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CompTIA N10-009 Exam Syllabus Topics:

TopicDetails
Topic 1
  • OSI reference model concepts, Comparison of networking appliances, applications, and functions
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
  • 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 4
  • Selection and configuration of wireless devices.
Topic 5
  • Cloud concepts and connectivity options, and Common networking ports.
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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N10-009 Exam Score, Exam N10-009 Quiz

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CompTIA Network+ Certification Exam Sample Questions (Q209-Q214):

NEW QUESTION # 209
Company C is acquiring Company A and Company B. Company C needs to merge all three networks into one Class B network. Additionally, the network capacity of each company needs to grow by 20%. Company C also requires segmentation of Company A and Company B to account for unknown security vulnerabilities within each.
Instructions:
Select the correct subnet range to meet Company C ' s requirements.

Answer:

Explanation:

Explanation:
A = 192.168.10.0/26
B = 192.168.1.0/23
C = 10.0.0.1/18
Using the choices shown in the screenshot, the best-fit subnet selections are based on host growth requirements first, then segmentation .
For Company A , the current device count is 32 . With 20% growth , that becomes about 39 devices . A /27 only supports 30 usable hosts , so it is too small. A /26 supports 62 usable hosts , so 192.168.10.0/26 is the correct choice.
For Company B , the current device count is 100 . With 20% growth , that becomes 120 devices . The smallest correct subnet would normally be a /25 with 126 usable hosts , but that option is not shown. From the available choices, 192.168.1.0/23 is the smallest subnet that still supports more than 120 hosts, so that is the best answer.
For Company C , the current device count is 10,000 . With 20% growth , it needs space for 12,000 hosts . A
/18 provides 16,382 usable hosts , while a /19 is not available and a /21 or /22 would be far too small.
Therefore, 10.0.0.1/18 is the correct selection.
One important note: the dropdown choices shown do not actually let all three companies be placed into a single true Class B network block. So these answers are the best valid selections from the provided options .


NEW QUESTION # 210
Which of the following ICMP responses does a router send to inform a host of a better routing gateway?

Answer: B

Explanation:
An ICMP Redirect message is sent by a router to tell a host there is a better next-hop gateway for a destination, prompting the host to update its routing decision for that traffic.


NEW QUESTION # 211
A network administrator needs to change where the outside DNS records are hosted. Which of the following records should the administrator change the registrar to accomplish this task?

Answer: C

Explanation:
To change where the outside DNS records are hosted, the network administrator needs to update the NS (Name Server) records at the domain registrar. NS records specify the authoritative name servers for a domain, directing where DNS queries should be sent.
* NS (Name Server) Records: These records indicate the servers that are authoritative for a domain.
Changing the NS records at the registrar points DNS resolution to the new hosting provider.
* SOA (Start of Authority): Contains administrative information about the domain, including the primary name server.
* PTR (Pointer) Records: Used for reverse DNS lookups, mapping IP addresses to domain names.
* CNAME (Canonical Name) Records: Used to alias one domain name to another, not relevant for changing DNS hosting.
Network References:
* CompTIA Network+ N10-007 Official Certification Guide: Discusses DNS records, their purposes, and how to manage them.
* Cisco Networking Academy: Provides training on DNS management and the role of different DNS record types.
* Network+ Certification All-in-One Exam Guide: Explains DNS records and their configuration for domain management.


NEW QUESTION # 212
While troubleshooting connectivity issues, a junior network administrator is given explicit instructions to test the host's TCP/IP stack first. Which of the following commands should the network administrator run?

Answer: D

Explanation:
The loopback address 127.0.0.1 is used to test the TCP/IP stack of the local machine. Pinging this address confirms whether the local system's networking stack is functioning correctly.


NEW QUESTION # 213
A customer needs to distribute Ethernet to multiple computers in an office. The customer would like to use non-proprietary standards. Which of the following blocks does the technician need to install?

Answer: D

Explanation:
For distributing Ethernet to multiple computers in an office using non-proprietary standards, the technician would typically use a block that adheres to industry-standard termination methods. The
110 block is a type of punch-down block commonly used for terminating and connecting twisted- pair cables, including those used for Ethernet.


NEW QUESTION # 214
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