TheoryCOMPTIA Network+ 2026 Prep Practice Questions
Free CompTIA Network+ 2026 Prep practice questions with answers and plain-English explanations. Browse the PDF, video and online mock test.
CompTIA Network+ 2026 Prep Questions
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Q1Which network configuration allows remote users to securely access a company's internal network through the internet?
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✓ Correct answer: VPN (Virtual Private Network)
Answer: VPN (Virtual Private Network) A Virtual Private Network (VPN) creates a secure, encrypted connection over the internet between the remote user and the company's internal network. This allows employees to access resources and data securely from any device, ensuring the integrity and confidentiality of the transmitted information. Network Address Translation (NAT), VLAN (Virtual Local Area Network), and DMZ (Demilitarized Zone) all perform distinct networking tasks. NAT translates private IP addresses to a public IP address for internet access. VLAN segments a network into different broadcast domains. DMZ provides an additional layer of security by isolating external services from the internal network.
Q2Which component of a network cable does the 802.3af PoE (Power over Ethernet) standard affect?
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✓ Correct answer: The power delivery
The 802.3af PoE standard is specifically designed to supply power over Ethernet cables to power devices such as IP cameras and wireless access points. It does not affect the color coding, bandwidth, or speed of the network cables.
Q3In a network, what type of route is manually entered into a router's routing table to define a path for packets destined to an unknown network?
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✓ Correct answer: Static route
Answer: Static route A static route is manually configured by a network administrator to specify the path that packets should take to reach a particular network. This type of route is used when automatic routing is not desired or possible. A dynamic route is learned automatically through routing protocols, a connected route is automatically added for directly connected networks, and a default route specifies the path for any addresses not found in the routing table but is usually not manually configured for specific external networks.
Q4Which of the following is NOT a valid characteristic of an IP address?
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✓ Correct answer: MAC address
Answer: MAC address An IP address is used to uniquely identify a device on a network. It consists of a Network ID, a Host ID, and is associated with a Subnet mask. A MAC address, on the other hand, is a hardware identifier used at the data link layer for network communication.
Q5What is the maximum length supported by a Cat6 cable for 10GBase-T Ethernet?
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✓ Correct answer: 55 m
Answer: 55 m Cat6 cables can support 10GBase-T Ethernet speeds up to a maximum distance of 55 meters. Beyond this distance, the signal quality degrades and higher category cables, like Cat6a or Cat7, are recommended for longer distances.
Q6Which type of IPv6 address range is FC00::/7?
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✓ Correct answer: Unique local unicast
Answer: Unique local unicast Unique local addresses are non-routable IPv6 addresses in the FC00::/7 range. They are used within a private network, similar to private IP addresses in IPv4 (e.g., 192.168.x.x). Global unicast addresses are routable on the Internet and are in the range 2000::/3. Link-local unicast addresses are used on a single link and have the prefix FE80::/10. IPv6 multicast addresses, used to send packets to multiple interfaces, are in the FF00::/8 range.
Q7The Enhanced Interior Gateway Routing Protocol (EIGRP) uses which of the following as a metric for selecting the best path?
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✓ Correct answer: Reliability and Delay
Answer: Reliability and Delay EIGRP uses a combination of metrics including reliability, delay, load, and bandwidth, with reliability and delay being two of the main factors. In contrast, OSPF uses bandwidth and RIP uses hop count as their metrics.
Q8Which of the following is a model that allows businesses to lease virtual computing resources from a service provider?
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✓ Correct answer: IaaS
Answer: IaaS Infrastructure as a Service (IaaS) is a service model that allows businesses to lease virtualized computing resources from a cloud provider. Desktop as a Service (DaaS) offers a virtual desktop infrastructure managed by a third-party provider. Platform as a Service (PaaS) provides a managed environment for developers to build, test, and deploy software applications. Software as a Service (SaaS) offers software solutions provided over the internet on a subscription basis, such as Microsoft 365 or Google Workspace.
Q9Which type of cloud topology is most prone to data leakage due to its shared infrastructure?
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✓ Correct answer: Public cloud
Public cloud deployments are more prone to data leakage because multiple different organizations share the same infrastructure. Private clouds have dedicated infrastructure, reducing this risk. Hybrid clouds, being a mix of public and private clouds, can have both shared and dedicated components. In a community cloud, infrastructure may be shared only among organizations with similar needs, which may reduce the risk compared to the public cloud.
Q10Which of the following network security audits can be entirely carried out by software without human intervention?
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✓ Correct answer: Automated security audit
Correct answer: Automated security audit An automated security audit is a type of review performed entirely by software tools to scan and verify the security state of a network without human intervention. Manual configuration reviews, security policy compliance checks, and risk analyses require human input to interpret findings and make decisions based on complex data sets and organizational context.
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