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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

OSI reference model concepts, Comparison of networking appliances, applications, and functions

Topic 4

Cloud concepts and connectivity options, and Common networking ports.

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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The study material to get CompTIA CompTIA Network+ Certification Exam certified should be according to individual's learning style and experience. Real CompTIA N10-009 Exam Questions certification makes you more dedicated and professional as it will provide you complete information required to work within a professional working environment.

CompTIA Network+ Certification Exam Sample Questions (Q281-Q286):

NEW QUESTION # 281
A technician needs to identify a computer on the network that is reportedly downloading unauthorized content. Which of the following should the technician use?

A. Port mirroring
B. Packet capture
C. Performance monitoring
D. Anomaly alerts

Answer: B

Explanation:
Packet Capture: This method captures and inspects network traffic to identify unauthorized downloads or malicious behavior. It provides detailed insight into the data being transmitted, making it the best tool for this scenario.

NEW QUESTION # 282
Which of the following devices can operate in multiple layers of the OSI model?

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

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.
Reference:
CompTIA Network+ study materials on network devices and the OSI model.

NEW QUESTION # 283
A customer calls the help desk to report issues connection to the internet. The customer can reach a local database server. A technician goes to the site and examines the configuration:
Which of the following is causing the user's issue?

A. Unreachable gateway
B. Poor upstream routing
C. Failed root bridge
D. Incorrect DNS

Answer: A

Explanation:
The customer can access local resources (a database server), which means local networking is working.
However, the inability to reach the internet suggests an issue with the default gateway. If the default gateway is unreachable, packets will not be routed outside the local network.
Breakdown of Options:
A: Incorrect DNS - DNS issues would cause problems resolving domain names, but the user should still be able to access external resources via IP addresses.
B: Unreachable gateway - # Correct answer. If the default gateway is incorrect or unreachable, the device cannot route traffic to the internet.
C: Failed root bridge - STP (Spanning Tree Protocol) failures cause switching issues, but the user can still access local devices, meaning STP is not the problem.
D: Poor upstream routing - Would affect the entire network, not just one user.
Reference:
CompTIA Network+ (N10-009) Official Study Guide - Domain 2.3: Explain network routing concepts.

NEW QUESTION # 284
A network engineer is designing a secure communication link between two sites. The entire data stream needs to remain confidential. Which of the following will achieve this goal?

A. IKE
B. GRE
C. AH
D. ESP

Answer: D

Explanation:
Definition of ESP (Encapsulating Security Payload):
ESP is a part of the IPsec protocol suite designed to provide confidentiality, integrity, and authenticity of data by encrypting the payload and optional ESP trailer.
Ensuring Confidentiality:
Encryption: ESP encrypts the payload, ensuring that the data remains confidential during transmission. Only authorized parties with the correct decryption keys can access the data.
Modes of Operation: ESP can operate in transport mode (encrypts only the payload) or tunnel mode (encrypts the entire IP packet), both providing strong encryption to secure data between sites.

NEW QUESTION # 285
A network administrator wants to configure a backup route in case the primary route fails. A dynamic routing protocol is not installed on the router. Which of the following routing features should the administrator choose to accomplish this task?

A. Link state flooding
B. Hop count
C. Neighbor adjacency
D. Administrative distance

Answer: D

Explanation:
Introduction to Administrative Distance
Administrative distance (AD) is a value used by routers to rank routes from different routing protocols. AD represents the trustworthiness of the source of the route. Lower AD values are more preferred. If a router has multiple routes to a destination from different sources, it will choose the route with the lowest AD.
Static Routes and Backup Routes
When a dynamic routing protocol is not used, static routes can be employed. Static routes are manually configured routes. To ensure a backup route, multiple static routes to the same destination can be configured with different AD values.
Configuring Static Routes with Administrative Distance
The primary route is configured with a lower AD value, making it the preferred route. The backup route is configured with a higher AD value. In the event of the primary route failure, the router will then use the backup route.
Example Configuration:
plaintext
Copy code
ip route 192.168.1.0 255.255.255.0 10.0.0.1 1
ip route 192.168.1.0 255.255.255.0 10.0.0.2 10
In the above example, 192.168.1.0/24 is the destination network.
10.0.0.1 is the next-hop IP address for the primary route with an AD of 1.
10.0.0.2 is the next-hop IP address for the backup route with an AD of 10.
Verification:
After configuration, use the show ip route command to verify that the primary route is in use and the backup route is listed as a candidate for use if the primary route fails.
Reference:
CompTIA Network+ guide explains the concept of administrative distance and its use in static routing configuration (see page Ref 9†Basic Configuration Commands).

NEW QUESTION # 286
......

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