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N10-009 CompTIA Network+ Certification Exam Questions and Answers

Questions 4

A help desk technician receives a report that users cannot access internet URLs. The technician performs ping tests and finds that sites fail when a URL is used but succeed when an IP is used. Which of the following tools should the technician utilize next?

Options:

A.

tcpdump

B.

tracert

C.

nmap

D.

dig

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Questions 5

A company is implementing a wireless solution in a high-density environment. Which of the following 802.11 standards is used when a company is concerned about device saturation and converage?

Options:

A.

802.11ac

B.

802.11ax

C.

802.11g

D.

802.11n

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Questions 6

Which of the following is the most cost-effective way for a network administrator to establish a persistent, secure connection between two facilities?

Options:

A.

Site-to-site VPN

B.

GRE tunnel

C.

VXLAN

D.

Dedicated line

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Questions 7

Which of the following is used to describe the average duration of an outage for a specific service?

Options:

A.

RPO

B.

MTTR

C.

RTO

D.

MTBF

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Questions 8

A company experiences an incident involving a user who connects an unmanaged switch to the network. Which of the following technologies should the company implement to help avoid similar incidents without conducting an asset inventory?

Options:

A.

Screened subnet

B.

802.1X

C.

MAC filtering

D.

Port security

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Questions 9

A company is hosting a secure that requires all connections to the server to be encrypted. A junior administrator needs to harded the web server. The following ports on the web server. The following ports on the web server are open:

N10-009 Question 9

Which of the following ports should be disabled?

Options:

A.

22

B.

80

C.

443

D.

587

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Questions 10

A network administrator notices interference with industrial equipment in the 2.4GHz range. Which of the following technologies would most likely mitigate this issue? (Select two).

Options:

A.

Mesh network

B.

5GHz frequency

C.

Omnidirectional antenna

D.

Non-overlapping channel

E.

Captive portal

F.

Ad hoc network

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Questions 11

Which of the following is the correct order of components in a bottom-up approach for the three-tier hierarchical model?

Options:

A.

Access, distribution, and core

B.

Core, root, and distribution

C.

Core, spine, and leaf

D.

Access, core, and roof

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Questions 12

A network technician is troubleshooting network latency and has determined the issue to be occuring two network switches( Switch10 and Switch11). Symptoms reported included poor video performance and slow file copying. Given the following informtion:

N10-009 Question 12

Which of the following should the technician most likely do to resolve the issue?

Options:

A.

Disable automatic negotiation on Switch11.

B.

Modify Switch10 MTU value to 1500.

C.

Configure STP on both switches.

D.

Change the native VLAN on the ports.

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Questions 13

Which of the following is an XML-based security concept that works by passing sensitve information about users, such as log-in information and attributes, to providers.

Options:

A.

IAM

B.

MFA

C.

RADIUS

D.

SAML

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Questions 14

Users are unable to access files on their department share located on flle_server 2. The network administrator has been tasked with validating routing between networks hosting workstation A and file server 2.

INSTRUCTIONS

Click on each router to review output, identity any Issues, and configure the appropriate solution

If at any time you would like to bring back the initial state of trie simulation, please click the reset All button;

N10-009 Question 14

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Options:

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Questions 15

Which of the following typically uses compromised systems that become part of a bot network?

Options:

A.

Evil twin attack

B.

DDoS attack

C.

XML injection

D.

Brute-force password attack

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Questions 16

Which of the following network devices converts wireless signals to electronic signals?

Options:

A.

Router

B.

Firewall

C.

Access point

D.

Load balancer

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Questions 17

A technician is troubleshooting a user's laptop that is unable to connect to a corporate server. The technician thinks the issue pertains to routing. Which of the following commands should the technician use to identify the issue?

Options:

A.

tcpdump

B.

dig

C.

tracert

D.

arp

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Questions 18

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?

Options:

A.

Band steering

B.

Wireless LAN controller

C.

Directional antenna

D.

Autonomous access point

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Questions 19

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?

Options:

A.

Port

B.

DNS

C.

MAC

D.

Content

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Questions 20

A network administrator is configuring a wireless network with an ESSID. Which of the following is a user benefit of ESSID compared to SSID?

Options:

A.

Stronger wireless connection

B.

Roaming between access points

C.

Advanced security

D.

Increased throughput

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Questions 21

A company reports that their facsimile machine no longer has a dial tone when trying to send a fax. The phone cable is damaged on one end. Which of the following types of connectors should a technician replace?

Options:

A.

F-type

B.

RJ45

C.

SC

D.

RJ11

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Questions 22

Which of the following troubleshooting steps would provide a change advisory board with the information needed to make a decision?

Options:

A.

Identify the problem.

B.

Develop a theory of probable cause.

C.

Test the theory to determine cause.

D.

Establish a plan of action.

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Questions 23

A network administrator needs to assign IP addresses to a newly installed network. They choose 192.168.1.0/24 as their network address and need to create three subnets with 30 hosts on each subnet. Which of the following is a valid subnet mask that will meet the requirements?

Options:

A.

255.255.255.128

B.

255.255.255.192

C.

255.255.255.224

D.

255.255.255.240

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Questions 24

A network administrator changed an external DNS to point customers to a new server. Which of the following tools should the administrator use to test the new server's configuration?

Options:

A.

ping

B.

tracert

C.

tcpdump

D.

nslookup

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Questions 25

Which of the following attacks would most likely cause duplicate IP addresses in a network?

Options:

A.

Rogue DHCP server

B.

DNS poisoning

C.

Social engineering

D.

Denial-of-service

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Questions 26

A company is purchasing a 40Gbps broadband connection service from an ISP. Which of the following should most likely be configured on the 10G switch to take advantage of the new service?

Options:

A.

802.1Q tagging

B.

Jumbo frames

C.

Half duplex

D.

Link aggregation

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Questions 27

A company upgrades its network and PCs to gigabit speeds. After the upgrade, users are not getting the expected performance. Technicians discover that the speeds of the endpoint NICs are inconsistent. Which of the following should be checked first to troubleshoot the issue?

Options:

A.

Speed mismatches

B.

Load balancer settings

C.

Flow control settings

D.

Infrastructure cabling grade

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Questions 28

An organization moved its DNS servers to new IP addresses. After this move, customers are no longer able to access the organization's website. Which of the following DNS entries should be updated?

Options:

A.

AAAA

B.

CNAME

C.

MX

D.

NS

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Questions 29

A network administrator deployed wireless networking in the office area. When users visit the outdoor patio and try to download emails with large attachments or stream training videos, they notice buffering issues. Which of the following is the most likely cause?

Options:

A.

Network congestion

B.

Wireless interference

C.

Signal degradation

D.

Client disassociation

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Questions 30

A network administrator wants to increase network security by preventing client devices from communicating directly with each other on the same subnet. Which of the following technologies should be implemented?

Options:

A.

ACL

B.

Trunking

C.

Port security

D.

Private VLAN

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Questions 31

Which of the following routing protocols needs to have an autonomous system set in order to establish communication with neighbor devices?

Options:

A.

OSPF

B.

EIGRP

C.

FHRP

D.

RIP

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Questions 32

Which of the following are the best device-hardening techniques for network security? (Select two).

Options:

A.

Disabling unused ports

B.

Performing regular scanning of unauthorized devices

C.

Monitoring system logs for irregularities

D.

Enabling logical security such as SSO

E.

Changing default passwords

F.

Ensuring least privilege concepts are in place

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Questions 33

A network administrator is implementing security zones for each department. Which of the following should the administrator use to accomplish this task?

Options:

A.

ACLs

B.

Port security

C.

Content filtering

D.

NAC

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Questions 34

Which of the following is the MOST appropriate solution to extend the network to a building located across the street from the main facility?

Options:

A.

Multimode fiber

B.

802.11ac wireless bridge

C.

Cat 6 copper

D.

Loopback adapter

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Questions 35

A network engineer is setting up a new VoIP network for a customer. The current network is segmented only for computers and servers. No additional switch ports can be used in the new network. Which of the following does the engineer need to do to configure the network correctly? (Select TWO).

Options:

A.

Change network translation definitions

B.

Enable 802.1Q

C.

Implement a routing protocol

D.

Set up voice VLANs

E.

Reconfigure the DNS

F.

Place devices in the perimeter network

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Questions 36

Which of the following should a network administrator configure when adding OT devices to an organization’s architecture?

Options:

A.

Honeynet

B.

Data-at-rest encryption

C.

Time-based authentication

D.

Network segmentation

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Questions 37

Before using a guest network, an administrator requires users to accept the terms of use Which of the following is the best way to accomplish this goal?

Options:

A.

Pre-shared key

B.

Autonomous access point

C.

Captive portal

D.

WPA2 encryption

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Questions 38

A network engineer is now in charge of all SNMP management in the organization. The engineer must use a SNMP version that does not utilize plaintext data. Which of the following is the minimum version of SNMP that supports this requirement?

Options:

A.

v1

B.

v2c

C.

v2u

D.

v3

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Questions 39

An organization requires the ability to send encrypted email messages to a partner from an email server that is hosted on premises. The organization prefers to use the standard default ports when creating firewall rules. Which of the following ports should be open to satisfy the requirements?

Options:

A.

110

B.

143

C.

587

D.

636

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Questions 40

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?

Options:

A.

802.1X

B.

Access control list

C.

Port security

D.

MAC filtering

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Questions 41

Which of the following most likely requires the use of subinterfaces?

Options:

A.

A router with only one available LAN port

B.

A firewall performing deep packet inspection

C.

A hub utilizing jumbo frames

D.

A switch using Spanning Tree Protocol

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Questions 42

You are tasked with verifying the following requirements are met in order to ensure network security.

Requirements:

Datacenter

Ensure network is subnetted to allow all devices to communicate properly while minimizing address space usage

Provide a dedicated server to resolve IP addresses and hostnames correctly and handle port 53 traffic

Building A

Ensure network is subnetted to allow all devices to communicate properly while minimizing address space usage

Provide devices to support 5 additional different office users

Add an additional mobile user

Replace the Telnet server with a more secure solution

Screened subnet

Ensure network is subnetted to allow all devices to communicate properly while minimizing address space usage

Provide a server to handle external 80/443 traffic

Provide a server to handle port 20/21 traffic

INSTRUCTIONS

Drag and drop objects onto the appropriate locations. Objects can be used multiple times and not all placeholders need to be filled.

Available objects are located in both the Servers and Devices tabs of the Drag & Drop menu.

If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.

N10-009 Question 42

Options:

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Questions 43

A company has observed increased user traffic to gambling websites and wants to limit this behavior on work computers. Which of the following should the company most likely implement?

Options:

A.

ACLs

B.

Content filter

C.

Port security

D.

Screened subnet

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Questions 44

A network technician replaced an access layer switch and needs to reconfigure it to allow the connected devices to connect to the correct networks.

INSTRUCTIONS

Click on the appropriate port(s) on Switch 1 and Switch 3 to verify or reconfigure the

correct settings:

· Ensure each device accesses only its

correctly associated network.

· Disable all unused switchports.

. Require fault-tolerant connections

between the switches.

. Only make necessary changes to

complete the above requirements.

N10-009 Question 44

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Options:

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Questions 45

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?

Options:

A.

The port cost should not be equal.

B.

The ports should use link aggregation.

C.

A root bridge needs to be identified.

D.

The switch should be configured for RSTP.

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Questions 46

Which of the following ports is used for secure email?

Options:

A.

25

B.

110

C.

143

D.

587

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Questions 47

Which of the following devices can operate in multiple layers of the OSI model?

Options:

A.

Hub

B.

Switch

C.

Transceiver

D.

Modem

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Questions 48

A network administrator is reviewing a production web server and observes the following output from the netstat command:

Which of the following actions should the network administrator take to harden the security of the web server?

Options:

A.

Disable the unused ports.

B.

Enforce access control lists.

C.

Perform content filtering.

D.

Set up a screened subnet.

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Questions 49

An administrator is configuring a switch that will be placed in an area of the office that is accessible to customers. Which of the following is the best way for the administrator to mitigate unknown devices from connecting to the network?

Options:

A.

SSE

B.

ACL

C.

Perimeter network

D.

802.1x

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Questions 50

A network administrator determines that some switch ports have more errors present than expected. The administrator traces the cabling associated with these ports. Which of the following would most likely be causing the errors?

Options:

A.

arp

B.

tracert

C.

nmap

D.

ipconfig

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Questions 51

Which of the following would be violated if an employee accidentally deleted a customer's data?

Options:

A.

Integrity

B.

Confidentiality

C.

Vulnerability

D.

Availability

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Questions 52

After installing a series of Cat 8 keystones, a data center architect notices higher than normal interference during tests. Which of the following steps should the architect take to troubleshoot the issue?

Options:

A.

Check to see if the end connections were wrapped in copper tape before terminating.

B.

Use passthrough modular crimping plugs instead of traditional crimping plugs.

C.

Connect the RX/TX wires to different pins.

D.

Run a speed test on a device that can only achieve 100Mbps speeds.

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Questions 53

A network engineer is completing a new VoIP installation, but the phones cannot find the TFTP server to download the configuration files. Which of the following DHCP features would help the phone reach the TFTP server?

Options:

A.

Exclusions

B.

Lease time

C.

Options

D.

Scope

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Questions 54

Which of the following protocols has a default administrative distance value of 90?

Options:

A.

RIP

B.

EIGRP

C.

OSPF

D.

BGP

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Questions 55

A network manager wants to implement a SIEM system to correlate system events. Which of the following protocols should the network manager verify?

Options:

A.

NTP

B.

DNS

C.

LDAP

D.

DHCP

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Questions 56

Which of the following IP transmission types encrypts all of the transmitted data?

Options:

A.

ESP

B.

AH

C.

GRE

D.

UDP

E.

TCP

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Questions 57

A network technician needs to install patch cords from the UTP patch panel to the access switch for a newly occupied set of offices. The patch panel is not labeled for easy jack identification. Which of the following tools provides the easiest way to identify the appropriate patch panel port?

Options:

A.

Toner

B.

Laptop

C.

Cable tester

D.

Visual fault locator

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Questions 58

Which of the following should be used to obtain remote access to a network appliance that has failed to start up properly?

Options:

A.

Crash cart

B.

Jump box

C.

Secure Shell (SSH)

D.

Out-of-band management

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Questions 59

Which of the following is the next step to take after successfully testing a root cause theory?

Options:

A.

Determine resolution steps.

B.

Duplicate the problem in a lab.

C.

Present the theory for approval.

D.

Implement the solution to the problem.

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Questions 60

A technician is planning an equipment installation into a rack in a data center that practices hot aisle/cold aisle ventilation. Which of the following directions should the equipment exhaust face when installed in the rack?

Options:

A.

Sides

B.

Top

C.

Front

D.

Rear

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Questions 61

Which of the following are environmental factors that should be considered when installing equipment in a building? (Select two).

Options:

A.

Fire suppression system

B.

UPS location

C.

Humidity control

D.

Power load

E.

Floor construction type

F.

Proximity to nearest MDF

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Questions 62

Which of the following is the most closely associated with segmenting compute resources within a single cloud account?

Options:

A.

Network security group

B.

laaS

C.

VPC

D.

Hybrid cloud

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Questions 63

An employee in a corporate office clicks on a link in an email that was forwarded to them. The employee is redirected to a splash page that says the page is restricted. Which of the following security solutions is most likely in place?

Options:

A.

DLP

B.

Captive portal

C.

Content filtering

D.

DNS sinkholing

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Questions 64

Which of the following routing protocols uses an autonomous system number?

Options:

A.

IS-IS

B.

EIGRP

C.

OSPF

D.

BGP

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Questions 65

After providing a username and password, a user must input a passcode from a phone application. Which of the following authentication technologies is used in this example?

Options:

A.

SSO

B.

LDAP

C.

MFA

D.

SAML

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Questions 66

A network administrator needs to connect a department to a new network segment. They need to use a DHCP server located on another network. Which of the following can the administrator use to complete this task?

Options:

A.

IP Helper

B.

Reservation

C.

Exclusion

D.

Scope

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Questions 67

A Chief Executive Officer (CEO) of a company purchases a new phone that will be used while traveling to different countries. The CEO needs to be able to place outgoing calls and receive incoming calls on the phone using a SIM card. Which of the following cellular technologies does the CEO's phone need?

Options:

A.

WDMA

B.

CDMA

C.

GSM

D.

SLA

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Questions 68

Which of the following should be configured so users can authenticate to a wireless network using company credentials?

Options:

A.

SSO

B.

SAML

C.

MFA

D.

RADIUS

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Questions 69

Which of the following attacks utilizes a network packet that contains multiple network tags?

Options:

A.

MAC flooding

B.

VLAN hopping

C.

DNS spoofing

D.

ARP poisoning

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Questions 70

A network administrator needs to create a way to redirect a network resource that has been on the local network but is now hosted as a SaaS solution. Which of the following records should be used to accomplish the task?

Options:

A.

TXT

B.

AAA

C.

PTR

D.

CNAME

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Questions 71

A VoIP phone is plugged in to a port but cannot receive calls. Which of the following needs to be done on the port to address the issue?

Options:

A.

Trunk all VLANs on the port.

B.

Configure the native VLAN.

C.

Tag the traffic to voice VLAN.

D.

Disable VLANs.

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Questions 72

Two companies successfully merged. Following the merger, a network administrator identified a connection bottleneck. The newly formed company plans to acquire a high-end 40GB switch and redesign the network from a three-tier model to a collapsed core. Which of the following should the administrator do until the new devices are acquired?

Options:

A.

Implement the FHRP.

B.

Configure a route selection metric change.

C.

Install a load balancer.

D.

Enable link aggregation.

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Questions 73

Which of the following disaster recovery concepts is calculated by dividing the total hours of operation by the total number of units?

Options:

A.

MTTR

B.

MTBF

C.

RPO

D.

RTO

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Questions 74

Which of the following can support a jumbo frame?

Options:

A.

Access point

B.

Bridge

C.

Hub

D.

Switch

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Questions 75

A network administrator is configuring a network for a new site that will have 150 users. Within the next year, the site is expected to grow by ten users. Each user will have two IP addresses (one for a computer and one for a phone). Which of the following classful IPv4 address ranges will be best-suited for the network?

Options:

A.

Class D

B.

Class B

C.

Class A

D.

Class C

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Questions 76

Which of the following protocols is used to route traffic on the public internet?

Options:

A.

BGP

B.

OSPF

C.

EIGRP

D.

RIP

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Questions 77

Which of the following steps of the troubleshooting methodology should a technician take to confirm a theory?

Options:

A.

Duplicate the problem.

B.

Identify the symptoms.

C.

Gather information.

D.

Determine any changes.

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Questions 78

A network technician needs to resolve some issues with a customer's SOHO network. The

customer reports that some of the PCs are not connecting to the network, while others

appear to be working as intended.

INSTRUCTIONS

Troubleshoot all the network components.

Review the cable test results first, then diagnose by clicking on the appropriate PC,

server, and Layer 2 switch.

Identify any components with a problem and recommend a solution to correct each

problem.

If at any time you would like to bring back

the initial state of the simulation, please

click the Reset All button.

N10-009 Question 78

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Options:

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Questions 79

A university is implementing a new campus wireless network. A network administrator needs to configure the network to support a large number of devices and high-bandwidth demands from students.

Which of the following wireless technologies should the administrator consider for this scenario?

Options:

A.

Bluetooth

B.

Wi-Fi 6E

C.

5G

D.

LTE

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Questions 80

A company implements a video streaming solution that will play on all computers that have joined a particular group, but router ACLs are blocking the traffic. Which of the following is the most appropriate IP address that will be allowed in the ACL?

Options:

A.

127.0.0.1

B.

172.17.1.1

C.

224.0.0.1

D.

240.0.0.1

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Questions 81

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

Options:

A.

Site-to-site VPN

B.

Telnet

C.

Console

D.

Secure Shell

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Questions 82

A small business is deploying new phones, and some of the phones have full HD videoconferencing features. The Chief 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?

Options:

A.

A VLAN with 100Mbps speed limits

B.

An IP helper to direct VoIP traffic

C.

A smaller subnet mask

D.

Full duplex on all user ports

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Questions 83

A company is expanding to another floor in the same building. The network engineer configures a new switch with the same VLANs as the existing stack. When the network engineer connects the new switch to the existing stack, all users lose connectivity. Which of the following is the MOST likely reason?

Options:

A.

The new switch has unused ports disabled

B.

The new switch does not have a default gateway

C.

The new switch is connected to an access port

D.

The new switch is in a spanning tree loop

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Exam Code: N10-009
Exam Name: CompTIA Network+ Certification Exam
Last Update: Apr 27, 2025
Questions: 277

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