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CompTIA N10-009 Exam Syllabus Topics:

TopicDetails
Topic 1
  • 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 2
  • OSI reference model concepts, Comparison of networking appliances, applications, and functions
Topic 3
  • Cloud concepts and connectivity options, and Common networking ports.
Topic 4
  • Selection and configuration of wireless devices.
Topic 5
  • Networking Concepts: For network administrators and IT support professionals, this domain covers
Topic 6
  • 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 (Q124-Q129):

NEW QUESTION # 124
Which of the following most likely requires the use of subinterfaces?

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 #Ref9 Basic Configuration Commands).


NEW QUESTION # 125
What type of attack occurs when the hosts file is altered to redirect domain queries to malicious IP addresses?

Answer: B

Explanation:
When the hosts file is altered, local name resolution is compromised, and domain queries are redirected to malicious IP addresses. This is a form of DNS spoofing/poisoning, where false mappings trick users into visiting fraudulent websites.
* B. Phishing typically uses emails or messages to trick users, not local file modification.
* C. VLAN hopping is a Layer 2 attack to gain unauthorized network access, unrelated to DNS.
* D. ARP poisoning manipulates ARP tables on a LAN to reroute traffic, not name resolution.
References (CompTIA Network+ N10-009):
* Domain: Network Security - DNS poisoning/spoofing, host file manipulation, endpoint attacks.


NEW QUESTION # 126
A network technician is troubleshooting a faulty NIC and tests the theory. Which of the following should the technician do next?

Answer: C

Explanation:
Once the theory has been tested and confirmed, the next step is to implement the solution based on the CompTIA troubleshooting model.


NEW QUESTION # 127
Which of the following allows a user to connect to an isolated device on a stand-alone network?

Answer: C

Explanation:
A jump box is a hardened system that provides secure access to isolated or sensitive devices on a separate network.
Breakdown of Options:
A . Jump box - ✅ Correct answer. Acts as a middle point for secure remote access.
B . API gateway - Used for managing API calls, not remote access to isolated devices.
C . Secure Shell (SSH) - Requires direct connectivity, which may not be available for an isolated device.
D . Clientless VPN - Allows web-based VPN access, but does not guarantee access to isolated devices.
Reference:
CompTIA Network+ (N10-009) Official Study Guide - Domain 3.4: Implement secure remote access methods.


NEW QUESTION # 128
A customer needs six usable IP addresses. Which of the following best meets this requirement?

Answer: D

Explanation:
Reference: CompTIA Network+ Certification Exam Objectives - IP Addressing section.


NEW QUESTION # 129
......

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