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CompTIA N10-009 Exam Syllabus Topics:
Topic
Details
Topic 1
Topic 2
Topic 3
Topic 4
Topic 5
Topic 6
CompTIA Network+ Certification Exam Sample Questions (Q387-Q392):
NEW QUESTION # 387
A user's home mesh wireless network is experiencing latency issues. A technician has:
Performed a speed test.
Rebooted the devices.
Performed a site survey.
Performed a wireless packet capture.
The technician reviews the following information:
The technician notices in the packet capture that frames were retransmitted. Which of the following is the most likely cause of the user's network issue?
Answer: C
Explanation:
Comprehensive and Detailed Step-by-Step
Too much overlap on the same channel (all devices on channel 11) causes interference, leading to retransmissions and high latency.
Same SSIDs (A) are expected in mesh networks.
Device compatibility (C) would show different symptoms.
Node power (D) affects coverage, not congestion.
Reference: CompTIA Network+ N10-009 Official Documentation - Wireless Troubleshooting & Signal Interference.
NEW QUESTION # 388
A network technician needs to resolve some issues with a customer's SOHO network.
The customer reports that some of the devices are not connecting to the network, while others appear to work as intended.
INSTRUCTIONS
Troubleshoot all the network components and review the cable test results by Clicking on each device and cable.
Diagnose the appropriate component(s) by identifying any components with a problem and recommend a solution to correct each problem.
Cable Test Results:
Cable 1:
Cable 2:
Cable 3:
Cable 4:
Answer:
Explanation:
See the Explanation for detailed information on this simulation.
Explanation:
(Note: Ips will be change on each simulation task, so we have given example answer for the understanding) To troubleshoot all the network components and review the cable test results, you can use the following steps:
* Click on each device and cable to open its information window.
* Review the information and identify any problems or errors that may affect the network connectivity or
* performance.
* Diagnose the appropriate component(s) by identifying any components with a problem and recommend a solution to correct each problem.
* Fill in the remediation form using the drop-down menus provided.
Here is an example of how to fill in the remediation form for PC1:
* The component with a problem is PC1.
* The problem is Incorrect IP address.
* The solution is Change the IP address to 192.168.1.10.
You can use the same steps to fill in the remediation form for other components.
To enter commands in each device, you can use the following steps:
* Click on the device to open its terminal window.
* Enter the command ipconfig /all to display the IP configuration of the device, including its IP address, subnet mask, default gateway, and DNS servers.
* Enter the command ping <IP address> to test the connectivity and reachability to another device on the network by sending and receiving echo packets. Replace <IP address> with the IP address of the destination device, such as 192.168.1.1 for Core Switch 1.
* Enter the command tracert <IP address> to trace the route and measure the latency of packets from the device to another device on the network by sending and receiving packets with increasing TTL values.
Replace <IP address> with the IP address of the destination device, such as 192.168.1.1 for Core Switch
1.
Here is an example of how to enter commands in PC1:
* Click on PC1 to open its terminal window.
* Enter the command ipconfig /all to display the IP configuration of PC1. You should see that PC1 has an incorrect IP address of 192.168.2.10, which belongs to VLAN 2 instead of VLAN 1.
* Enter the command ping 192.168.1.1 to test the connectivity to Core Switch 1. You should see that PC1 is unable to ping Core Switch 1 because they are on different subnets.
* Enter the command tracert 192.168.1.1 to trace the route to Core Switch 1. You should see that PC1 is unable to reach Core Switch 1 because there is no route between them.
You can use the same steps to enter commands in other devices, such as PC3, PC4, PC5, and Server 1.
NEW QUESTION # 389
Asmall businessis deploying new phones, and some of the phones havefull HD videoconferencing features.
TheChief Information Officer (CIO)is concerned that the network might not be able to handle the traffic if it reaches a certain threshold. Which of the following can the network engineer configure to help ease these concerns?
Answer: A
Explanation:
Comprehensive and Detailed Explanation:
Full duplex modeallows devices tosend and receive data simultaneously, improving network performance andreducing congestion, which iscritical for VoIP and video conferencing.
Breakdown of Options:
* A. A VLAN with 100Mbps speed limits- VLANssegment trafficbutlimiting speedsto100Mbpswould worsenvideo performance.
* B. An IP helper to direct VoIP traffic-IP helperis used forDHCP relay,notfor VoIP optimization.
* C. A smaller subnet mask- A smaller subnet reducesIP address availabilitybut doesnot improve network performance.
* D. Full duplex on all user ports-Correct answer.Full duplex eliminates collisions, allowingbetter VoIP and video performance.
NEW QUESTION # 390
Which of the following steps in the troubleshooting methodology would be next after putting preventive measures in place?
Answer: D
Explanation:
After implementing a solution and putting preventive measures in place, the next step is to verify that the system is functioning correctly. This ensures that the issue has been fully resolved.
NEW QUESTION # 391
Which of the following services runs on port 636?
Answer: D
Explanation:
LDAP over SSL (LDAPS) uses port 636 to provide secure, encrypted authentication for directory services.
Breakdown of Options:
A: SMTP (Simple Mail Transfer Protocol) - Uses port 25, not 636.
B: Syslog - Uses port 514 (UDP), not 636.
C: TFTP (Trivial File Transfer Protocol) - Uses port 69 (UDP), not 636.
D: LDAPS (Lightweight Directory Access Protocol Secure) - # Correct answer. Uses port 636 for secure directory authentication.
Reference:
CompTIA Network+ (N10-009) Official Study Guide - Domain 3.1: Compare and contrast network protocols.
RFC 4511: Lightweight Directory Access Protocol (LDAP)
NEW QUESTION # 392
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