Free Practice Questions for CompTIA Network+ Certification
Study with 358 exam-style practice questions designed to help you prepare for the CompTIA Network+.
Exam experiencesNew
Pass and fail outcomes from candidates who prepared here — advice, scores, and prep time.
Start Practicing
All Domains
Practice with randomly mixed questions from all topics
Domain Mode
Practice questions from a specific topic area
Quiz History
Exam Details
Key information about CompTIA Network+
- Multiple choice
- Ordering
- Matching
90 minutes
English, German, Japanese, Portuguese, and Spanish
usually three years after launch (estimated 2027)
June 20, 2024
V9
720 (on a scale of 100-900)
N10-009
maximum of 90, a mix of multiple-choice and performance-based questions
CompTIA A+ certification, with 9 to 12 months of hands-on experience in a junior network administrator or network support technician role
technical support specialist, network operations specialist, and system administrator
Exam Topics & Skills Assessed
Skills measured (from the official study guide)
Domain 1: Networking concepts
Subdomain 1.1: OSI model layers
This covers the seven layers of the OSI model.
- physical - data link - network - transport - session - presentation - application
Subdomain 1.2: Networking appliances
Understand the function and placement of various networking appliances.
- routers - switches - firewalls - IDS/IPS - load balancers - proxies - NAS - SAN - wireless devices
Subdomain 1.3: Cloud concepts
Explain common cloud computing concepts as they relate to networking.
- NFV - VPC - network security groups - cloud gateways - deployment models (public, private, hybrid) - service models (SaaS, IaaS, PaaS)
Subdomain 1.4: Ports and protocols
Identify well-known ports and protocols and their purposes.
- FTP - SFTP - SSH - Telnet - SMTP - DNS - DHCP - HTTP - HTTPS - SNMP - LDAP - RDP - SIP
Subdomain 1.5: Traffic types
Differentiate between various network traffic types.
- unicast - multicast - anycast - broadcast
Subdomain 1.6: Transmission media
Compare and contrast different types of network transmission media.
- wireless (802.11, cellular, satellite) - wired (fiber, coaxial, DAC)
Subdomain 1.7: Transceivers and connectors
Recognize common network transceivers and connectors.
- SC - LC - ST - MPO - RJ11 - RJ45 - F-type - BNC
Subdomain 1.8: Network topologies
Describe the characteristics of different network topologies.
- mesh - hybrid - star/hub and spoke - spine and leaf - point-to-point - three-tier - collapsed core
Subdomain 1.9: IPv4 addressing
Explain concepts related to IPv4 addressing.
- public vs. private - APIPA - RFC1918 - loopback - subnetting (VLSM, CIDR) - address classes (A, B, C, D, E)
Domain 2: Network implementation
Subdomain 2.1: Routing technologies
Implement various routing technologies and concepts.
- static and dynamic routing (BGP, EIGRP, OSPF) - route selection - NAT - PAT - FHRP - VIP - subinterfaces
Subdomain 2.2: Switching technologies
Configure and manage network switching technologies.
- VLANs - interface configuration - spanning tree - MTU - jumbo frames
Subdomain 2.3: Wireless devices
Deploy and configure wireless networking devices and settings.
- channels - frequency options - SSID - network types - encryption - guest networks - authentication - antennas - access points
Subdomain 2.4: Physical installations
Summarize the considerations for physical network installations.
- installation implications - power considerations - environmental factors
Domain 3: Network operations
Subdomain 3.1: Documentation
Use appropriate documentation and diagrams to manage the network.
- physical vs. logical diagrams - rack diagrams - cable maps - network diagrams - asset inventory - IPAM - SLA - wireless surveys
Subdomain 3.2: Life-cycle management
Explain concepts related to network life-cycle management.
- EOL - EOS - software management - decommissioning
Subdomain 3.3: Change management
Describe the processes involved in network change management.
- request process tracking
Subdomain 3.4: Configuration management
Implement network configuration management.
- production - backup - baseline configurations
Subdomain 3.5: Network monitoring
Use network monitoring tools and techniques to ensure operational efficiency.
- SNMP - flow data - packet capture - baseline metrics - log aggregation - API integration - port mirroring
Subdomain 3.6: Disaster recovery
Explain disaster recovery concepts and their implementation.
- RPO - RTO - MTTR - MTBF - cold/warm/hot sites - active-active/passive - testing
Subdomain 3.7: Network services
Manage and configure common network services.
- DHCP - SLAAC - DNS - NTP - PTP - NTS
Subdomain 3.8: Access and management
Describe methods for network access and management.
- VPNs - SSH - GUI - API - console
Domain 4: Network security
Subdomain 4.1: Logical security
Implement various logical security controls and concepts.
- encryption (data in transit/rest) - PKI - IAM - MFA - SSO - RADIUS - LDAP - SAML - TACACS+ - time-based authentication - authorization - least privilege - role-based access control - geofencing
Subdomain 4.2: Physical security
Summarize physical security measures for network devices.
- cameras - locks
Subdomain 4.3: Deception technologies
Explain the use of deception technologies in network security.
- honeypot - honeynet
Subdomain 4.4: Security terminology
Define fundamental security terminology.
- risk - vulnerability - exploit - threat - CIA triad
Subdomain 4.5: Audits and compliance
Explain concepts related to security audits and compliance.
- data locality - PCI DSS - GDPR
Subdomain 4.6: Network segmentation
Implement network segmentation for security purposes.
- IoT - IIoT - SCADA - ICS - OT - guest - BYOD
Subdomain 4.7: Types of attacks
Recognize and describe common types of network attacks.
- DoS/DDoS - VLAN hopping - MAC flooding - ARP poisoning/spoofing - DNS poisoning/spoofing - rogue devices/services - evil twin - on-path attack - social engineering (phishing, dumpster diving, shoulder surfing, tailgating)
Subdomain 4.8: Security features and defense
Implement security features and defense-in-depth strategies.
- device hardening - NAC - key management - ACL - URL/content filtering - trusted vs. untrusted zones - screened subnet
Domain 5: Network troubleshooting
Subdomain 5.1: Troubleshooting methodology
Apply a systematic troubleshooting methodology to resolve network issues.
- identifying the problem - establishing a theory - testing - planning - implementing a solution - verifying functionality - documenting findings
Subdomain 5.2: Cabling and physical interface issues
Troubleshoot common cabling and physical interface problems.
- cable issues (incorrect type, signal degradation, improper termination, TX/RX transposed) - interface issues (increasing counters, port status) - hardware issues (PoE, transceiver mismatch, signal strength)
Subdomain 5.3: Network services issues
Diagnose and resolve issues with common network services.
- switching issues (STP, VLAN assignment, ACLs) - routing issues (routing table and default routes) - address pool exhaustion - incorrect gateway/IP/subnet mask
Subdomain 5.4: Performance issues
Troubleshoot network performance issues.
- congestion - latency - packet loss - wireless interference
Subdomain 5.5: Tools and protocols
Use appropriate tools and protocols to aid in network troubleshooting.
- protocol analyzers - command line tools - cable testers - Wi-Fi analyzers
Techniques & products