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CompTIA N10-009 Exam Syllabus Topics:

Topic	Details
Topic 1	Networking Concepts: For network administrators and IT support professionals, this domain covers
Topic 2	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 3	Selection and configuration of wireless devices.
Topic 4	Network Security: This section of the exam for cybersecurity specialists and network security administrators covers the importance of basic network security concepts, Various types of attacks and their impact on the network, application of network security features, defense techniques, and solutions.\| Network Troubleshooting: For help desk technicians and network support specialists, this section covers troubleshooting methodology, troubleshooting common cabling and physical interface issues, troubleshooting common issues with network services, and use of appropriate tools or protocols to solve networking issues.
Topic 5	Network Implementation: For network technicians and junior network engineers, this section covers Characteristics of routing technologies, Configuration of switching technologies and features, and

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CompTIA Network+ Certification Exam Sample Questions (Q64-Q69):

NEW QUESTION # 64
After changes were made to a firewall, users are no longer able to access a web server. A network administrator wants to ensure that ports 80 and 443 on the web server are still accessible from the user IP space.
Which of the following commands is best suited to perfom this testing?

A. Dig
B. nmap
C. Ifconfig
D. Ping

Answer: B

NEW QUESTION # 65
A network administrator performed upgrades on a server and installed a new NIC to improve performance.
Following the upgrades, usera are unable to reach the server. Which of the following is the most likely reason.

A. The PoE power budget was exceeded.
B. An incorrect cable type was installed.
C. A port security violation occured.
D. TX/RX was transposed.

Answer: B

Explanation:
When a network administrator installs a new Network Interface Card (NIC) and users are unable to reach the server, one of the common issues is the use of an incorrect cable type. Network cables must match the specifications required by the NIC and the network infrastructure (e.g., Cat5e, Cat6 for Ethernet).
* NIC Compatibility: The new NIC might require a specific type of cable to function properly. Using a cable not rated for the NIC's required speeds or capabilities can result in connectivity issues.
* Cable Standards: Different NICs and network devices might need different cabling standards (straight-through vs. crossover cables, or specific fiber optic types).
* Connection Types: Ensuring that the cable connectors are appropriate for the NIC ports (e.g., RJ45 for Ethernet, LC connectors for fiber optics).
Network References:
* CompTIA Network+ N10-007 Official Certification Guide: Discusses network cabling standards and NIC specifications.
* Cisco Networking Academy: Provides insights into cabling and NIC configurations for optimal network performance.
* Network+ Certification All-in-One Exam Guide: Offers comprehensive details on troubleshooting network connectivity issues, including cabling problems.

NEW QUESTION # 66
Which of the following is a characteristic of the application layer?

A. It encrypts data in transit.
B. It performs address translation.
C. It relies upon other layers for packet delivery.
OB. It checks independently for packet loss.

Answer: C

Explanation:
Introduction to OSI Model:
The OSI model is a conceptual framework used to understand network interactions in seven layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application.
Application Layer:
The application layer (Layer 7) is the topmost layer in the OSI model. It provides network services directly to end-user applications. This layer facilitates communication between software applications and lower layers of the network protocol stack.
Reliance on Other Layers:
The application layer relies on the transport layer (Layer 4) for data transfer across the network. The transport layer ensures reliable data delivery through protocols like TCP and UDP.
The network layer (Layer 3) is responsible for routing packets to their destination.
The data link layer (Layer 2) handles node-to-node data transfer and error detection.
The physical layer (Layer 1) deals with the physical connection between devices.
Explanation of the Options:
A . It relies upon other layers for packet delivery: This is correct. The application layer depends on the lower layers (transport, network, data link, and physical) for the actual delivery of data packets.
B . It checks independently for packet loss: This is incorrect. Packet loss detection is typically handled by the transport layer (e.g., TCP).
C . It encrypts data in transit: This is incorrect. Encryption is typically handled by the presentation layer or at the transport layer (e.g., TLS/SSL).
D . It performs address translation: This is incorrect. Address translation is performed by the network layer (e.g., NAT).
Conclusion:
The application layer's primary role is to interface with the end-user applications and ensure that data is correctly presented to the user. It relies on the underlying layers to manage the actual data transport and delivery processes.
Reference:
CompTIA Network+ guide covering the OSI model and the specific roles and functions of each layer (see page Ref 10fHow to Use Cisco Packet Tracer).

NEW QUESTION # 67
Which of the following devices can operate in multiple layers of the OSI model?

A. Transceiver
B. Modem
C. Switch
D. Hub

Answer: C

Explanation:
* Understanding Switches:
* Layer 2 (Data Link Layer):Traditional switches operate primarily at Layer 2, where they use MAC addresses to forward frames within a local network.
* Layer 3 (Network Layer):Layer 3 switches, also known as multilayer switches, can perform
* routing functions using IP addresses to forward packets between different networks.
* Capabilities of Multilayer Switches:
* VLANs and Inter-VLAN Routing:Multilayer switches can handle VLAN (Virtual Local Area Network) configurations and perform inter-VLAN routing, enabling communication between different VLANs.
* Routing Protocols:They can run routing protocols like OSPF (Open Shortest Path First) and EIGRP (Enhanced Interior Gateway Routing Protocol) to manage traffic between networks.
* Comparison with Other Devices:
* Hub:Operates only at Layer 1 (Physical Layer) and simply repeats incoming signals to all ports.
* Transceiver:Also operates at Layer 1, converting electrical signals to optical signals and vice versa.
* Modem:Primarily operates at Layer 1 and Layer 2, modulating and demodulating signals for transmission over different types of media.
* Practical Application:
* Multilayer switches are commonly used in enterprise networks to optimize performance and manage complex routing and switching requirements within a single device.
References:
* CompTIA Network+ study materials on network devices and the OSI model.

NEW QUESTION # 68
Which of the following most likely determines the size of a rack for installation? (Select two).

A. Hard drive size
B. Server height
C. Switch depth
D. Cooling fan speed
E. KVM size
F. Outlet amperage

Answer: C

Explanation:
* Understanding Rack Size Determination:
* The size of a rack for installation is determined by the dimensions of the equipment to be housed in it, primarily focusing on the depth and height of the devices.
* Switch Depth:
* Depth of Equipment: The depth of network switches and other rack-mounted devices directly influences the depth of the rack. If the equipment is deeper, a deeper rack is required to accommodate it.
* Industry Standards: Most racks come in standard depths, but it is essential to match the depth of the rack to the deepest piece of equipment to ensure proper fit and airflow.
* Server Height:
* Height of Equipment: The height of servers and other devices is measured in rack units (U), where 1U equals 1.75 inches. The total height of all equipment determines the overall height requirement of the rack.
* Rack Units: A rack's height is typically described in terms of the number of rack units it can accommodate, such as 42U, 48U, etc.
* Why Other Options are Less Relevant:
* KVM Size: While important for management, KVM (Keyboard, Video, Mouse) switches do not typically determine rack size.
* Hard Drive Size: Individual hard drives are installed within servers or storage devices, not directly influencing rack dimensions.
* Cooling Fan Speed: Fan speed affects cooling but not the physical size of the rack.
* Outlet Amperage: Power requirements do not determine rack dimensions but rather the electrical infrastructure supporting the rack.

NEW QUESTION # 69
......

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COMPTIA N10-009 DUMPS DISCOUNT - NEW N10-009 EXAM CRAM

CompTIA N10-009 Dumps Discount - New N10-009 Exam Cram