams, rack diagrams, cable maps, network diagrams, asset inventory, IPAM, SLA, and wireless surveys.
Subdomain 3.2: Life-cycle management
EOL, EOS, software management, and decommissioning.
Subdomain 3.3: Change management
request process tracking.
Subdomain 3.4: Configuration management
production, backup, baseline configurations.
Subdomain 3.5: Network monitoring
SNMP, flow data, packet capture, baseline metrics, log aggregation, API integration, and port mirroring.
Subdomain 3.6: Disaster recovery
RPO, RTO, MTTR, MTBF, cold/warm/hot sites, active-active/passive, and testing.
Subdomain 3.7: Network services
DHCP, SLAAC, DNS, NTP, PTP, and NTS.
Subdomain 3.8: Access and management
VPNs, SSH, GUI, API, and console.
Domain 4: Network security
Subdomain 4.1: Logical security
encryption (data in transit/rest), PKI, IAM, MFA, SSO, RADIUS, LDAP, SAML, TACACS+, time-based authentication, authorization, least privilege, role-based access control, and geofencing.
Subdomain 4.2: Physical security
cameras and locks.
Subdomain 4.3: Deception technologies
honeypot and honeynet.
Subdomain 4.4: Security terminology
risk, vulnerability, exploit, threat, and CIA triad.
Subdomain 4.5: Audits and compliance
data locality, PCI DSS, and GDPR.
Subdomain 4.6: Network segmentation
IoT, IIoT, SCADA, ICS, OT, guest, and BYOD.
Subdomain 4.7: Types of attacks
DoS/DDoS, VLAN hopping, MAC flooding, ARP poisoning/spoofing, DNS poisoning/spoofing, rogue devices/services, evil twin, on-path attack, and social engineering (phishing, dumpster diving, shoulder surfing, tailgating).
Subdomain 4.8: Security features and defense
device hardening, NAC, key management, ACL, URL/content filtering, trusted vs. untrusted zones, and screened subnet.
Domain 5: Network troubleshooting
Subdomain 5.1: Troubleshooting methodology
identifying the problem, establishing a theory, testing, planning, and implementing a solution, verifying functionality, and documenting findings.
Subdomain 5.2: Cabling and physical interface issues
cable issues (incorrect type, signal degradation, improper termination, TX/RX transposed), interface issues (increasing counters, port status), and hardware issues (PoE, transceiver mismatch, signal strength).
Subdomain 5.3: Network services issues
switching issues (STP, VLAN assignment, ACLs), routing issues (routing table and default routes), address pool exhaustion, and incorrect gateway/IP/subnet mask.
Subdomain 5.4: Performance issues
congestion, latency, packet loss, and wireless interference.
Subdomain 5.5: Tools and protocols
protocol analyzers, command line tools, cable testers, and Wi-Fi analyzers.
Techniques & products