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CompTIA N10-008 Sample Question Answers
Question # 1
Several users with older devices are reporting intermittent connectivity while in an outdoor patio area. After
some research, the network administrator determines that an outdoor WAP might help with the issue.
However, the company does not want the signal to bleed into the building and cause interference. Which of the
following should the network administrator perform to BEST resolve the issue?
A. Disable the SSID broadcast on the WAP in the patio area. B. Install a WAP and enable 5GHz only within the patio area. C. Install a directional WAP in the direction of the patio. D. Install a repeater on the back wall of the patio area.
Answer: C
Question # 2
Which of the following is the NEXT step to perform network troubleshooting after identifying an issue?
A. Implement a solution. B. Establish a theory. C. Escalate the issue D. Document the findings.
Answer: B
Explanation
1 Identify the Problem.
2 Develop a Theory.
3 Test the Theory.
4 Plan of Action.
5 Implement the Solution.
6 Verify System Functionality.
7 Document the Issue.
Question # 3
Which of the following is the IEEE link cost for a Fast Ethernet interface in STP calculations?
A. 2 B. 4 C. 19 D. 100
Answer: D Explanation The IEEE standard for link cost for a Fast Ethernet interface is 100, and for a Gigabit Ethernet interface is 19.
These values are based on the bandwidth of the interface, with lower values indicating a higher-bandwidth
interface.
Question # 4
An ISP configured an internet connection to provide 20Mbps, but actual data rates are occurring at 10Mbps and causing a significant delay in data transmission. Which of the following specifications should the ISP check?
A. Throughput B. Latency C. Bandwidth D. Jitter
Answer: A
Explanation
Throughput is the actual amount of data that can be transferred over a network in a given time. Throughput can be affected by various factors such as congestion, interference, errors, or hardware limitations. If the throughput is lower than the configured internet connection speed, it can cause a significant delay in data transmission. The ISP should check the throughput and identify the source of the problem.
References: Network+ Study Guide Objective 2.2: Explain the concepts and characteristics of routing and switching.
Question # 5
A technician is equipped with a tablet, a smartphone, and a laptop to troubleshoot a switch with the help of
support over the phone. However, the technician is having issues interconnecting all these tools in
troubleshooting the switch. Which Of the following should the technician use to gain connectivity?
A. PAN B. WAN C. LAN D. MAN
Answer: A Explanation A PAN stands for Personal Area Network and it is a type of network that connects devices within a small
range, such as a few meters. A PAN can use wireless technologies such as Bluetooth or Wi-Fi to interconnect
devices such as tablets, smartphones, and laptops. A technician can use a PAN to gain connectivity among
these tools and troubleshoot the switch. References: Network+ Study Guide Objective 1.2: Explain devices, applications, protocols and services at
their appropriate OSI layers.
Question # 6
A network engineer developed a plan of action to resolve an ongoing issue. Which of the following steps
should the engineer take NEXT?
A. Verify full system functionality and implement preventative measures. B. Implement the solution to resolve the problem. C. Document findings, actions, outcomes, and lessons learned. D. Establish a theory of probable cause.
Answer: B Explanation Network troubleshooting is a repeatable process, which means that you can break it down into clear steps that anyone can follow Identify the Problem. ... Develop a Theory. ...
Test the Theory. ... Plan of Action. ... Implement the Solution. ...
Verify System Functionality. ... Document the Issue. Theory of probable cause is before Plan of action.
https://www.comptia.org/content/guides/a-guide-to-network-troubleshooting
Question # 7
An IT technician installs five old switches in a network. In addition to the low port rates on these switches, they also have improper network configurations. After three hours, the network becomes overwhelmed by continuous traffic and eventually shuts down. Which Of the following is causing the issue?
A. Broadcast storm B. Collisions C. IP settings D. Routing loops
Answer: A
Explanation
A broadcast storm is a situation where a network is flooded with broadcast packets, which are sent to all devices on the network. This can consume bandwidth, cause congestion, and degrade performance. A broadcast storm can be caused by improper network configurations, such as loops or misconfigured switches.
In this scenario, the old switches may have created loops or failed to filter broadcast packets, resulting in a broadcast storm that overwhelmed the network.
References: CompTIA Network+ Certification Exam Objectives Version 7.0 (N10-007), Objective 2.4: Given a scenario, use appropriate software tools to troubleshoot connectivity issues.
Question # 8
A company is designing a SAN and would like to use STP as its medium for communication. Which of the
following protocols would BEST suit me company's needs?
A. SFTP B. Fibre Channel C. iSCSI D. FTP
Answer: B Explanation A SAN also employs a series of protocols enabling software to communicate or prepare data for storage. The
most common protocol is the Fibre Channel Protocol (FCP), which maps SCSI commands over FC
technology. The iSCSI SANs will employ an iSCSI protocol that maps SCSI commands over TCP/IP. STP (Spanning Tree Protocol) is a protocol used to prevent loops in Ethernet networks, and it is not a medium
for communication in a storage area network (SAN). However, Fibre Channel is a protocol that is specifically
designed for high-speed data transfer in SAN environments. It is a dedicated channel technology that provides
high throughput and low latency, making it ideal for SANs. Therefore, Fibre Channel would be the best protocol for the company to use for its SAN. SFTP (Secure File Transfer Protocol), iSCSI (Internet Small
Computer System Interface), and FTP (File Transfer Protocol) are protocols used for transferring files over a
network and are not suitable for use in a SAN environment.
Question # 9
An engineer needs to verity the external record tor SMTP traffic. The engineer logged in to the server and entered the nslookup command. Which of the following commands should the engineer send before entering the DNS name?
A. set type=A B. is -d company-mail.com C. set domain=company.mail.com D. set querytype=Mx
Answer: D
Question # 10
A company wants to invest in new hardware for the core network infrastructure. The management team
requires that the infrastructure be capable of being repaired in less than 60 minutes if any major part fails.
Which of the following metrics is MOST likely associated with this requirement?
A. RPO B. MTTR C. FHRP D. MTBF
Answer: B Explanation MTTR is directly related to how quickly a system can be repaired if any major part fails 3. The management
team requires that the infrastructure be capable of being repaired in less than 60 minutes, which means they
have a low MTTR requirement. MTTR stands for Mean Time To Repair and is a metric used to measure the average amount of time it takes to
repair a failed component or system. In this case, the requirement is for the infrastructure to be capable of
being repaired in less than 60 minutes if any major part fails, which means the MTTR should be less than 60
minutes.
Question # 11
A new office space is being designed. The network switches are up. but no services are running yet A network engineer plugs in a laptop configured as a DHCP client to a switch Which ol the following IP addresses should be assigned to the laptop?
A. 10.1.1.1 B. 169.254.1.128 C. 172 16 128 128 D. 192 168.0.1
Answer: B
Explanation
When a DHCP client is connected to a network and no DHCP server is available, the client can automatically configure a link-local address in the 169.254.0.0/16 range using the Automatic Private IP Addressing (APIPA) feature. So, the correct answer is option B, 169.254.1.128. This is also known as an APIPA address.
Reference: CompTIA Network+ Study Guide, Exam N10-007, Fourth Edition, by Todd Lammle (Chapter 4: IP Addressing)
Question # 12
An organization is interested in purchasing a backup solution that supports the organization's goals. Which of the following concepts would specify the maximum duration that a given service can be down before
impacting operations?
A. MTTR B. RTO C. MTBF D. RPO
Answer: B Explanation The maximum duration that a given service can be down before it impacts operations is often referred to as the
Recovery Time Objective (RTO). RTO is a key consideration in any backup and disaster recovery plan, as it
determines how quickly the organization needs to be able to recover from a disruption or failure. It is typically
expressed in terms of time, and it helps to inform the design and implementation of the backup solution. For
example, if an organization has a critical service that must be available 24/7, it may have a very low RTO,
requiring that the service be restored within a matter of minutes or even seconds. On the other hand, if the
service can be down for a longer period of time without significantly impacting operations, the organization
may have a higher RTO. When selecting a backup solution, it is important to consider the organization's RTO
requirements and ensure that the solution is capable of meeting those needs. A solution that does not meet the
organization's RTO requirements may not be sufficient to ensure the availability of critical services in the
event of a disruption or failure.
Question # 13
A desktop support department has observed slow wireless speeds for a new line of laptops using the organization's standard image. No other devices have experienced the same issue. Which of the following should the network administrator recommend troubleshooting FIRST to resolve this issue?
A. Increasing wireless signal power B. Installing a new WAP C. Changing the protocol associated to the SSID D. Updating the device wireless drivers
Answer: D
Explanation
Wireless drivers can affect the performance and compatibility of your wireless connection. If only a new line 5 of laptops using the organization’s standard image has experienced slow wireless speeds, it could be that their wireless drivers are outdated or incompatible with the network. Updating the device wireless drivers could
resolve this issue.
Wireless drivers play an important role in the performance of a wireless connection, as they control how the device interacts with the wireless network. If the laptops in question are using an outdated version of the wireless driver, it could be causing the slow speeds. The network administrator should recommend updating the device wireless drivers first to see if this resolves the issue.
Question # 14
After rebooting an AP a user is no longer able to conned to me enterprise LAN A technician plugs a laptop In to the same network jack and receives the IP 169.254 0 200. Which of the following is MOST likely causing the issue?
A. DHCP scope exhaustion B. Signal attenuation C. Channel overlap D. Improper DNS configuration
Answer: A
Explanation
DHCP scope exhaustion occurs when the number of available IP addresses to be leased from a DHCP server have been used up. This could be caused by a large number of clients on the network, or a misconfigured DHCP scope. When this happens, clients will be assigned an IP address from the APIPA range (169.254.0.0 to 169.254.255.255). To resolve this issue, the DHCP scope needs to be expanded or adjusted to accommodate the number of clients on the network.
Question # 15
A cafeteria is lacing lawsuits related to criminal internet access that was made over its guest network. The
marketing team, however, insists on keeping the cafeteria phone number as the wireless passphrase. Which of
the following actions would Improve wireless security while accommodating the marketing team and
accepting the terms of use?
A. Setting WLAN security to use EAP-TLS B. Deploying a captive portal tor user authentication C. Using geofencing to limit the area covered by the WLAN D. Configuring guest network isolation
Answer: B Explanation A captive portal is a web page that is presented to a user before they are allowed to access a network. It is used
to authenticate users and to ensure that all users have accepted the terms of use for the network. By deploying
a captive portal, the cafeteria can require users to enter their phone number as the passphrase, while still
providing an additional layer of security. Reference: CompTIA Network+ Study Guide, 8th Edition, page 182.
Question # 16
A network engineer is concerned about VLAN hopping happening on the network. Which of the following should the engineer do to address this concern?
A.Configure private VLANS. B. Change the default VLAN. C. Implement ACLs on the VLAN D. Enable dynamic ARP inspection
Answer: B
Explanation
VLAN hopping is a type of attack that allows an attacker to access or manipulate traffic on a different VLAN
than the one they are connected to. One way to prevent VLAN hopping is to change the default VLAN on a
switch. The default VLAN is the VLAN that is assigned to all ports on a switch by default, usually VLAN 1. If
an attacker connects to an unused port on a switch that has not been configured with a specific VLAN, they
can access or spoof traffic on the default VLAN. By changing the default VLAN to an unused or isolated
VLAN, the network administrator can prevent unauthorized access or interference with legitimate traffic on
A newly installed multifunction copier needs to be set up so scanned documents can be emailed to recipients.
Which of the following ports from the copier's IP address should be allowed?
A. 22 B. 25 C. 53 D. 80
Answer: B Explanation Port 25 is the port number that is commonly used for Simple Mail Transfer Protocol (SMTP), which is a
protocol that allows sending and receiving email messages over a network1. Port 25 from the copier’s IP
address should be allowed so that scanned documents can be emailed to recipients. Port 22 is the port number that is commonly used for Secure Shell (SSH), which is a protocol that allows
secure and encrypted remote access and control of a device over a network1. Port 22 from the copier’s IP
address is not necessary for emailing scanned documents.
Port 53 is the port number that is commonly used for Domain Name System (DNS), which is a protocol that allows resolving domain names to IP addresses and vice versa on a network1. Port 53 from the copier’s IP
address is not necessary for emailing scanned documents. Port 80 is the port number that is commonly used for Hypertext Transfer Protocol (HTTP), which is a protocol
that allows transferring web pages and other resources over a network1. Port 80 from the copier’s IP address is
not necessary for emailing scanned documents.
Question # 18
A network administrator is troubleshooting a client's device that cannot connect to the network. A physical inspection of the switch shows the RJ45 is connected. The NIC shows no activity lights. The network administrator moves the device to another location and connects to the network without issues. Which Of the following tools would be the BEST option for the network administrator to use to further troubleshoot?
A. Tone generator B. Multimeter C. Optical time-domain reflectometer D. Cable tester
Answer: D
Explanation
A cable tester is a tool that can verify the integrity and functionality of a network cable. It can measure the electrical characteristics of the cable, such as resistance, capacitance, and impedance, and detect any faults or
defects, such as shorts, opens, or crosstalk. A cable tester can help the network administrator troubleshoot the problem by determining if the cable is faulty or not. A tone generator is a tool that can send an audible signal
through a cable to help locate and identify it. A multimeter is a tool that can measure voltage, current, and resistance of electrical circuits. An optical time-domain reflectometer (OTDR) is a tool that can test the quality
and length of fiber optic cables.
References: CompTIA Network+ Certification Exam Objectives Version 7.0 (N10-007), Objective 2.3: Given a scenario, use the appropriate tool to support wired or wireless networks.
Question # 19
An organization would like to implement a disaster recovery strategy that does not require a facility agreement
or idle hardware. Which of the following strategies MOST likely meets the organization's requirements?
A. Cloud site B. Cold site C. Warm site D. Hot site
Answer: A Explanation A cloud site is a type of disaster recovery site that uses cloud computing services to provide backup and
recovery of data and applications in the event of a disaster1. A cloud site does not require a facility agreement
or idle hardware, as the cloud provider manages the infrastructure and resources on demand. A cloud site can
also offer scalability, flexibility, and cost-effectiveness compared to other types of disaster recovery sites.
Question # 20
A technician is tasked with setting up a mail server and a DNS server. The mail port should be secured and
have the ability to transfer large files. Which of the following ports should be opened? (Select TWO).
A. 22 B. 53 C. 110 D. 389 E. 995 F. 3389
Answer: B E Explanation Port 53 is used for DNS, which is a service that translates domain names into IP addresses. Port 995 is used for
POP3S, which is a protocol for receiving email messages securely. POP3S supports large file transfers and
encryption. Therefore, these two ports should be opened for the mail server and the DNS server project
Question # 21
An IT administrator received an assignment with the following objectives. Conduct a total scan within the company's network tor all connected hosts
. Detect all the types of operating systems running on all devices. Discover all services offered by hosts on the network. Find open ports and detect security risks.Which of the following command-line tools can be used to achieve these objectives?
A. nmap B. arp C. netatat D. tcpdump
Answer: A Explanation Nmap (Network Mapper) is a free and open source command line tool that can be used to scan a network for
all connected hosts, detect the types of operating systems running on all devices, discover all services offered
by hosts on the network, find open ports, and detect security risks. Nmap is commonly used by system administrators and security professionals to audit a network’s security and identify possible vulnerabilities.
Nmap can be used to discover active hosts, scan ports, fingerprint operating systems, detect running services,
and more. Reference: CompTIA Network+ Study Manual, 8th Edition, page 592.
Question # 22
A PC and a network server have no network connectivity, and a help desk technician is attempting to resolve
the issue. The technician plans to run a constant ping command from a Windows workstation while testing
various possible reasons for the connectivity issue. Which of the following should the technician use?
A. ping —w B. ping -i C. ping —s D. ping —t
Answer: D Explanation ping -t is an option for the ping command in Windows that allows the user to send continuous ping requests to
a target until stopped by pressing Ctrl-C. This can help the technician run a constant ping command while
testing various possible reasons for the connectivity issue. ping -w is an option for the ping command in
Windows that allows the user to specify a timeout value in milliseconds for each ping request. ping -i is an
option for the ping command in Linux that allows the user to specify the time interval in seconds between each
ping request. ping -s is an option for the ping command in Linux that allows the user to specify the size of the
data payload in bytes for each ping request. References: How to Use the Ping Command in Windows - Lifewire
(https://www.lifewire.com/ping-command-2618099)
Question # 23
A network administrator responds to a support ticket that was submitted by a customer who is having issues
connecting to a website inside of the company network The administrator verities that the customer could not
connect to a website using a URL Which of the following troubleshooting steps would be BEST for the
administrator to take?
A. Check for certificate issues B. Contact the ISP C. Attempt to connect to the site via IP address D. Check the NTP configuration.
Answer: C Explanation The best option for the administrator to take would be to attempt to connect to the site via IP address. This will
help to determine if the issue is related to the website's DNS address or if the site itself is not accessible.
Checking for certificate issues may be necessary, but this should be done after the administrator has attempted
to connect to the site via IP address. Contacting the ISP is unnecessary since the issue is related to the website
inside of the company network, and checking the NTP configuration is not relevant to this issue. When a customer is having issues connecting to a website using a URL, one of the first troubleshooting steps a
network administrator should take is attempting to connect to the site using the IP address of the website. This
will help to determine if the issue is related to a DNS resolution problem or a connectivity problem. If the
administrator is able to connect to the website using the IP address, then the issue may be related to a DNS problem. However, if the administrator is still unable to connect, then the issue may be related to a
connectivity problem. In either case, further troubleshooting steps will be necessary. Checking for certificate
issues or NTP configuration, and contacting the ISP would not be the BEST initial steps in this scenario.
Question # 24
Network traffic is being compromised by DNS poisoning every time a company's router is connected to the
internet. The network team detects a non-authorized DNS server being assigned to the network clients and
remediates the incident by setting a trusted DNS server, but the issue occurs again after internet exposure.
Which of the following best practices should be implemented on the router?
A. Change the device's default password. B. Disable router advertisement guard. C. Activate control plane policing. D. Disable unneeded network services.
Answer: A
Question # 25
A network administrator installed a new data and VoIP network. Users are now experiencing poor call quality
when making calls. Which of the following should the administrator do to increase VoIP performance?
A. Configure a voice VLAN. B. Configure LACP on all VoIP phones. C. Configure PoE on the network. D. Configure jumbo frames on the network.
Answer: A Explanation "Benefits of Voice VLAN It ensures that your VoIP (Voice over Internet Phone) devices do not have to contend directly with all the
broadcasts and other traffic from the data VLAN. A voice VLAN can simplify network configuration in some
circumstances." https://community.fs.com/blog/auto-voip-vs-voice-vlan-what-s-the-difference.html Jumbo Frames "When jumbo frames on a VoIP/UC network are enabled, it can cause the same kind of delay to your network
transmissions." "VoIP uses will always not benefit from jumbo frame, as VoIP like gaming, is latency and time sensitive.
Jumbo Frame for Internet Purpose: You will not see any performance boost as the files that came across the
internet does not support jumbo frame." https://www.ankmax.com/newsinfo/1358641.html#:~:text=VoIP%20uses%20will%20always%20not,does%20not%20... summarize this general best practice guide, you should NOT enable jumbo frame feature as a general
home user."
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