[2025年04月02日] 合格率取得する秘訣はN10-008認定試験エンジンPDF [Q265-Q288]

[2025年04月02日] 合格率取得する秘訣はN10-008認定試験エンジンPDF

N10-008試験問題集合格できるには更新された2025年04月テスト問題集

質問 # 265
Switch 3 was recently added lo an existing stack to extend connectivity to various parts of the network. After the update, new employees were not able to print to the main networked copiers from then workstations. Following are the port configurations for the switch stack in question:
Which of the following should be configured to resolve the issue? (Select TWO).

A. Reconfigure the duplex settings on the printer ports on Switch 3.
B. Enable wireless APs on Switch 3.
C. Enable all ports that are shut down on me stack.
D. Reconfigure the VLAN on an printer ports to VLAN 20.
E. Enable the printer ports on Switch 3.
F. Reconfigure me VLAN on the printer ports on Switch 3.

正解：E、F

質問 # 266
A technician is installing the Wi-Fi infrastructure for legacy industrial machinery at a warehouse. The equipment only supports 802.11a and 802.11b standards. Speed of transmission is the top business requirement. Which of the following is the correct maximum speed for this scenario?

A. 11Mbps
B. 144Mbps
C. 54Mbps
D. 128Mbps

正解：C

解説：
Explanation
802.11b (Wi-Fi 1)
11 Mbps
100 meter maximum effective range
802.11a (Wi-Fi 2)
54 Mbps
50 meter maximum effective range

質問 # 267
A technician is troubleshooting reports that a networked printer is unavailable. The printer's IP address is configured with a DHCP reservation, but the address cannot be pinged from the print server in the same subnet. Which of the following is MOST likely the cause of me connectivity failure?

A. DNS failure
B. Incorrect VLAN
C. DHCP scope exhaustion
D. Incorrect gateway

正解：B

解説：
A VLAN is a virtual local area network that logically separates devices on the same physical network. VLANs can improve network performance, security, and management by reducing broadcast domains and isolating traffic.
A DHCP reservation is a feature that allows a network administrator to assign a specific IP address to a device based on its MAC address. This ensures that the device always receives the same IP address from the DHCP server, even if the lease expires or the device reboots.
A networked printer is a device that can be shared by multiple users on the same network. A networked printer typically has a built-in network interface card (NIC) that allows it to communicate with other devices using TCP/IP protocols.
A print server is a device or a software application that manages the printing requests from multiple clients. A print server can also provide additional features such as print queue management, printer driver installation, and printer status monitoring.
A subnet is a logical division of an IP network that allows devices to communicate more efficiently and securely. A subnet is defined by a network address and a subnet mask, which determine the range of valid IP addresses within the subnet. Devices on the same subnet can communicate directly with each other without the need for a router.
A ping is a network diagnostic tool that tests the connectivity and reachability between two devices by sending and receiving echo packets. A ping request can fail for various reasons, such as network congestion, firewall settings, routing issues, or device configuration errors.
Based on the question, the networked printer is unavailable because it cannot be pinged from the print server in the same subnet. This means that there is a problem with the layer 2 connectivity between the two devices, which is determined by the MAC addresses and the VLANs. The most likely cause of this problem is that the printer and the print server are on different VLANs, which prevents them from communicating with each other. The other options are less likely because they affect the layer 3 connectivity, which is determined by the IP addresses and the gateways. A DNS failure would not affect the ping request, since it uses IP addresses and not hostnames. A DHCP scope exhaustion would not affect the printer, since it has a DHCP reservation that guarantees its IP address. An incorrect gateway would not affect the communication within the same subnet, since it is only used for routing packets to other networks. Reference:
CompTIA Network+ N10-008 Study Guide, Chapter 2: Network Devices and Technologies, Section 2.2: Network Device Functions and Features, Subsection: Print Servers, pp. 76-77.
CompTIA Network+ N10-008 Study Guide, Chapter 3: Network Operations, Section 3.3: Network Configuration Management, Subsection: DHCP, pp. 144-146.
CompTIA Network+ N10-008 Study Guide, Chapter 4: Network Security, Section 4.2: Network Segmentation and Isolation, Subsection: VLANs, pp. 202-204.
Professor Messer's CompTIA N10-008 Network+ Course Notes, Section 1.5: Network Troubleshooting Methodology, Subsection: Identify the Problem, pp. 16-17.
Professor Messer's CompTIA N10-008 Network+ Course Notes, Section 2.2: Network Devices, Subsection: Print Servers, p. 28.
Professor Messer's CompTIA N10-008 Network+ Course Notes, Section 2.6: Network Addressing, Subsection: DHCP, p. 38.
Professor Messer's CompTIA N10-008 Network+ Course Notes, Section 2.7: Network Addressing, Subsection: Subnetting, p. 39.
Professor Messer's CompTIA N10-008 Network+ Course Notes, Section 3.5: Network Segmentation, Subsection: VLANs, p. 58.

質問 # 268
A network architect is developing documentation for an upcoming IPv4/IPv6 dual-stack implementation The architect wants to shorten the following IPv6 address: ef82:0000:00O0:000O:0O00:1ab1:1234:1bc2. Which of the following is the MOST appropriate shortened version?

A. ef82:0:0:0:0:1ab1:1234:1bc2
B. ef82:0:lab1:1234:1bc2
C. ef82:0:;1ab1:1234:1bc2
D. ef82::1ab1:1234:1bc2

正解：D

解説：
The most appropriate shortened version of the IPv6 address ef82:0000:00O0:000O:0O00:1ab1:1234:1bc2 is ef82::1ab1:1234:1bc2. IPv6 addresses are 128-bit hexadecimal values that are divided into eight groups of 16 bits each, separated by colons. IPv6 addresses can be shortened by using two rules: omitting leading zeros within each group, and replacing one or more consecutive groups of zeros with a double colon (::). Only one double colon can be used in an address. Applying these rules to the given address results in ef82::1ab1:1234:1bc2. Reference: CompTIA Network+ N10-008 Certification Study Guide, page 114; The Official CompTIA Network+ Student Guide (Exam N10-008), page 5-7.

質問 # 269
Which of the following documents would be used to define uptime commitments from a provider, along with details on measurement and enforcement?

A. SLA
B. NDA
C. MOU
D. AUP

正解：A

解説：
Explanation
A service level agreement (SLA) is a document that is used to define uptime commitments from a provider, along with details on measurement and enforcement. An SLA is a contract between a service provider and a customer that outlines the level of service that the provider is committed to providing and the terms under which that service will be delivered.

質問 # 270
A company that uses VoIP telephones is experiencing intermittent issues with one-way audio and dropped conversations The manufacturer says the system will work if ping times are less than 50ms. The company has recorded the following ping times:

Which of the following is MOST likely causing the issue?

A. Jitter
B. VLAN mismatch
C. Attenuation
D. Latency

正解：A

解説：
Jitter is most likely causing the issue of intermittent one-way audio and dropped conversations for the company that uses VoIP telephones. Jitter is a variation in delay of packets arriving at the destination. It can cause choppy or distorted audio quality for VoIP applications, especially over WAN links that have limited bandwidth and high latency. The recommended jitter for VoIP is less than 10ms1. The company has recorded ping times that exceed 50ms, which indicates high jitter and latency on their network. References:
https://www.voip-info.org/voip-jitter/ 1

質問 # 271
A network administrator is decommissioning a server. Which of the following will the network administrator MOST likely consult?

A. Password requirements
B. Onboarding and off boarding policies
C. Business continuity plan
D. Change management documentation

正解：D

解説：
When decommissioning a server, it is important to follow proper change management procedures to ensure that the process is documented and executed correctly. The change management documentation will typically outline the steps that should be followed when decommissioning a server, including any required approvals, notifications, or testing procedures.

質問 # 272
A customer is hosting an internal database server. None of the users are able to connect to the server, even though it appears to be working properly. Which of the following is the best way to verify traffic to and from the server?

A. nmap
B. ipconfig
C. Protocol analyzer
D. Speed test

正解：C

解説：
A protocol analyzer is the best way to verify traffic to and from the server. A protocol analyzer, also known as a packet sniffer or network analyzer, is a tool that captures and analyzes the network packets that are sent and received by a device. A protocol analyzer can show the source and destination IP addresses, ports, protocols, and payload of each packet, as well as any errors or anomalies in the network communication. A protocol analyzer can help troubleshoot network connectivity issues by identifying the root cause of the problem, such as misconfigured firewall rules, incorrect routing, or faulty network devices12.
To use a protocol analyzer to verify traffic to and from the server, the customer can follow these steps:
* Install a protocol analyzer tool on a device that is connected to the same network as the server, such as Wireshark3 or Microsoft Network Monitor4.
* Select the network interface that is used to communicate with the server, and start capturing the network traffic.
* Filter the captured traffic by using the IP address or hostname of the server, or by using a specific port or protocol that is used by the database service.
* Analyze the filtered traffic and look for any signs of successful or failed connection attempts, such as TCP SYN, ACK, or RST packets, or ICMP messages.
* If there are no connection attempts to or from the server, then there may be a problem with the network configuration or device settings that prevent the traffic from reaching the server.
* If there are connection attempts but they are rejected or dropped by the server, then there may be a problem with the server configuration or service settings that prevent the traffic from being accepted by the server.
The other options are not the best ways to verify traffic to and from the server. nmap is a tool that can scan a network and discover hosts and services, but it cannot capture and analyze the network packets in detail.
ipconfig is a command that can display and configure the IP settings of a device, but it cannot monitor or test the network communication with another device. Speed test is a tool that can measure the bandwidth and latency of a network connection, but it cannot diagnose or troubleshoot specific network problems.

質問 # 273
A company wants to add a local redundant data center to its network in case of failure at its primary location. Which of the following would give the LEAST amount of redundancy for the company's network?

A. Cloud site
B. Hot site
C. Warm site
D. Cold site

正解：D

質問 # 274
Which of the following would be BEST to install to find and block any malicious users within a network?

A. ICS
B. IPS
C. IDS
D. SCADA

正解：B

解説：
After detecting an anomaly, the IPS device will perform inspection in real-time for every packet traveling in the network. If it finds any packet suspicious, the IPS can block the suspicious user or IP address from accessing the network or application, terminate its TCP session, reconfigure or reprogram the firewall, or replace or remove malicious content if it remains after the attack.

質問 # 275
Which of the following network topologies best describes a central device connected to multiple independent devices?

A. Ring
B. Hub-and-spoke
C. Bus
D. Mesh

正解：B

解説：
Explanation
Hub-and-spoke is the network topology that best describes a central device connected to multiple independent devices. A network topology is the physical or logical arrangement of devices and links on a network. A hub-and-spoke topology is a type of star topology, where a central device, such as a switch or a router, acts as a hub that connects to multiple devices, such as computers or printers, that act as spokes. A hub-and-spoke topology can offer advantages such as simplicity, scalability, and reliability, but also disadvantages such as single point of failure, high dependency on the hub, and increased latency. References: [CompTIA Network+ Certification Exam Objectives], Hub-and-Spoke Topology: What Is It? (Diagram Included) | SolarWinds MSP

質問 # 276
A network security engineer is investigating a potentially malicious Insider on the network. The network security engineer would like to view all traffic coming from the user's PC to the switch without interrupting any traffic or having any downtime. Which of the following should the network security engineer do?

A. Implement dynamic ARP inspection.
B. Enable port mirroring.
C. Configure 802.1Q.
D. Turn on port security.

正解：B

解説：
Port mirroring is a feature that allows a network switch to copy the traffic from one or more ports to another port for monitoring purposes. Port mirroring can be used to analyze the network traffic from a specific source, destination, or protocol without affecting the normal operation of the network. Port mirroring can also help to detect and troubleshoot network problems, such as performance issues, security breaches, or policy violations.
The other options are not correct because they do not meet the requirements of the question. They are:
Turn on port security. Port security is a feature that restricts the number and type of devices that can connect to a switch port. Port security can help to prevent unauthorized access, MAC address spoofing, or MAC flooding attacks. However, port security does not allow the network security engineer to view the traffic from the user's PC to the switch.
Implement dynamic ARP inspection. Dynamic ARP inspection (DAI) is a feature that validates the ARP packets on a network and prevents ARP spoofing attacks. DAI can help to protect the network from man-in-the-middle, denial-of-service, or data interception attacks. However, DAI does not allow the network security engineer to view the traffic from the user's PC to the switch.
Configure 802.1Q. 802.1Q is a standard that defines how to create and manage virtual LANs (VLANs) on a network. VLANs can help to segment the network into logical groups based on function, security, or performance. However, 802.1Q does not allow the network security engineer to view the traffic from the user's PC to the switch.
Reference
1: Port Mirroring - an overview | ScienceDirect Topics
2: Network+ (Plus) Certification | CompTIA IT Certifications
3: Port Security - an overview | ScienceDirect Topics
4: Dynamic ARP Inspection - an overview | ScienceDirect Topics
5: 802.1Q - an overview | ScienceDirect Topics

質問 # 277
A network engineer is installing hardware in a newly renovated data center. Major concerns that were addressed during the renovation included air circulation, building power redundancy, and the need for continuous monitoring. The network engineer is creating alerts based on the following operation specifications:

A. Environmental monitoring alerts for humidity greater than 95%
B. SNMP traps to report when the chassis temperature exceeds 95°F (35°C)
C. SIEM to parse syslog events for a failed power supply
D. UPS monitoring to report when input voltage drops below 220VAC

正解：C

質問 # 278
A company's primary ISP is experiencing an outage. However, the network administrator notices traffic continuing to flow through a secondary connection to the same ISP. Which of the following BEST describes this configuration?

A. Diverse paths
B. Virtual Router Redundancy Protocol
C. Load balancing
D. Multipathing

正解：A

解説：
It's very common for ISPs to share common lines and such, especially when they are servicing the same physical location. It's therefore critically important to ensure path diversity, where the lines out of your ISP follow diverse paths to other routers. A common method for path diversity in smaller centers, for example, uses a fiber connection for the primary path and a very fast cellular connection as a failover. Use of both a fiber ISP and a different cable ISP can also lead to path diversity.

質問 # 279
A network technician is working at a new office location and needs to connect one laptop to another to transfer files. The laptops are newer models and do not have Ethernet ports. Access points are not available either. Which of the following types of wireless network SSIDs does the network technician need to configure to be able to connect the laptops together?

A. Distribution System Service
B. Extended Service Set
C. Basic Service Set
D. Independent Basic Service Set

正解：C

質問 # 280
An administrator wants to host services on the internet using an internal server. The server is configured with an RFC1918 address, and the administrator wants to make the services that are hosted on the server available on one of the company's public IP addresses. Which of the following should the administrator configure to allow this access?

A. Virtual IP
B. IPv6 tunneling
C. EUI-64
D. Dual stack

正解：A

質問 # 281
A global company has acquired a local company. The companies are geographically separate. The IP address ranges for the two companies are as follows:
* Global company: 10.0.0.0/16
* Local company: 10.0.0.0/24
Which of the following can the network engineer do to quickly connect the two companies?

A. Assign static routing to advertise the local company's network.
B. Assign a NAT range to the local company.
C. Assign a new IP address range to the local company.
D. Assign an overlapping IP address range to both companies.

正解：C

解説：
Assigning a new IP address range to the local company is the best option to quickly connect the two companies without causing any IP address conflicts or overlaps. This option requires reconfiguring the local company's network devices and updating the routing tables on both sides, but it avoids the need for any NAT or static routing solutions that may introduce additional complexity, cost, or performance issues12 Reference1: Connecting Networks with Overlapping IP Ranges 2: What Is Network Address Translation (NAT)?

質問 # 282
Which of the following is an example of on-demand scalable hardware that is typically housed in the vendor's data center?

A. DaaS
B. IaaS
C. PaaS
D. SaaS

正解：B

解説：
* IaaS (Infrastructure as a Service) is a cloud computing model that provides on-demand scalable hardware resources, such as servers, storage, network, and virtualization, that are typically housed in the vendor's data center12.
* IaaS allows customers to pay only for the resources they use, and to scale up or down as needed, without having to invest in or maintain their own physical infrastructure12.
* IaaS is different from other cloud computing models, such as DaaS (Desktop as a Service), PaaS (Platform as a Service), and SaaS (Software as a Service), which provide different levels of abstraction and functionality12.
* DaaS delivers virtual desktops to users over the internet, allowing them to access their applications and data from any device3.
* PaaS provides a platform for developing, testing, and deploying applications, without having to manage the underlying infrastructure or software.
* SaaS delivers software applications over the internet, without requiring installation or maintenance on the user's device. References:
* [CompTIA Network+ N10-008 Certification Study Guide], Chapter 8: Cloud Computing, Section:
Cloud Computing Models
* [Professor Messer's CompTIA N10-008 Network+ Course Notes], Page 58: Cloud Computing Models
* [CompTIA Network+ N10-008 Certification Study Guide], Chapter 8: Cloud Computing, Section:
Desktop as a Service (DaaS)
* [CompTIA Network+ N10-008 Certification Study Guide], Chapter 8: Cloud Computing, Section:
Platform as a Service (PaaS)
* [CompTIA Network+ N10-008 Certification Study Guide], Chapter 8: Cloud Computing, Section:
Software as a Service (SaaS)
* IaaS (Infrastructure as a Service) is a cloud computing model that provides on-demand scalable hardware resources, such as servers, storage, network, and virtualization, that are typically housed in the vendor's data center12.
* IaaS allows customers to pay only for the resources they use, and to scale up or down as needed, without having to invest in or maintain their own physical infrastructure12.
* IaaS is different from other cloud computing models, such as DaaS (Desktop as a Service), PaaS (Platform as a Service), and SaaS (Software as a Service), which provide different levels of abstraction and functionality12.
* DaaS delivers virtual desktops to users over the internet, allowing them to access their applications and data from any device3.
* PaaS provides a platform for developing, testing, and deploying applications, without having to manage
* the underlying infrastructure or software.
* SaaS delivers software applications over the internet, without requiring installation or maintenance on the user's device. References:
* [CompTIA Network+ N10-008 Certification Study Guide], Chapter 8: Cloud Computing, Section:
Cloud Computing Models
* [Professor Messer's CompTIA N10-008 Network+ Course Notes], Page 58: Cloud Computing Models
* [CompTIA Network+ N10-008 Certification Study Guide], Chapter 8: Cloud Computing, Section:
Desktop as a Service (DaaS)
* [CompTIA Network+ N10-008 Certification Study Guide], Chapter 8: Cloud Computing, Section:
Platform as a Service (PaaS)
* [CompTIA Network+ N10-008 Certification Study Guide], Chapter 8: Cloud Computing, Section:
Software as a Service (SaaS)

質問 # 283
A technician must install and configure a network device in a building with 20 classrooms. Each room must be on a separate subnet and should not be able to see traffic from other subnets.
Which of the following is the MOST cost-effective solution?

A. A router with interfaces connected to a switch in each room
B. A firewall with DHCP pools for each subnet
C. A switch with VLANs created for each segment
D. A VoIP endpoint connected to a hub for each network

正解：C

質問 # 284
A help desk supervisor reviews the following excerpt of a call transcript:

Which of the following was the agent trying to accomplish with this exchange?

A. The agent was identifying potential effects.
B. The agent was verifying full system functionality
C. The agent was trying to duplicate the problem.
D. The agent was questioning the obvious.

正解：C

解説：
Explanation
The agent was trying to duplicate the problem by asking the user to perform the same steps that led to the issue. This is a common troubleshooting technique that helps the agent to identify the root cause of the problem and verify if it is reproducible or intermittent. By duplicating the problem, the agent can also gather more information about the symptoms and error messages that the user encountered. References: [CompTIA Network+ Certification Exam Objectives], [Troubleshooting Methodology - CompTIA Network+ N10-007 -
1.4 | Professor Messer IT Certification Training Courses]

質問 # 285
A company wants to mitigate unauthorized physical connectivity after implementing a hybrid work schedule.
Which of the following will the company most likely configure?

A. ARP inspection
B. DHCP snooping
C. Port security
D. Intrusion prevention system

正解：C

解説：
Port security is a feature that allows network administrators to limit the number of devices that can connect to a switch port, based on the MAC address of the device. This can prevent unauthorized physical connectivity by blocking any device that is not on the allowed list or exceeding the maximum number of devices per port.
Port security can also trigger an action, such as shutting down the port or sending an alert, when a violation occurs. References: CompTIA Network+ N10-008 Cert Guide - O'Reilly Media, Chapter 14: Securing a Basic Network, page 512

質問 # 286
A network technician needs to install patch cords from the UTP patch panel to the access switch for a newly occupied set of offices. The patch panel is not labeled for easy jack identification. Which of the following tools provides the easiest way to identify the appropriate patch panel port?

A. Cable tester
B. Laptop
C. Visual fault locator
D. Toner

正解：D

解説：
Explanation
A toner is a tool that generates an audible signal that can be traced by a probe. A network technician can use a toner to identify the appropriate patch panel port by connecting the toner to one end of the patch cord and using the probe to scan the patch panel until the signal is detected. A toner is the easiest way to identify the patch panel port when the patch panel is not labeled, as it does not require a laptop, a cable tester, or a visual fault locator. A toner can also be used to locate breaks or shorts in a cable, or to verify continuity.
References:
Using a Toner and Probe - CompTIA Network+ Certification (N10-008): The Total Course Video CompTIA Network+ Certification Exam Objectives, page 141

質問 # 287
A device is connected to a managed Layer 3 network switch. The MAC address of the device is known, but the static IP address assigned to the device is not. Which of the following features of a Layer 3 network switch should be used to determine the IPv4 address of the device?