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CompTIA Certification
N10-009 Exam
CompTIA.N10-009.v2026-04-15.q384 Dumps

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Question 146

A network administrator wants users to be able to authenticate to the corporate network using a port-based authentication framework when accessing both wired and wireless devices. Which of the following is the best security feature to accomplish this task?

A.802.1X
B.MAC filtering
C.Access control list
D.Port security

Correct Answer: A

802.1X is a port-based network access control (PNAC) protocol that provides an authentication mechanism to devices wishing to connect to a LAN or WLAN. It is widely used for secure network access, ensuring that only authenticated devices can access the network, whether they are connecting via wired or wireless means.
802.1X works in conjunction with an authentication server, such as RADIUS, to validate the credentials of devices trying to connect.References: CompTIA Network+ study materials.

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Question 147

A company wants to implement data loss prevention by restricting user access to social media platforms and personal cloud storage on workstations. Which of the following types of filtering should the company deploy to achieve these goals?

A.Port
B.MAC
C.Content
D.DNS

Correct Answer: C

To implement data loss prevention (DLP) and restrict user access to social media platforms and personal cloud storage, the company should deploy content filtering. Content filtering examines the data being transmitted over the network and can block specific types of content or websites based on predefined policies. This type of filtering is effective in preventing access to specific web services and ensuring that sensitive information does not leave the network through unauthorized channels. Port, DNS, and MAC filtering serve different purposes and are not as effective for DLP in this context.
Reference: CompTIA Network+ Certification Exam Objectives - Network Security section.

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Question 148

Which of the following could provide a lightweight and private connection to a remote box?

A.Site-to-site VPN
B.Telnet
C.Console
D.Secure Shell

Correct Answer: D

Secure Shell (SSH)is a protocol used tosecurely access remote devices over an unsecured network. It provides encrypted command-line access and is a lightweight and secure method of remote administration.
* A. Site-to-site VPNconnects entire networks, not just a single host.
* B. Telnetis not secure; it transmits data (including credentials) in plaintext.
* C. Consoleaccess is direct via serial cable, not remote.
#Reference:
CompTIA Network+ N10-009 Official Objectives: 2.6 - Configure and troubleshoot remote access.

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Question 149

After a networking intern plugged in a switch, a significant number of users in a building lost connectivity.
Which of the following is the most likely root cause?

A.VTP update
B.Port security issue
C.LLDP misconfiguration
D.Native VLAN mismatch

Correct Answer: D

When a switch is improperly connected to a network, it can cause widespread connectivity issues, especially if there's a misconfiguration in VLAN settings. A Native VLAN mismatch occurs when two switches connected via a trunk link have different native VLANs configured for untagged traffic. This can cause traffic to be sent to the wrong VLAN or dropped, resulting in connectivity loss for users.
Scenario Analysis: The intern likely connected the switch without ensuring that the trunk port's native VLAN matched the existing network configuration. This is a common issue in Cisco-based networks when trunk links are misconfigured.
Why not VTP update? VLAN Trunking Protocol (VTP) updates propagate VLAN configurations across switches. While a VTP misconfiguration could cause issues, it's less likely to immediately disrupt connectivity for many users unless the VTP server deleted critical VLANs, which is not implied here.
Why not Port security issue? Port security restricts access based on MAC addresses, typically affecting individual ports, not causing widespread outages.
Why not LLDP misconfiguration? Link Layer Discovery Protocol (LLDP) is used for device discovery, and misconfiguration is unlikely to cause a broad loss of connectivity.
Reference:CompTIA Network+ N10-009 Objective 2.2: Explain the purpose of network segmentation and VLAN configuration. The CompTIA Network+ Study Guide (e.g., Chapter 6: Switching) discusses VLAN trunking and the importance of matching native VLANs on trunk links to prevent connectivity issues. Native VLAN mismatches are highlighted as a common cause of network disruptions.

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Question 150

Which of the following is the best way to reduce the likelihood of electrostatic discharge?

A.Uninterruptible power supply
B.Surge protector
C.Power distribution units
D.Temperature and humidity control

Correct Answer: D

Temperature and humidity controlis the best way to reduce the risk of electrostatic discharge (ESD). Dry environments significantly increase the likelihood of static buildup, which can discharge and damage sensitive components. By controlling humidity, the environment becomes less prone to static electricity.
Reference:

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