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New N10-009 Test Sims, New N10-009 Exam Questions

We can say that the CompTIA N10-009 exam practice questions are real, valid, and updated CompTIA Network+ Certification Exam (N10-009) exam questions that will provide you with everything that you need to learn to prepare and pass the N10-009 exam. The CompTIA N10-009 Exam Questions will not only assist you in CompTIA Network+ Certification Exam (N10-009) exam preparation but also give you sight knowledge about the CompTIA Network+ Certification Exam (N10-009) exam topics that will help you in your professional career.

CompTIA N10-009 Exam Syllabus Topics:

Topic
Details

Topic 1

Network Implementation: For network technicians and junior network engineers, this section covers Characteristics of routing technologies, Configuration of switching technologies and features, and

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

Selection and configuration of wireless devices.

Topic 5

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

Topic 6

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.

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CompTIA Network+ Certification Exam Sample Questions (Q192-Q197):

NEW QUESTION # 192
Which of the following steps of the troubleshooting methodology would most likely include checking through each level of the OSI model after the problem has been identified?

A. Create a plan of action.
B. Verify functionality.
C. Establish a theory.
D. Implement the solution.

Answer: B

Explanation:
Introduction to Troubleshooting Methodology:
Network troubleshooting involves a systematic approach to identifying and resolving network issues. The CompTIA Network+ certification emphasizes a structured troubleshooting methodology.
Troubleshooting Steps:
Identify the problem: Gather information, identify symptoms, and question users.
Establish a theory of probable cause: Consider possible reasons for the issue.
Test the theory to determine cause: Validate the theory with tests.
Establish a plan of action to resolve the problem and implement the solution: Create and execute a resolution plan.
Verify functionality and implement preventive measures: Ensure the solution works and prevent recurrence.
Verifying Functionality:
After implementing a solution, verifying functionality ensures that the problem is fully resolved. This involves testing the network to confirm that it operates correctly.
Checking through each level of the OSI model helps to ensure that all potential issues at different layers (physical, data link, network, transport, session, presentation, and application) are addressed.
Explanation of the Options:
A . Establish a theory: This step involves hypothesizing possible causes, not verifying functionality.
B . Implement the solution: This step involves executing the resolution plan.
C . Create a plan of action: This step involves planning the resolution, not verification.
D . Verify functionality: This step involves comprehensive checks, including OSI model layers, to ensure the issue is fully resolved.
Conclusion:
Verifying functionality is a critical step in the troubleshooting process, ensuring that the network operates correctly after a solution is implemented. It involves thorough testing across all OSI model layers.
Reference:
CompTIA Network+ guide explaining the troubleshooting methodology and the importance of verifying functionality (see page Ref 9fBasic Configuration Commands).

NEW QUESTION # 193
A network administrator needs to divide 192.168.1.0/24 into two equal halves. Which of the following subnet masks should the administrator use?

A. 255.255.254.0
B. 255.255.255.128
C. 255.255.0.0
D. 255.255.255.0

Answer: B

Explanation:
* Understanding Subnetting:
* Original Network:192.168.1.0/24 has a subnet mask of 255.255.255.0, which allows for 256 IP addresses (including network and broadcast addresses).
* Objective:Divide this network into two equal subnets.
* Calculating Subnet Mask:
* New Subnet Mask:To divide 192.168.1.0/24 into two equal halves, we need to borrow one bit from the host portion of the address, changing the subnet mask to 255.255.255.128 (/25).
* Subnet Breakdown:
* First Subnet: 192.168.1.0/25 (192.168.1.0 - 192.168.1.127)
* Second Subnet: 192.168.1.128/25 (192.168.1.128 - 192.168.1.255)
* Verification:
* Each subnet now has 128 IP addresses (126 usable IP addresses, excluding the network and broadcast addresses).
* Comparison with Other Options:
* 255.255.0.0 (/16):Provides a much larger network, not dividing the original /24 network.
* 255.255.254.0 (/23):Also creates a larger subnet, encompassing more than the original /24 network.
* 255.255.255.0 (/24):Maintains the original subnet size, not dividing it.
References:
* CompTIA Network+ study materials on subnetting and IP addressing.

NEW QUESTION # 194
Which of the following are the best device-hardening techniques for network security? (Select two).

A. Enabling logical security such as SSO
B. Performing regular scanning of unauthorized devices
C. Disabling unused ports
D. Monitoring system logs for irregularities
E. Changing default passwords
F. Ensuring least privilege concepts are in place

Answer: C,E

Explanation:
Disabling unused ports prevents unauthorized access and reduces the attack surface by ensuring that no inactive or unmonitored entry points are available for exploitation. Changing default passwords is critical for security because default credentials are widely known and can easily be exploited by attackers. These techniques are fundamental steps in hardening devices against unauthorized access and ensuring network security. References: CompTIA Network+ Exam Objectives and official study guides.

NEW QUESTION # 195
Which of the following is used to estimate the average life span of a device?

A. MTBF
B. MTTR
C. RTO
D. RPO

Answer: A

Explanation:
* Understanding MTBF:
* Mean Time Between Failures (MTBF): A reliability metric that estimates the average time between successive failures of a device or system.
* Calculation and Importance:
* Calculation: MTBF is calculated as the total operational time divided by the number of failures during that period.
* Usage: Used by manufacturers and engineers to predict the lifespan and reliability of a device, helping in maintenance planning and lifecycle management.
* Comparison with Other Metrics:
* RTO (Recovery Time Objective): The maximum acceptable time to restore a system after a failure.
* RPO (Recovery Point Objective): The maximum acceptable amount of data loss measured in time.
* MTTR (Mean Time to Repair): The average time required to repair a device or system and return it to operational status.
* Application:
* MTBF is crucial for planning maintenance schedules, spare parts inventory, and improving the overall reliability of systems.

NEW QUESTION # 196
A client wants to increase overall security after a recent breach. Which of the following would be best to implement? (Select two.)

A. Central policy management
B. Least privilege network access
C. Dynamic inventeries
D. Configuration drift prevention
E. Subnet range limits
F. Zero-touch provisioning

Answer: A,B

Explanation:
To increase overall security after a recent breach, implementing least privilege network access and central policy management are effective strategies.
Least Privilege Network Access: This principle ensures that users and devices are granted only the access necessary to perform their functions, minimizing the potential for unauthorized access or breaches. By limiting permissions, the risk of an attacker gaining access to critical parts of the network is reduced.
Central Policy Management: Centralized management of security policies allows for consistent and streamlined implementation of security measures across the entire network. This helps in quickly responding to security incidents, ensuring compliance with security protocols, and reducing the chances of misconfigurations.

NEW QUESTION # 197
......

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Ken Bell Ken Bell

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