N10-008認証試験の問題集解答を提供しています [2023年10月]
更新されたN10-008試験練習テスト問題
Comptia Network+認定試験としても知られるComptia N10-008は、IT業界でキャリアを確立しようとする個人向けの世界的に認められた認定プログラムです。この認定は、有線およびワイヤレスネットワークの設計、構成、管理、トラブルシューティングに必要なスキルと知識を検証するように設計されています。
CompTIA N10-008の試験に備えて、候補者は、様々なトレーニングプログラム、学習ガイド、オンラインコースを選択することができます。CompTIAは、公式の認定学習ガイドや練習問題集も提供しており、候補者が試験に備えるための支援を行っています。候補者は、オンラインフォーラムやディスカッショングループに参加し、他の候補者との交流や学習体験の共有をすることもできます。
CompTIA N10-008試験に準備するために、候補者は、学習ガイド、練習問題、オンライントレーニングコースなど、さまざまなリソースを活用することができます。これらのリソースは、試験に合格し認定を取得するために必要な知識とスキルを提供します。さらに、候補者は、エントリーレベルのネットワークポジションで働くか、インターンシップや見習い制度に参加することで、ネットワーク技術に対する実践的な経験を積むことができます。
質問 # 179
A company has a geographically remote office concern for this type of connection?
- A. Jitter
- B. Encapsulation
- C. Collisions
- D. Duplex
正解：A
解説：
Explanation
Jitter is the variation in the delay of packets arriving at a destination. Jitter can cause problems for real-time applications, such as voice and video, that require consistent and smooth delivery of packets. A geographically remote office that connects to the main office via a WAN link may experience high jitter due to factors such as network congestion, routing changes, or link quality. Jitter can be reduced by using quality of service (QoS) mechanisms that prioritize and shape traffic according to its importance and sensitivity. References:
[CompTIA Network+ Certification Exam Objectives], What is Jitter? | Network Jitter Explained | SolarWinds
質問 # 180
A company wants to implement a large number of WAPs throughout its building and allow users to be able to move around the building without dropping their connections Which of the following pieces of equipment would be able to handle this requirement?
- A. A RADIUS server
- B. A wireless controller
- C. A load balancer
- D. A VPN concentrator
正解：D
質問 # 181
Which of the following IP packet header fields is the mechanism for ending loops at Layer 3?
- A. Checksum
- B. Time-to-live
- C. Protocol
- D. Type
正解：B
解説：
Explanation
The time-to-live (TTL) field is the mechanism for ending loops at Layer 3, which is the network layer of the OSI model. The TTL field is an 8-bit field that indicates the maximum time or number of hops that an IP packet can travel before it is discarded. Every time an IP packet passes through a router, the router decrements the TTL value by one. If the TTL value reaches zero, the router drops the packet and sends an ICMP message back to the source, informing that the packet has expired. This way, the TTL field prevents an IP packet from looping endlessly in a network with routing errors or cycles123.
The other options are not mechanisms for ending loops at Layer 3. The checksum field is a 16-bit field that is used to verify the integrity of the IP header. The checksum field is calculated by adding all the 16-bit words in the header and taking the one's complement of the result. If the checksum field does not match the calculated value, the IP packet is considered corrupted and discarded12. The type field, also known as the type of service (TOS) or differentiated services code point (DSCP) field, is an 8-bit field that is used to specify the quality of service (QoS) or priority of the IP packet. The type field can indicate how the packet should be handled in terms of delay, throughput, reliability, or cost12. The protocol field is an 8-bit field that is used to identify the transport layer protocol that is encapsulated in the IP packet. The protocol field can indicate whether the payload is a TCP segment, a UDP datagram, an ICMP message, or another protocol12.
質問 # 182
A technician manages a DHCP scope but needs to allocate a portion of the scope's subnet for statically assigned devices. Which of the following DHCP concepts would be BEST to use to prevent IP address conflicts?
- A. Address reservation
- B. Exclusion range
- C. Dynamic assignment
- D. IP helper
正解：B
解説：
Explanation
To prevent IP address conflicts when allocating a portion of a DHCP scope's subnet for statically assigned devices, it is recommended to use the concept of DHCP exclusion ranges. DHCP exclusion ranges allow a DHCP administrator to specify a range of IP addresses within the scope that should not be assigned to DHCP clients. This can be useful in situations where some devices on the network need to be assigned static IP addresses, as it ensures that the statically assigned addresses do not overlap with addresses assigned by the DHCP server. To set up a DHCP exclusion range, the administrator needs to specify the start and end IP addresses of the range, as well as the subnet mask. The DHCP server will then exclude the specified range of addresses from its pool of available addresses, and will not assign them to DHCP clients. By using DHCP exclusion ranges, the technician can ensure that the statically assigned addresses do not conflict with addresses assigned by the DHCP server, and can prevent IP address conflicts on the network.
Anthony Sequeira
"Another frequent configuration you might make in a DHCP implementation is to configure an exclusion range. This is a portion of the address pool that you never want leased out to clients in the network. Perhaps you have numbered your servers 192.168.1.1-192.168.1.10. Because the servers are statically configured with these addresses, you exclude these addresses from the 192.168.1.0/24 pool of addresses." Mike Meyers
"Exclusion ranges represent an IP address or range of IP addresses from the pool of addresses that are not to be given out by the DHCP server. Exclusions should be made for the static addresses manually configured on servers and router interfaces, so these IP addresses won't be offered to DHCP clients."
質問 # 183
A network technician is attempting to increase throughput by configuring link port aggregation between a Gigabit Ethernet distribution switch and a Fast Ethernet access switch. Which of the following is the BEST choice concerning speed and duplex for all interfaces that are participating in the link aggregation?
- A. Full duplex and 100MB speed
- B. Half duplex and 1GB speed
- C. Full duplex and 1GB speed
- D. Half duplex and 10OMB speed
正解：C
解説：
The best choice for configuring link port aggregation between a Gigabit Ethernet distribution switch and a Fast Ethernet access switch is to use full duplex and 1GB speed for all interfaces that are participating in the link aggregation. This will allow for maximum throughput, as the full duplex connection will enable simultaneous sending and receiving of data, and the 1GB speed will ensure that the data is transferred quickly.
According to the CompTIA Network+ Study Guide, "Full-duplex Ethernet allows the network adapter to transmit and receive data simultaneously, which can result in double the bandwidth of half-duplex Ethernet." Additionally, the official text states, "Ethernet and Fast Ethernet use different speeds for data transmission, with Ethernet being 1,000 megabits (1 gigabit) per second and Fast Ethernet being 100 megabits per second."
質問 # 184
A technician is installing a high-density wireless network and wants to use an available frequency that supports the maximum number of channels to reduce interference. Which of the following standard 802.11 frequency ranges should the technician look for while reviewing WAP specifications?
- A. 2.4GHz
- B. 900MHz
- C. 6GHz
- D. 5GHz
正解：D
解説：
Explanation
802.11a/b/g/n/ac wireless networks operate in two frequency ranges: 2.4 GHz and 5 GHz. The 5 GHz frequency range supports more channels than the 2.4 GHz frequency range, making it a better choice for high-density wireless networks.
References: CompTIA Network+ Certification Study Guide, Sixth Edition by Glen E. Clarke
質問 # 185
A network administrator installed an additional IDF during a building expansion project. Which of the following documents need to be updated to reflect the change? (Select TWO).
- A. Non-disclosure agreement
- B. Data loss prevention policy
- C. BYOD policy
- D. Physical network diagram
- E. Disaster recovery plan
- F. Acceptable use policy
正解：C、D
質問 # 186
A technician is connecting a Cat 6 Ethernet cable to a device mat only has LC poos. Which of the following win the technician MOST likely use to accomplish this task?
- A. A bridge
- B. A media converter
- C. A router
- D. A repeater
正解：B
質問 # 187
On a network with redundant switches, a network administrator replaced one of the switches but was unable to get a connection with another switch. Which of the following should the administrator chock after successfully testing the cable that was wired for TIA/EIA-568A on both ends?
- A. If PoE is enabled
- B. If MDIX is enabled on the new switch
- C. If STP is disabled on the switches
- D. If a plenum cable is being used
正解：B
解説：
Explanation
Auto-MDIX (or medium dependent interface crossover) is a feature that automatically detects the type of cable connection and configures the interface accordingly (i.e. straight-through or crossover). This ensures that the connection between the two switches is successful. This is referenced in the CompTIA Network+ Study Manual, page 519.
質問 # 188
An organization set up its offices so that a desktop is connected to the network through a VoIP phone. The VoIP vendor requested that voice traffic be segmented separately from non-voice traffic. Which of the following would allow the organization to configure multiple devices with network isolation on a single switch port?
- A. Link aggregation
- B. Load balancing
- C. Tunneling
- D. Subinterfaces
正解：D
質問 # 189
A security engineer is trying to determine whether an internal server was accessed by hosts on the internet.
The internal server was shut down during the investigation Which of the following will the engineer review to determine whether the internal server had an unauthorized access attempt?
- A. The NetFlow statistics
- B. The audit logs on the core switch
- C. The firewall logs
- D. The server's syslog
正解：D
質問 # 190
An ISP is unable to provide services to a user in a remote area through cable and DSL. Which of the following is the NEXT best solution to provide services without adding external infrastructure?
- A. Satellite
- B. Leased line
- C. Metro optical
- D. Fiber
正解：A
解説：
Explanation
If an ISP is unable to provide services to a user in a remote area through cable and DSL, the next best solution to provide services without adding external infrastructure would likely be satellite. Satellite is a wireless communication technology that uses a network of satellites orbiting the Earth to transmit and receive data. It is well-suited for providing connectivity to remote or rural areas where other types of infrastructure may not be available or may be cost-prohibitive to install.
質問 # 191
Due to a surge in business, a company is onboarding an unusually high number of salespeople. The salespeople are assigned desktops that are wired to the network. The last few salespeople to be onboarded are able to access corporate materials on the network but not sales-specific resources. Which of the following is MOST likely the cause?
- A. Newly added machines are running into DHCP conflicts.
- B. Recently added users were assigned to the wrong VLAN
- C. The switch was configured with port security.
- D. The IPS was not configured to recognize the new users.
正解：B
質問 # 192
Given the following information:
Which of the following command-line tools would generate this output?
- A. tracert
- B. netstat
- C. arp
- D. dig
正解：A
解説：
Explanation
Tracert is a command-line tool that traces the route of a packet from a source to a destination and displays the number of hops and the round-trip time for each hop. The output shown in the question is an example of a tracert output, which shows five hops with their IP addresses and hostnames (if available) and three latency measurements for each hop in milliseconds. References:
https://partners.comptia.org/docs/default-source/resources/comptia-network-n10-008-exam-objectives-(2-0),
https://www.lumen.com/help/en-us/network/traceroute/understanding-the-traceroute-output.html
質問 # 193
A new cabling certification is being requested every time a network technician rebuilds one end of a Cat 6 (vendor-certified) cable to create a crossover connection that is used to connect switches. Which of the following would address this issue by allowing the use of the original cable?
- A. LACP
- B. PoE+
- C. CSMA/CD
- D. MDIX
正解：D
解説：
Explanation
MDIX (medium-dependent interface crossover) is a feature that allows network devices to automatically detect and configure the appropriate cabling type, eliminating the need for crossover cables. By enabling MDIX on the switches, a technician can use the original Cat 6 cable to create a crossover connection.
References: CompTIA Network+ Certification Study Guide, Sixth Edition by Glen E. Clarke
質問 # 194
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