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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 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 3	Networking Concepts: For network administrators and IT support professionals, this domain covers
Topic 4	OSI reference model concepts, Comparison of networking appliances, applications, and functions
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
Topic 6	Cloud concepts and connectivity options, and Common networking ports.

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CompTIA Network+ Certification Exam Sample Questions (Q190-Q195):

NEW QUESTION # 190
An organization requires the ability to send encrypted email messages to a partner from an email server that is hosted on premises. The organization prefers to use the standard default ports when creating firewall rules. Which of the following ports should be open to satisfy the requirements?

A. 0
B. 1
C. 2
D. 3

Answer: C

Explanation:
Port 587 is the standard default port for sending email (SMTP) with TLS encryption, which is used to secure email transmissions between mail servers or between clients and mail servers. Allowing traffic over port 587 enables secure email sending while maintaining standard protocol usage.

NEW QUESTION # 191
Which of the following attacks would most likely cause duplicate IP addresses in a network?

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

Answer: A

Explanation:
* Definition of a Rogue DHCP Server:
* A rogue DHCP server is an unauthorized DHCP server on a network, which can assign IP addresses to devices without proper control, leading to IP address conflicts.
* Impact of a Rogue DHCP Server:
* IP Address Conflicts:Multiple devices may receive the same IP address from different DHCP servers, causing network connectivity issues.
* Network Disruption:Devices may be assigned incorrect network configuration settings, disrupting network services and connectivity.
* Comparison with Other Attacks:
* DNS poisoning:Alters DNS records to redirect traffic to malicious sites, but does not cause IP address conflicts.
* Social engineering:Involves manipulating individuals to gain unauthorized access or information, not directly related to IP address conflicts.
* Denial-of-service (DoS):Floods a network or service with excessive traffic to disrupt operations, but does not cause duplicate IP addresses.
* Prevention and Detection:
* Implement network access control measures to prevent unauthorized devices from acting as DHCP servers.
* Use DHCP snooping on switches to allow DHCP responses only from authorized DHCP servers.
References:
* CompTIA Network+ study materials on network security threats and mitigation techniques.

NEW QUESTION # 192
Adata center interconnectusing aVXLANwas recently implemented. A network engineer observesslow performance and fragmentationon the interconnect. Which of the following technologies willresolve the issue?

A. Jumbo frames
B. Spanning tree
C. 802.1Q tagging
D. Link aggregation

Answer: A

Explanation:
Comprehensive and Detailed Explanation:
VXLAN (Virtual Extensible LAN)encapsulates Ethernet frames inside UDP packets, increasing packet size. This can lead tofragmentation and performance degradationunlessJumbo Framesare enabled.
Breakdown of Options:
* A. 802.1Q tagging- VLAN tagging enables segmentation but doesnot address fragmentation issues.
* B. Spanning tree- STP prevents loops but doesnot improve performancefor VXLAN traffic.
* C. Link aggregation- LACP combines links forhigher bandwidthbut doesnot prevent fragmentation
.
* D. Jumbo frames-Correct answer.EnablingJumbo Framesallows larger packet sizes,reducing fragmentationandimproving VXLAN performance.

NEW QUESTION # 193
A network engineer is now in charge of all SNMP management in the organization. The engineer must use a SNMP version that does not utilize plaintext dat a. Which of the following is the minimum version of SNMP that supports this requirement?

A. v2u
B. v3
C. v2c
D. v1

Answer: B

Explanation:
SNMPv3 is the version of the Simple Network Management Protocol that introduces security enhancements, including message integrity, authentication, and encryption. Unlike previous versions (v1 and v2c), SNMPv3 supports encrypted communication, ensuring that data is not transmitted in plaintext. This provides confidentiality and protects against eavesdropping and unauthorized access.
Reference: CompTIA Network+ study materials.

NEW QUESTION # 194
SIMULATION
You have been tasked with implementing an ACL on the router that will:
1. Permit the most commonly used secure remote access technologies from the management network to all other local network segments
2. Ensure the user subnet cannot use the most commonly used remote access technologies in the Linux and Windows Server segments.
3. Prohibit any traffic that has not been specifically allowed.
INSTRUCTIONS
Use the drop-downs to complete the ACL
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 the answer and solution below
Explanation:

NEW QUESTION # 195
......

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N10-009 latest dumps

CompTIA N10-009 Exam Syllabus Topics:

New Launch N10-009 PDF Dumps [2025] - CompTIA N10-009 Exam Question

CompTIA Network+ Certification Exam Sample Questions (Q190-Q195):

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