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2025 CompTIA High Hit-Rate Valid Dumps N10-009 Ebook

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CompTIA N10-009 Exam Syllabus Topics:

Topic
Details

Topic 1

Selection and configuration of wireless devices.

Topic 2

Cloud concepts and connectivity options, and Common networking ports.

Topic 3

Networking Concepts: For network administrators and IT support professionals, this domain covers

Topic 4

Network Security: This section of the exam for cybersecurity specialists and network security administrators covers the importance of basic network security concepts, Various types of attacks and their impact on the network, application of network security features, defense techniques, and solutions.| Network Troubleshooting: For help desk technicians and network support specialists, this section covers troubleshooting methodology, troubleshooting common cabling and physical interface issues, troubleshooting common issues with network services, and use of appropriate tools or protocols to solve networking issues.

Topic 5

Network Operations: For IT operations staff and network operations center (NOC) technicians, this part of the exam covers the purpose of organizational processes and procedures and use of network monitoring technologies.

Topic 6

OSI reference model concepts, Comparison of networking appliances, applications, and functions

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CompTIA Network+ Certification Exam Sample Questions (Q29-Q34):

NEW QUESTION # 29
A wireless technician wants to implement a technology that will allow user devices to automatically navigate to the best available frequency standard. Which of the following technologies should the technician use?

A. Directional antenna
B. Band steering
C. Autonomous access point
D. Wireless LAN controller

Answer: B

Explanation:
Band Steering: This technology enables wireless devices to connect to the most optimal frequency band (2.4 GHz or 5 GHz) by encouraging capable devices to switch to the less congested 5 GHz band. This improves overall network performance and prevents overcrowding on the 2.4 GHz band.

NEW QUESTION # 30
A network technician is troubleshooting a web application's poor performance. The office has two internet links that share the traffic load. Which of the following tools should the technician use to determine which link is being used for the web application?

A. ping
B. nslookup
C. netstat
D. tracert

Answer: D

Explanation:
* Understanding Tracert:
* Traceroute Tool: tracert (Windows) or traceroute (Linux) is a network diagnostic tool used to trace the path that packets take from a source to a destination. It lists all the intermediate routers the packets traverse.
* Determining Traffic Path:
* Path Identification: By running tracert to the web application's destination IP address, the technician can identify which route the traffic is taking and thereby determine which internet link is being used.
* Load Balancing Insight: If the office uses load balancing for its internet links, tracert can help verify which link is currently handling the traffic for the web application.
* Comparison with Other Tools:
* netstat: Displays network connections, routing tables, interface statistics, and more, but does not trace the path of packets.
* nslookup: Used for querying DNS to obtain domain name or IP address mapping, not for tracing packet routes.
* ping: Tests connectivity and measures round-trip time but does not provide path information.
* Implementation:
* Open a command prompt or terminal.
* Execute tracert [destination IP] to trace the route.
* Analyze the output to determine the path and the link being used.

NEW QUESTION # 31
After running a Cat 8 cable using passthrough plugs, an electrician notices that connected cables are experiencing a lot of cross talk. Which of the following troubleshooting steps should the electrician take first?

A. Restore default settings on the connected devices.
B. Check for radio frequency interference in the area.
C. Inspect the connectors for any wires that are touching or exposed.
D. Terminate the connections again.

Answer: C

Explanation:
Cross talk can often be caused by improper termination of cables. The first step in troubleshooting should be to inspect the connectors for any wires that might be touching or exposed. Ensuring that all wires are correctly seated and that no conductors are exposed can help reduce or eliminate cross talk. This step should be taken before attempting to re-terminate the connections or check for other sources of interference.Reference: CompTIA Network+ study materials.

NEW QUESTION # 32
A network engineer configures a new switch and connects it to an existing switch for expansion and redundancy. Users immediately lose connectivity to the network. The network engineer notes the following spanning tree information from both switches:
Switch 1
Port State Cost
1 Forward 2
2 Forward 2
Switch 2
Port State Cost
1 Forward 2
2 Forward 2
Which of the following best describes the issue?

A. The ports should use link aggregation.
B. The switch should be configured for RSTP.
C. A root bridge needs to be identified.
D. The port cost should not be equal.

Answer: C

Explanation:
The issue is that no root bridge has been identified. In STP, a root bridge is necessary to manage redundant paths and avoid loops in the network. Without a root bridge, all switches will assume they can forward traffic, causing a network loop and connectivity problems.

NEW QUESTION # 33
Users usually use RDP to connect to a terminal server with hostname TS19 that points to 10.0.100.19. However, users recently have been unable to connect to TS19. The technician pings 10.0.100.19 and gets an unreachable error. Which of the following is the most likely cause?

A. The DHCP server renewed the lease.
B. The users are on the wrong subnet.
C. The hostname was changed.
D. The IP address was not reserved.

Answer: B

Explanation:
If a ping to 10.0.100.19 is unreachable, the most likely issue is that users are on the wrong subnet and cannot communicate with the server.
Breakdown of Options:
A . The users are on the wrong subnet. ✅ Correct answer. If users are on a different subnet without proper routing, they won't reach the server.
B . The DHCP server renewed the lease. - Would change the client's IP, but the server's static IP should remain unchanged.
C . The IP address was not reserved. - DHCP reservations matter for dynamic IPs, but RDP servers typically have static IPs.
D . The hostname was changed. - Would affect DNS resolution, but pinging the IP directly would still work.
Reference:
CompTIA Network+ (N10-009) Official Study Guide - Domain 2.4: Explain subnetting concepts.

NEW QUESTION # 34
......

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