お手軽に合格させる 最新CompTIA N10-009問題集には149問があります
最新のN10-009学習ガイド2024年最新の- 提供するのはテストエンジンとPDF
CompTIA N10-009 認定試験の出題範囲：
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質問 # 20
Which of the following attacks utilizes a network packet that contains multiple network tags?
- A. MAC flooding
- B. ARP poisoning
- C. VLAN hopping
- D. DNS spoofing
正解：C
解説：
VLAN hopping is an attack where an attacker crafts packets with multiple VLAN tags, allowing them to traverse VLAN boundaries improperly. This can result in gaining unauthorized access to network segments that are supposed to be isolated. The other options do not involve the use of multiple network tags. MAC flooding aims to overwhelm a switch's MAC address table, DNS spoofing involves forging DNS responses, and ARP poisoning involves sending fake ARP messages.
Reference:
According to the CompTIA Network+ course materials, VLAN hopping exploits the tagging mechanism in network packets to gain unauthorized access.
質問 # 21
Which of the following can support a jumbo frame?
- A. Access point
- B. Switch
- C. Bridge
- D. Hub
正解：B
解説：
* Definition of Jumbo Frames:
* Jumbo frames are Ethernet frames with more than 1500 bytes of payload, typically up to 9000 bytes. They are used to improve network performance by reducing the overhead caused by smaller frames.
* Why Switches Support Jumbo Frames:
* Switches are network devices designed to manage data packets and can be configured to support jumbo frames. This capability enhances throughput and efficiency, particularly in high-performance networks and data centers.
* Incompatibility of Other Devices:
* Access Point: Primarily handles wireless communications and does not typically support jumbo frames.
* Bridge: Connects different network segments but usually operates at standard Ethernet frame sizes.
* Hub: A simple network device that transmits packets to all ports without distinguishing between devices, incapable of handling jumbo frames.
* Practical Application:
* Enabling jumbo frames on switches helps in environments where large data transfers are common, such as in storage area networks (SANs) or large-scale virtualized environments.
References:
* CompTIA Network+ course materials and networking hardware documentation.
質問 # 22
A technician is troubleshooting a user's laptop that is unable to connect to a corporate server. The technician thinks the issue pertains to routing. Which of the following commands should the technician use to identify the issue?
- A. arp
- B. tracert
- C. dig
- D. tcpdump
正解：B
解説：
Thetracert(Traceroute) command is used to determine the path packets take from the source to the destination.
It helps in identifying routing issues by showing each hop the packets pass through, along with the time taken for each hop. This command can pinpoint where the connection is failing or experiencing delays, making it an essential tool for troubleshooting routing issues.References:CompTIA Network+ study materials and common network troubleshooting commands.
質問 # 23
A technician is troubleshooting a user's laptop that is unable to connect to a corporate server. The technician thinks the issue pertains to routing. Which of the following commands should the technician use to identify the issue?
- A. arp
- B. tracert
- C. dig
- D. tcpdump
正解：B
解説：
The tracert (Traceroute) command is used to determine the path packets take from the source to the destination. It helps in identifying routing issues by showing each hop the packets pass through, along with the time taken for each hop. This command can pinpoint where the connection is failing or experiencing delays, making it an essential tool for troubleshooting routing issues.References: CompTIA Network+ study materials and common network troubleshooting commands.
質問 # 24
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.
正解：
解説：
See the answer and solution below.
Explanation:
質問 # 25
Which of the following is the most closely associated with segmenting compute resources within a single cloud account?
- A. VPC
- B. Hybrid cloud
- C. Network security group
- D. laaS
正解：A
解説：
A Virtual Private Cloud (VPC) is most closely associated with segmenting compute resources within a single cloud account. A VPC allows you to define a virtual network that closely resembles a traditional network, complete with subnets, route tables, and gateways. This segmentation enables the isolation of different parts of a network within a cloud environment, ensuring security and efficient resource management. VPCs are a key component in many cloud infrastructures, providing the flexibility to manage and control network settings and resources.
Reference: CompTIA Network+ Certification Exam Objectives - Cloud Models section.
質問 # 26
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. Establish a theory.
- B. Implement the solution.
- C. Verify functionality.
- D. Create a plan of action.
正解：C
解説：
* 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.
References:
* CompTIA Network+ guide explaining the troubleshooting methodology and the importance of verifying functionality (see page Ref 9†Basic Configuration Commands).
質問 # 27
A network administrator for a small office is adding a passive IDS to its network switch for the purpose of inspecting network traffic. Which of the following should the administrator use?
- A. SNMP trap
- B. Port mirroring
- C. API integration
- D. Syslog collection
正解：B
解説：
Port mirroring, also known as SPAN (Switched Port Analyzer), is used to send a copy of network packets seen on one switch port (or an entire VLAN) to another port where the IDS is connected. This allows the IDS to passively inspect network traffic without interfering with the actual traffic flow. Port mirroring is an essential feature for implementing IDS in a network for traffic analysis and security monitoring.
Reference: CompTIA Network+ study materials.
質問 # 28
Which of the following best explains the role of confidentiality with regard to data at rest?
- A. Data can be accessed after privileged access Is granted.
- B. Data can be accessed by anyone on the administrative network.
- C. Data can be accessed remotely with proper training.
- D. Data can be accessed after verifying the hash.
正解：A
解説：
Confidentiality with Data at Rest: Confidentiality is a core principle of data security, ensuring that data stored (at rest) is only accessible to authorized individuals. This protection is achieved through mechanisms such as encryption, access controls, and permissions.
Privileged Access: The statement "Data can be accessed after privileged access is granted" aligns with the confidentiality principle, as it restricts data access to users who have been granted specific permissions or roles. Only those with the appropriate credentials or permissions can access the data.
Incorrect Options:
A . "Data can be accessed by anyone on the administrative network." This violates the principle of confidentiality by allowing unrestricted access.
B . "Data can be accessed remotely with proper training." This focuses on remote access rather than restricting access based on privileges.
D . "Data can be accessed after verifying the hash." This option relates more to data integrity rather than confidentiality.
質問 # 29
A network technician needs to resolve some issues with a customer's SOHO network. The customer reports that some of the PCs are not connecting to the network, while others appear to be working as intended.
INSTRUCTIONS
Troubleshoot all the network components.
Review the cable test results first, then diagnose by clicking on the appropriate PC, server, and Layer 2 switch.
Identify any components with a problem and recommend a solution to correct each problem.
If at any time you would like to bring back
the initial state of the simulation, please
click the Reset All button.
正解：
解説：
See the answer and solution below:
質問 # 30
SIMULATION
You have been tasked with setting up a wireless network in an office. The network will consist of 3 Access Points and a single switch. The network must meet the following parameters:
The SSIDs need to be configured as CorpNet with a key of S3cr3t!
The wireless signals should not interfere with each other
The subnet the Access Points and switch are on should only support 30 devices maximum The Access Points should be configured to only support TKIP clients at a maximum speed INSTRUCTONS Click on the wireless devices and review their information and adjust the settings of the access points to meet the given requirements.
If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.
正解：
解説：
See explanation below.
Explanation:
On the first exhibit, the layout should be as follows
Exhibit 2 as follows
Access Point Name AP2
Exhibit 3 as follows
Access Point Name AP3
質問 # 31
A company receives a cease-and-desist order from its ISP regarding prohibited torrent activity. Which of the following should be implemented to comply with the cease-and-desist order?
- A. Screened subnet
- B. Perimeter network
- C. Content filtering
- D. MAC security
正解：C
解説：
Content filtering can be used to block or restrict access to websites and services that facilitate torrenting and other prohibited activities. By implementing content filtering, the company can comply with the ISP's cease- and-desist order and prevent users from accessing torrent sites and engaging in prohibited activities.
References: CompTIA Network+ study materials.
質問 # 32
A support agent receives a report that a remote user's wired devices are constantly disconnecting and have slow speeds. Upon inspection, the support agent sees that the user's coaxial modern has a signal power of
-97dB.
- A. Moving the devices closer to the modern
- B. Lowering the network speed
- C. Removing any spliters connecte to the line
- D. Switching the devices to wireless
正解：C
解説：
A signal power of -97dB indicates a very weak signal, which can cause connectivity issues and slow speeds.
Splitters on a coaxial line can degrade the signal quality further, so removing them can help improve the signal strength and overall connection quality.
* Signal Quality: Splitters can reduce the signal strength by dividing the signal among multiple lines, which can be detrimental when the signal is already weak.
* Direct Connection: Ensuring a direct connection from the modem to the incoming line can maximize signal quality and reduce potential points of failure.
Network References:
* CompTIA Network+ N10-007 Official Certification Guide: Discusses troubleshooting connectivity issues and the impact of signal strength on network performance.
* Cisco Networking Academy: Provides insights on maintaining optimal signal quality in network setups.
* Network+ Certification All-in-One Exam Guide: Covers common network issues, including those related to signal degradation and ways to mitigate them.
質問 # 33
Which of the following most likely determines the size of a rack for installation? (Select two).
- A. Switch depth
- B. Cooling fan speed
- C. Hard drive size
- D. Server height
- E. KVM size
- F. Outlet amperage
正解：A
解説：
* Understanding Rack Size Determination:
* The size of a rack for installation is determined by the dimensions of the equipment to be housed in it, primarily focusing on the depth and height of the devices.
* Switch Depth:
* Depth of Equipment: The depth of network switches and other rack-mounted devices directly influences the depth of the rack. If the equipment is deeper, a deeper rack is required to accommodate it.
* Industry Standards: Most racks come in standard depths, but it is essential to match the depth of the rack to the deepest piece of equipment to ensure proper fit and airflow.
* Server Height:
* Height of Equipment: The height of servers and other devices is measured in rack units (U), where 1U equals 1.75 inches. The total height of all equipment determines the overall height requirement of the rack.
* Rack Units: A rack's height is typically described in terms of the number of rack units it can accommodate, such as 42U, 48U, etc.
* Why Other Options are Less Relevant:
* KVM Size: While important for management, KVM (Keyboard, Video, Mouse) switches do not typically determine rack size.
* Hard Drive Size: Individual hard drives are installed within servers or storage devices, not directly influencing rack dimensions.
* Cooling Fan Speed: Fan speed affects cooling but not the physical size of the rack.
* Outlet Amperage: Power requirements do not determine rack dimensions but rather the electrical infrastructure supporting the rack.
References:
* CompTIA Network+ study materials on rack installation and equipment sizing.
質問 # 34
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. Establish a theory.
- B. Implement the solution.
- C. Verify functionality.
- D. Create a plan of action.
正解：C
解説：
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).
質問 # 35
As part of an attack, a threat actor purposefully overflows the content-addressable memory (CAM) table on a switch. Which of the following types of attacks is this scenario an example of?
- A. Evil twin
- B. ARP spoofing
- C. MAC flooding
- D. DNS poisoning
正解：C
解説：
Definition of MAC Flooding:
MAC flooding is an attack where a malicious actor sends numerous fake MAC addresses to a switch, overwhelming its CAM table. The CAM table stores MAC addresses and their associated ports for efficient traffic forwarding.
Impact of MAC Flooding:
CAM Table Overflow: When the CAM table is full, the switch cannot learn new MAC addresses and is forced to broadcast traffic to all ports, leading to a degraded network performance and potential data interception.
Switch Behavior: The switch operates in a fail-open mode, treating the network as a hub, which can be exploited for eavesdropping on traffic.
Comparison with Other Attacks:
ARP Spoofing: Involves sending false ARP (Address Resolution Protocol) messages to associate the attacker's MAC address with the IP address of another device.
Evil Twin: Involves creating a rogue wireless access point that mimics a legitimate one to intercept data.
DNS Poisoning: Involves corrupting the DNS cache with false information to redirect traffic to malicious sites.
Preventive Measures:
Port Security: Configure port security on switches to limit the number of MAC addresses per port, preventing CAM table overflow.
Network Segmentation: Use VLANs to segment network traffic and limit the impact of such attacks.
Reference:
CompTIA Network+ study materials on network security threats and mitigation techniques.
質問 # 36
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