Free N10-009: CompTIA Network+ Exam Questions and Answers
652 verified practice questions for N10-009.
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Last updated: September 19, 2026
- Exam code
- N10-009
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- CompTIA
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- 1000+
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- 130 mins · 70%
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Question #1
A network technician is attempting to harden a commercial switch that was recently purchased. Which of the following hardening techniques best mitigates the use of publicly available information?
Please select an optionIncorrectCorrect answer: A
Changing the default password is a hardening technique that best mitigates the use of publicly available information, such as vendor documentation, online forums, or hacking tools, that may reveal the default credentials of a commercial switch. By changing the default password to a strong and unique one, the network technician can prevent unauthorized access to the switch configuration and management. References: • Network Hardening - N10-008 CompTIA Network+ : 4.3 - YouTube1 • CompTIA Network+ Certification Exam Objectives, page 151
Was this answer correct?Question #2
Which of the following can have multiple VLAN interfaces?
Please select an optionIncorrectCorrect answer: B
A Layer 3 switch routes traffic and can host multiple switched virtual interfaces, one per VLAN. Hubs, bridges and load balancers do not route between VLANs.
Was this answer correct?Question #3
A PC and a network server have no network connectivity, and a help desk technician is attempting to resolve the issue. The technician plans to run a constant ping command from a Windows workstation while testing various possible reasons for the connectivity issue. Which of the following should the technician use?
Please select an optionIncorrectCorrect answer: D
ping -t is an option for the ping command in Windows that allows the user to send continuous ping requests to a target until stopped by pressing Ctrl-C. This can help the technician run a constant ping command while testing various possible reasons for the connectivity issue. ping -w is an option for the ping command in Windows that allows the user to specify a timeout value in milliseconds for each ping request. ping -i is an option for the ping command in Linux that allows the user to specify the time interval in seconds between each ping request. ping -s is an option for the ping command in Linux that allows the user to specify the size of the data payload in bytes for each ping request. References: How to Use the Ping Command in Windows - Lifewire (https://www.lifewire.com/ping-command-2618099)
Was this answer correct?Question #4
An organization has a security requirement that all network connections can be traced back to a user. A network administrator needs to identify a solution to implement on the wireless network. Which of the following is the best solution?
Please select an optionIncorrectCorrect answer: A
Enterprise authentication is a method of securing wireless networks that uses an external authentication server, such as RADIUS, to verify the identity of users and devices. Enterprise authentication can provide user traceability by logging the network connections and activities of each authenticated user. This can help the organization meet its security requirement and comply with any regulations or policies that mandate user accountability12. References: • CompTIA Network+ N10-008 Certification Exam Objectives, page 83 • CompTIA Network+ Cert Guide: Wireless Networking, page 13
Was this answer correct?Question #5
Which of the following is the MOST appropriate use case for the deployment of a clientless VPN?
Please select an optionIncorrectCorrect answer: A
A clientless VPN gives users browser-based, encrypted access to internal web resources without installing any client software.
Was this answer correct?Question #6
A network technician is troubleshooting a port channel issue. When logging in to one of the switches, the technician sees the following information displayed: Native VLAN mismatch detected on interface g0/1 Which of the following layers of the OSI model is most likely to be where the issue resides?
Please select an optionIncorrectCorrect answer: A
Layer 2 of the OSI model is the data link layer, which is responsible for transferring data between adjacent nodes on a network. It uses protocols such as Ethernet, PPP, and HDLC to encapsulate data into frames and add MAC addresses for source and destination identification. It also uses protocols such as STP, LACP, and CDP to manage the physical links and prevent loops, aggregate bandwidth, and discover neighboring devices12 A native VLAN mismatch is a common Layer 2 issue that occurs when two switches are connected by a trunk port, but have different native VLANs configured on their interfaces. A native VLAN is the VLAN that is assigned to untagged frames on a trunk port. If the native VLANs do not match, the switches will drop the untagged frames and generate an error message. This can cause connectivity problems and security risks on the network345 To resolve a native VLAN mismatch, the network technician should ensure that both switches have the same native VLAN configured on their trunk ports, or use a different port mode such as access or general.
Was this answer correct?Question #7
A Chief Information Officer wants to monitor network breaching in a passive, controlled manner. Which of the following would be best to implement?
Please select an optionIncorrectCorrect answer: A
A honeypot is a decoy system that is designed to attract and trap hackers who attempt to breach the network. A honeypot mimics a real system or network, but contains fake or non- sensitive data and applications. A honeypot can be used to monitor network breaching in a passive, controlled manner, as it allows the network administrator to observe the hacker’s behavior, techniques, and tools without compromising the actual network or data. A honeypot can also help to divert the hacker’s attention from the real targets and collect forensic evidence for further analysis or prosecution.
Was this answer correct?Question #8
A technician is trying to install a VoIP phone, but the phone is not turning on. The technician checks the cable gong from the phone to the switch, and the cable is good. Which of the following actions IS needed for this phone to work?
Please select an optionIncorrectCorrect answer: A
The phone gets no power, and since the cable and port are good, a PoE injector supplies power over the Ethernet link. MDIX and crossover cabling affect data, not power.
Was this answer correct?Question #9
A company is moving to a new building designed with a guest waiting area that has existing network ports. Which of the following practices would BEST secure the network?
Please select an optionIncorrectCorrect answer: B
One of the best practices to secure the network would be to disable unneeded switchports in the guest waiting area. This will prevent unauthorized users from connecting to the network through these ports. It's important to identify which switchports are not in use and disable them, as this will prevent unauthorized access to the network. Other practices such as ensuring all guests sign an NDA, lowering the radio strength to reduce Wi-Fi coverage in the waiting area and enabling MAC filtering to block unknown hardware addresses are not as effective in securing the network as disabling unneeded switchports. Enforcing an NDA with guests may not stop a malicious user from attempting to access the network, reducing the radio strength only limits the Wi-Fi coverage, and MAC filtering can be easily bypassed by hackers.
Was this answer correct?Question #10
A company streams video to multiple devices across a campus. When this happens, several users report a degradation of network performance. Which of the following would MOST likely address this issue?
Please select an optionIncorrectCorrect answer: A
IGMP snooping keeps multicast video streams off ports that did not request them, preventing the flooding that degrades other users' performance.
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