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| Certification Vendor: | CompTIA |
|---|---|
| Exam Name: | CompTIA Network+ Certification Exam |
| Exam Number: | N10-009 |
| Real Exam Qty: | Maximum 90 |
| Related Certifications: | CompTIA Network+ |
| Exam Format: | Multiple-choice, Performance-based |
| Exam Duration: | 90 minutes |
| Certificate Validity Period: | 3 years |
| Available Languages: | Spanish, Japanese, Portuguese, German, English |
| Passing Score: | 720 (on a scale of 100-900) |
| Exam Price: | $369 USD |
| Sample Questions: | CompTIA N10-009 Sample Questions |
| Exam Way: | Online or in-person testing at Pearson VUE test centers. |
| Pre Condition: | CompTIA recommends A+ certification and 9-12 months of networking experience. |
| Official Syllabus URL: | https://www.comptia.org/en/certifications/network/ |
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NEW QUESTION # 257
A user is unable to navigate to a website because the provided URL is not resolving to the correct IP address.
Other users are able to navigate to the intended website without issue. Which of the following is most likely causing this issue?
Answer: C
Explanation:
Role of the Hosts File:
The hosts file is a local file on a computer that maps hostnames to IP addresses. It can be used to override DNS resolution by providing a static mapping of a hostname to an IP address.
Common Issues with the Hosts File:
If an incorrect IP address is mapped to a hostname in the hosts file, it can cause the computer to resolve the hostname to the wrong IP address. This can lead to navigation issues for specific websites while other users, relying on DNS, do not face the same problem.
Why Other Options are Less Likely:
Self-signed certificate: Relates to SSL/TLS and would cause a security warning, not a navigation failure.
Nameserver record: Affects all users, not just one.
IP helper: Used to forward DHCP requests and is unrelated to DNS resolution issues.
Troubleshooting Steps:
Check the hosts file on the affected user's computer (C:\Windows\System32\drivers\etc\hosts on Windows or
/etc/hosts on Unix/Linux).
Look for entries that map the problematic hostname to an incorrect IP address and correct or remove them.
References:
CompTIA Network+ study materials and system administration documentation.
NEW QUESTION # 258
A network engineer configures an application server so that it automatically adjusts resource allocation as demand changes. This server will host a new application and demand is not predictable. Which of the following concepts does this scenario demonstrate?
Answer: D
Explanation:
Elasticity is the ability of a system (often in cloud environments) to automatically scale resources up or down in real time based on demand.
A). Scalability means the ability to grow over time but not necessarily dynamically.
B). SaaS is a service model, not a resource-allocation concept.
C). Hybrid cloud is a deployment model, not a performance behavior.
References (CompTIA Network+ N10-009):
Domain: Networking Concepts - Cloud computing, elasticity vs. scalability.
NEW QUESTION # 259
What is the first step in troubleshooting a network issue?
Answer: A
Explanation:
The first step of troubleshooting is always to identify the problem, which includes verifying the symptoms (incorrect time), asking the user clarifying questions, and checking system logs. Only after confirming the problem can the administrator proceed to form a theory and plan.
* A. Plan of action is later.
* B. Implement solution comes after testing a theory.
* D. Test the theory requires a defined problem first.
References (CompTIA Network+ N10-009):
* Domain: Network Troubleshooting - Troubleshooting methodology (Identify # Theory # Test # Plan # Implement # Verify # Document).
NEW QUESTION # 260
A network administrator has been taskedwith configuring a network for a newcorporate office. The office consists of twobuildings, separated by 50 feet with nophysical connectivity. The configuration mustmeet the following requirements:
. Devices in both buildings should be
able to access the Internet.
. Security insists that all Internet traffic
be inspected before entering the
network.
. Desktops should not see traffic
destined for other devices.
INSTRUCTIONS
Select the appropriate network device foreach location. If applicable, click on themagnifying glass next to any device whichmay require configuration updates and makeany necessary changes.
Not all devices will be used, but all locationsshould be filled.
If at any time you would like to bring backthe initial state of the simulation, please click the Reset All button.
Answer:
Explanation:
See the step by step complete solution below.
Explanation:
* Devices in both buildings should be able to access the Internet.
* Security insists that all Internet traffic be inspected before entering the network.
* Desktops should not see traffic destined for other devices.
Here is the corrected layout with explanation:
* Building A:
* Switch: Correctly placed to connect all desktops.
* Firewall: Correctly placed to inspect all incoming and outgoing traffic.
* Building B:
* Switch: Not needed. Instead, place aWireless Access Point (WAP)to provide wireless connectivity for laptops and mobile devices.
* Between Buildings:
* Wireless Range Extender: Correctly placed to provide connectivity between the buildings wirelessly.
* Connection to the Internet:
* Router: Correctly placed to connect to the Internet and route traffic between the buildings and the Internet.
* Firewall: The firewall should be placed between the router and the internal network to inspect all traffic before it enters the network.
* Top-left (Building A): Switch
* Bottom-left (Building A): Firewall (inspect traffic before it enters the network)
* Top-middle (Internet connection): Router
* Bottom-middle (between buildings): Wireless Range Extender
* Top-right (Building B): Wireless Access Point (WAP)
Corrected Setup:In this corrected setup, the WAP in Building B will connect wirelessly to the Wireless Range Extender, which is connected to the Router. The Router is connected to the Firewall to ensure all traffic is inspected before it enters the network.
* SSID: CORP
* Security Settings: WPA2 or WPA2 - Enterprise
* Key or Passphrase: [Enter a strong passphrase]
* Mode: [Set based on your network plan]
* Channel: [Set based on your network plan]
* Speed: Auto
* Duplex: Auto
Configuration for Wireless Range Extender:With these settings, both buildings will have secure access to the Internet, and all traffic will be inspected by the firewall before entering the network. Desktops and other devices will not see traffic intended for others, maintaining the required security and privacy.
Uploaded image
To configure the wireless range extender for security, follow these steps:
* SSID (Service Set Identifier):
* Ensure the SSID is set to "CORP" as shown in the exhibit.
* Security Settings:
* WPA2orWPA2 - Enterprise: Choose one of these options for stronger security.
WPA2-Enterprise provides more robust security with centralized authentication, which is ideal for a corporate environment.
* Key or Passphrase:
* If you selectWPA2, enter a strong passphrase in the "Key or Passphrase" field.
* If you selectWPA2 - Enterprise, you will need to configure additional settings for authentication servers, such as RADIUS, which is not shown in the exhibit.
* Wireless Mode and Channel:
* Set the appropriate mode and channel based on your network design and the environment to avoid interference. These settings are not specified in the exhibit, so set them according to your network plan.
* Wired Speed and Duplex:
* Set the speed to "Auto" unless you have specific requirements for 100 or 1000 Mbps.
* Set the duplex to "Auto" unless you need to specify half or full duplex based on your network equipment.
* Save Configuration:
* After making the necessary changes, click the "Save" button to apply the settings.
Here is how the configuration should look after adjustments:
* SSID: CORP
* Security Settings: WPA2 or WPA2 - Enterprise
* Key or Passphrase: [Enter a strong passphrase]
* Mode: [Set based on your network plan]
* Channel: [Set based on your network plan]
* Speed: Auto
* Duplex: Auto
Once these settings are configured, your wireless range extender will provide secure connectivity for devices in both buildings.
Firewall setting toto ensure complete compliance with the requirements and best security practices, consider the following adjustments and additions:
* DNS Rule: This rule allows DNS traffic from the internal network to any destination, which is fine.
* HTTPS Outbound: This rule allows HTTPS traffic from the internal network (assuming
192.169.0.1/24 is a typo and should be 192.168.0.1/24) to any destination, which is also good for secure
* web browsing.
* Management: This rule allows SSH access to the firewall for management purposes, which is necessary for administrative tasks.
* HTTPS Inbound: This rule denies inbound HTTPS traffic to the internal network, which is good unless you have a web server that needs to be accessible from the internet.
* HTTP Inbound: This rule denies inbound HTTP traffic to the internal network, which is correct for security purposes.
* Permit General Outbound Traffic: Allow general outbound traffic for web access, email, etc.
* Block All Other Traffic: Ensure that all other traffic is blocked to prevent unauthorized access.
* Correct the Network Typo:
* Ensure that the subnet192.169.0.1/24is corrected to192.168.0.1/24.
* Permit General Outbound Traffic:
* Rule Name: General Outbound
* Source:192.168.0.1/24
* Destination:ANY
* Service:ANY
* Action:PERMIT
* Deny All Other Traffic:
* Rule Name: Block All
* Source:ANY
* Destination:ANY
* Service:ANY
* Action:DENY
Suggested Additional Settings:Firewall Configuration Adjustments:Here is how your updated firewall settings should look:
Rule Name
Source
Destination
Service
Action
DNS Rule
192.168.0.1/24
ANY
DNS
PERMIT
HTTPS Outbound
192.168.0.1/24
ANY
HTTPS
PERMIT
Management
ANY
192.168.0.1/24
SSH
PERMIT
HTTPS Inbound
ANY
192.168.0.1/24
HTTPS
DENY
HTTP Inbound
ANY
192.168.0.1/24
HTTP
DENY
General Outbound
192.168.0.1/24
ANY
ANY
PERMIT
Block All
ANY
ANY
ANY
DENY
These settings ensure that:
* Internal devices can access DNS and HTTPS services externally.
* Management access via SSH is permitted.
* Inbound HTTP and HTTPS traffic is denied unless otherwise specified.
* General outbound traffic is allowed.
* All other traffic is blocked by default, ensuring a secure environment.
Make sure to save the settings after making these adjustments.
NEW QUESTION # 261
A network administrator is responding to a request to configure a new IP phone. Which of the following should the network administrator do to allow data and voice traffic to be properly prioritized?
Answer: D
Explanation:
To ensure voice and data traffic are properly prioritized for an IP phone, the administrator should modify (configure) QoS. In Network+ (N10-009), QoS is the primary mechanism used to prioritize latency-sensitive traffic such as VoIP. By classifying and marking voice frames/packets (often using DSCP/CoS values) and applying priority queuing, the network ensures voice traffic experiences minimal delay and jitter even when links are congested. This is essential for call quality because voice is highly sensitive to variation in delivery time and packet loss.
802.1Q tagging is important for VLAN separation (and many IP phone deployments use a voice VLAN), but VLAN tagging alone does not guarantee prioritization; it separates traffic, while QoS provides preferential treatment. Full duplex can reduce collisions on Ethernet links, but it does not implement traffic prioritization policies. Changing the native VLAN is a trunking/security configuration detail and not the correct action to prioritize voice versus data. In practice, networks often use both a voice VLAN (802.1Q) and QoS, but for the explicit requirement of prioritization, QoS is the correct answer.
NEW QUESTION # 262
......
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