CompTIA N10-009 Questions Answers
CompTIA Network+ Certification Exam- 422 Questions & Answers
- Update Date : January 30, 2026
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CompTIA N10-009 Sample Questions
Question # 1A company's network is experiencing high latency and packet loss during peak hours. Networkmonitoring tools show increased traffic on a switch. Which of the following should a networktechnician implement to reduce the network congestion and improve performance?
A.Load balancing
B.Port mirroring
C.Quality of Service
D.Spanning Tree Protocol
Question # 2
Newly crimped 26ft (8m) STP Cat 6 patch cables were recently installed in one room to replacecables that were damaged by a vacuum cleaner. Now, users in that room are unable to connect to thenetwork. A network technician tests the existing cables first. The 177ft (54m) cable that runs fromthe core switch to the access switch on the floor is working, as is the 115ft (35m) cable run from theaccess switch to the wall jack in the office. Which of the following is the most likely reason the userscannot connect to the network?
A.Mixed UTP and STP cables are being used.
B.The patch cables are not plenum rated.
C.The cable distance is exceeded.
D.An incorrect pinout on the patch cable is being used.
Question # 3
Which of the following would be violated if an employee accidentally deleted a customer's data?
A.Integrity
B.Confidentiality
C.Vulnerability
D.Availability
Question # 4
A company is purchasing a 40Gbps broadband connection service from an ISP. Which of the followingshould most likely be configured on the 10G switch to take advantage of the new service?
A. 802.1Q tagging
B. Jumbo frames
C. Half duplex
D. Link aggregation
Question # 5
A technician needs to set up a wireless connection that utilizes MIMO on non-overlapping channels.Which of the following would be the best choice?
A. 802.11a
B. 802.11b
C. 802.11g
D. 802.11n
Question # 6
A network engineer needs to virtualize network services, including a router at a remote branchlocation. Which of the following solutions meets the requirements?
A. NFV
B. VRF
C. VLAN
D. VPC
Question # 7
A network administrator is unable to ping a remote server from a newly connected workstation thathas been added to the network. Ping to 127.0.0.1 on the workstation is failing. Which of thefollowing should the administrator perform to diagnose the problem?
A. Verify the NIC interface status.
B. Verify the network is not congested.
C. Verify the router is not dropping packets.
D. Verify that DNS is resolving correctly.
Question # 8
A network administrator is developing a method of device monitoring with the followingrequirements:Allows for explicit, by user, privilege managementIncludes centralized logging of changesOffers widely accessible remote managementProvides support of service accountsWhich of the following will most closely meet these requirements?
A. SNMP
B. API
C. SIEM
D. SSO
Question # 9
A help desk technician receives a report that users cannot access internet URLs. The technicianperforms ping tests and finds that sites fail when a URL is used but succeed when an IP isused. Which of the following tools should the technician utilize next?
A. tcpdump
B. tracert
C. nmap
D. dig
Question # 10
A company experiences an incident involving a user who connects an unmanaged switch to thenetwork. Which of the following technologies should the company implement to help avoid similarincidents without conducting an asset inventory?
A.Screened subnet
B.802.1X
C.MAC filtering
D.Port security
Question # 11
A support agent receives a report that a remote user's wired devices are constantly disconnectingand have slow speeds. Upon inspection, the support agent sees that the user's coaxial modern has asignal power of -97dB.
A.Removing any spliters connecte to the line
B.Switching the devices to wireless
C.Moving the devices closer to the modern
D.Lowering the network speed
Question # 12
A network engineer is completing a new VoIP installation, but the phones cannot find the TFTPserver to download the configuration files. Which of the following DHCP features would help thephone reach the TFTP server?
A.Exclusions
B.Lease time
C.Options
D.Scope
Question # 13
Two companies successfully merged. Following the merger, a network administrator identified aconnection bottleneck. The newly formed company plans to acquire a high-end 40GB switch andredesign the network from a three-tier model to a collapsed core. Which of the following should theadministrator do until the new devices are acquired?
A.Implement the FHRP.
B.Configure a route selection metric change.
C.Install a load balancer.
D.Enable link aggregation.
Question # 14
Network administrators are using the Telnet protocol to administer network devices that are on the192.168.1.0 subnet. Which of the following tools should the administrator use to best identify thedevices?
A.dig
B.nmap
C.tracert
D.telnet
Question # 15
A network administrator is troubleshooting issues with a DHCP server at a university. More studentshave recently arrived on campus, and the users are unable to obtain an IP address. Which of thefollowing should the administrator do to address the issue?
A.Enable IP helper.
B.Change the subnet mask.
C.Increase the scope size.
D.Add address exclusions.