CompTIA · N10-009
CompTIA Network+ validates the skills needed to establish, maintain, and troubleshoot essential networks. It covers networking concepts, implementation, operations, security, and troubleshooting for junior network administrators.
Practice Questions
699
≈ 7 practice exams
Duration
90 minutes
Passing Score
720/900
Difficulty
AssociateLast Updated
Mar 2026
This Network+ practice exam follows how N10-009 is actually weighted: Network Troubleshooting leads at 24 percent, Networking Concepts close behind at 23 percent, Network Implementation at 20 percent, Network Operations at 19 percent, and Network Security at 14 percent. With 699 questions in the bank, troubleshooting and core concepts get matching depth instead of an even split across five domains that would under-prepare you for the real exam.
On test day you face a maximum of 90 questions in 90 minutes, mixing multiple choice with performance-based questions, and you need a scaled 720 on a 100 to 900 scale to pass. N10-009 launched June 20, 2024, and CompTIA typically retires exams about three years after launch, so expect it to remain current into 2027. The explanations here connect each answer back to the underlying protocol, topology, or troubleshooting methodology, which is exactly what the performance-based questions test.
CompTIA recommends holding A+ certification plus 9 to 12 months of hands-on experience in a junior network administrator or network support role first, but there is no formal prerequisite. CompTIA raised prices across its exam lineup around June 2026, moving the Network+ voucher to roughly $399. Start with the 30 free questions to benchmark yourself, then work through the full 699-question bank until your accuracy holds steady across all five domains.
CompTIA Network+ (N10-009) validates the skills required to establish, maintain, and troubleshoot essential enterprise and small office/home office (SOHO) networks. The certification covers networking concepts including the OSI model and protocols, network implementation such as routing and switching, network operations including documentation and monitoring, network security with encryption and access controls, and troubleshooting methodologies. The N10-009 exam, launched June 20, 2024, includes a maximum of 90 questions (a mix of multiple-choice and performance-based questions) delivered over 90 minutes. This vendor-neutral certification prepares professionals to support networks across multiple platforms and is recognized by the U.S. Department of Defense (DoD 8140) and accredited by ANSI.
Network+ is designed for IT professionals pursuing roles as junior network administrators, network support technicians, network operations specialists, technical support specialists, and system administrators. The certification targets candidates with basic IT knowledge who are advancing into network-focused positions and those seeking to validate their hands-on networking experience. It serves as an ideal intermediate stepping stone for IT professionals who have completed CompTIA A+ and are looking to specialize in networking infrastructure and operations.
CompTIA recommends a minimum of 9 to 12 months of hands-on experience in a junior network administrator or network support technician role. While not strictly required, holding CompTIA A+ certification beforehand is strongly recommended as it provides foundational IT knowledge. Candidates should have practical experience with network configuration, basic troubleshooting, and familiarity with networking concepts including TCP/IP, DHCP, DNS, and network topologies. Hands-on experience with networking tools, switches, routers, and wireless access points is beneficial for success, particularly for the performance-based questions that simulate real-world network administration tasks.
The N10-009 exam contains a maximum of 90 scored questions delivered over 90 minutes. The exam combines multiple-choice questions (including single and multiple-response formats) with performance-based questions (PBQs) that require candidates to solve networking problems in a simulated IT environment. The exam uses a scaled scoring system with a range of 100-900, and a passing score is 720. The exam is administered through CompTIA's testing partners both online and at testing centers, with results available immediately upon completion. The test was launched on June 20, 2024, with an estimated retirement date around 2027.
CompTIA Network+ certification significantly enhances career prospects in networking and IT operations. Professionals holding Network+ certification typically earn approximately 20% more than non-certified peers, with entry-level salaries ranging from $50,000 to $65,000, compared to around $40,000 for non-certified individuals. Career paths include technical support specialist, network operations specialist, system administrator, and junior network administrator positions. The certification is recognized by the U.S. Department of Defense (DoD 8140) and accredited by ANSI, making it valuable for government and enterprise roles. As professionals gain experience with Network+, advancement opportunities include senior network administrator, systems engineer, and network architect positions, with system administrators earning median salaries around $90,000 and systems engineers averaging $130,000 annually. Unlike vendor-specific certifications, Network+ prepares professionals to support multi-vendor network environments, making it universally applicable across diverse IT infrastructures and organizations.
5 sample questions with answers and explanations. The full bank has 699 questions, enough for 7 full-length practice exams.
Preview — answers shown1. An administrator is reviewing DNS records for Adatum's domain. They see a record that maps 'www.adatum.com' to 'webserver01.adatum.com'. What type of DNS record is this? (Select one!)
Explanation
A CNAME (Canonical Name) record creates an alias by mapping one domain name to another domain name. In this case, it maps the alias 'www.adatum.com' to the canonical name 'webserver01.adatum.com'. An A record would map a hostname directly to an IPv4 address, not to another hostname. PTR records are used for reverse DNS lookups mapping IP addresses to hostnames, and MX records specify mail servers for email delivery.
2. A Litware switch running Rapid Spanning Tree Protocol has a new port connected. Which RSTP port states will the port cycle through before actively forwarding user traffic? (Select three!)
Multiple correct answersExplanation
In RSTP, ports transition through Discarding (combining legacy blocking and listening), Learning (populating MAC address table without forwarding frames), and finally Forwarding (actively forwarding traffic). RSTP eliminates the legacy Listening state and combines it with Blocking into the Discarding state, enabling faster convergence of 1-6 seconds compared to 30-50 seconds for legacy STP.
3. A network engineer at Tailspin needs to subnet the 192.168.100.0/24 network to create 6 subnets with at least 25 hosts each. What is the appropriate subnet mask to meet this requirement? (Select one!)
Explanation
A /27 subnet mask (255.255.255.224) provides 32 addresses per subnet with 30 usable hosts, creating 8 possible subnets from a /24 network. This satisfies both requirements: at least 6 subnets and at least 25 usable hosts per subnet. A /26 (255.255.255.192) would only provide 4 subnets. A /28 (255.255.255.240) provides only 14 usable hosts, insufficient for the 25-host requirement.
4. Northwind Traders has an SLA with their ISP guaranteeing 99.9% uptime per month. During January (31 days), how much downtime is allowed under this SLA? (Select one!)
Explanation
To calculate allowed downtime: 31 days equals 31 multiplied by 24 multiplied by 60, which equals 44,640 minutes total in January. With 99.9% uptime, 0.1% downtime is allowed. Calculating 44,640 multiplied by 0.001 equals 44.64 minutes, approximately 44.6 minutes. The 43-minute answer incorrectly uses a 30-day month approximation rather than January's actual 31 days. The 7.4-hour answer calculates 99% uptime (1% downtime) rather than 99.9%. The 3.7-hour answer contains an error in the percentage or time unit conversion. Understanding SLA calculations is critical for network professionals. Common availability tiers include 99% equaling roughly 3.65 days per year, 99.9% equaling roughly 8.76 hours per year, 99.99% equaling roughly 52.6 minutes per year, and 99.999% (five nines) equaling roughly 5.26 minutes per year of allowed downtime.
5. A data center technician at Tailspin needs to select fiber optic cable for a 2 km connection between buildings requiring 10 Gbps throughput. Which fiber type is most appropriate? (Select one!)
Explanation
Single-mode fiber (SMF) is designed for long-distance transmissions and can support distances of many kilometers at 10 Gbps and beyond. Multimode fiber types (OM1, OM3, OM4) are limited to much shorter distances—typically 33 to 550 meters for 10 Gbps depending on the OM rating. For a 2 km distance requirement, single-mode fiber is the only viable option as it uses a smaller core and laser light sources that allow signals to travel much farther without degradation.
A maximum of 90 questions in 90 minutes, mixing multiple-choice with performance-based questions.
A scaled 720 on a 100 to 900 scale.
CompTIA raised prices across its exam lineup around June 2026, moving the Network+ voucher to roughly $399. Check the official CompTIA store for the current price before buying.
Network Troubleshooting (24%), Networking Concepts (23%), Network Implementation (20%), Network Operations (19%), and Network Security (14%).
None formal. CompTIA recommends A+ certification plus 9 to 12 months of hands-on experience in a junior network administrator or network support role.
It launched June 20, 2024. CompTIA typically retires exams about three years after launch, so expect it to remain current into 2027, though no official retirement date has been announced yet.
CompTIA does not publish an official pass rate. Most candidates find the performance-based questions the hardest part, similar to Security+.
Many candidates move on to Security+ or vendor-specific networking certifications, such as Cisco CCNA, after Network+, since it is considered foundational networking knowledge.
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