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Pass Guaranteed 2025 CompTIA Valid N10-009 Exam Questions Vce

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CompTIA N10-009 Exam Syllabus Topics:

Topic
Details

Topic 1

• Network Operations: For IT operations staff and network operations center (NOC) technicians, this part of the exam covers the purpose of organizational processes and procedures and use of network monitoring technologies.

Topic 2

• Network Implementation: For network technicians and junior network engineers, this section covers Characteristics of routing technologies, Configuration of switching technologies and features, and

Topic 3

• Networking Concepts: For network administrators and IT support professionals, this domain covers

Topic 4

• Cloud concepts and connectivity options, and Common networking ports.

 

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CompTIA Network+ Certification Exam Sample Questions (Q116-Q121):

NEW QUESTION # 116
Which of the following network cables involves bounding light off of protective cladding?

• A. Coaxial
• B. Single-mode
• C. Multimode
• D. Twinaxial

Answer: C

Explanation:
Multimode fiber optic cables involve the transmission of light signals that bounce off the core's cladding as they travel down the fiber. This characteristic differentiates it from single-mode fiber, where the light travels directly down the fiber without reflecting off the cladding.
Here are some detailed points about multimode fiber cables:
* Construction: Multimode fibers have a larger core diameter, typically 50 or 62.5 microns, compared to single-mode fibers, which have a core diameter of about 9 microns.
* Light Propagation: The larger core of multimode fiber allows multiple light modes to propagate. These modes travel at different angles, leading to reflections off the core-cladding boundary.
* Distance and Bandwidth: Due to modal dispersion, where different light modes arrive at the receiver at
* different times, multimode fibers are suited for shorter distance applications compared to single-mode fibers. Typical distances are up to 550 meters for 10 Gbps Ethernet using OM4 multimode fiber.
* Applications: Multimode fibers are commonly used in LANs (Local Area Networks), data centers, and for shorter distance data transmission due to their cost-effectiveness and ease of installation.
Network References:
* CompTIA Network+ N10-007 Official Certification Guide, which covers fiber optic technologies, including the differences between multimode and single-mode fibers.
* Cisco Networking Academy: Provides training materials and reference guides on the properties of different fiber optic cables.
* Fiber Optic Association (FOA): A professional society dedicated to fiber optics, offering extensive information and certification on fiber optic technologies.
Multimode fibers are specifically designed for short-range communication with higher data rates and are typically used in environments like data centers, where high bandwidth over shorter distances is crucial. The reflections off the cladding, inherent to multimode fiber, facilitate this high-capacity communication.

 

NEW QUESTION # 117
Which of the following most likely requires the use of subinterfaces?

• A. A switch using Spanning Tree Protocol
• B. A router with only one available LAN port
• C. A firewall performing deep packet inspection
• D. A hub utilizing jumbo frames

Answer: B

Explanation:
* Introduction to Subinterfaces:
* Subinterfaces are logical interfaces created on a single physical interface. They are used to enable a router to support multiple networks on a single physical interface.
* Use Case for Subinterfaces:
* Subinterfaces are commonly used in scenarios where VLANs are implemented. A router with a single physical LAN port can be configured with multiple subinterfaces, each associated with a different VLAN.
* This setup allows the router to route traffic between different VLANs.
* Example Configuration:
* Consider a router with a single physical interface GigabitEthernet0/0 and two VLANs, 10 and 20.
interface GigabitEthernet0/0.10
encapsulation dot1Q 10
ip address 192.168.10.1 255.255.255.0
!
interface GigabitEthernet0/0.20
encapsulation dot1Q 20
ip address 192.168.20.1 255.255.255.0
* The encapsulation dot1Q command specifies the VLAN ID.
* Explanation of the Options:
* A. A router with only one available LAN port: This is correct. Subinterfaces allow a single physical interface to manage multiple networks, making it essential for routers with limited physical interfaces.
* B. A firewall performing deep packet inspection: Firewalls can use subinterfaces, but it is not a requirement for deep packet inspection.
* C. A hub utilizing jumbo frames: Hubs do not use subinterfaces as they operate at Layer 1 and do not manage IP addressing.
* D. A switch using Spanning Tree Protocol: STP is a protocol for preventing loops in a network and does not require subinterfaces.
* Conclusion:
* Subinterfaces provide a practical solution for routing between multiple VLANs on a router with limited physical interfaces. They allow network administrators to optimize the use of available hardware resources efficiently.
References:
* CompTIA Network+ guide detailing VLAN configurations and the use of subinterfaces (see page Ref
9fBasic Configuration Commands).

 

NEW QUESTION # 118
SIMULATION
You have been tasked with setting up a wireless network in an office. The network will consist of 3 Access Points and a single switch. The network must meet the following parameters:
The SSIDs need to be configured as CorpNet with a key of S3cr3t!
The wireless signals should not interfere with each other
The subnet the Access Points and switch are on should only support 30 devices maximum The Access Points should be configured to only support TKIP clients at a maximum speed INSTRUCTONS Click on the wireless devices and review their information and adjust the settings of the access points to meet the given requirements.
If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.

Answer:

Explanation:
See explanation below
Explanation:
On the first exhibit, the layout should be as follows

Exhibit 2 as follows
Access Point Name AP2

Exhibit 3 as follows
Access Point Name AP3

 

NEW QUESTION # 119
Which of the following attacks would most likely cause duplicate IP addresses in a network?

• A. DNS poisoning
• B. Social engineering
• C. Denial-of-service
• D. Rogue DHCP server

Answer: D

Explanation:

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