2025年03月 Cisco CCST-Networking日本語認定リアル2025年最新の模擬試験合格させます
CCST-Networking日本語試験問題と有効なCCST-Networking日本語問題集でPDF
質問 # 24
レイヤー 2 スイッチの管理 VLAN インターフェイスに IP アドレスを割り当てる目的は何ですか?
- A. TelnetまたはSSH経由でスイッチのCLIにアクセスできるようにする
- B. スイッチがネットワーク内の他のスイッチにDHCPサービスを提供できるようにする
- C. スイッチが接続されたデバイスのデフォルトゲートウェイとして機能するようにする
- D. スイッチが接続されたデバイスのURLを解決できるようにするには
正解：A
解説：
The primary purpose of assigning an IP address to the management VLAN interface on a Layer 2 switch is to facilitate remote management of the switch. By configuring an IP address on the management VLAN, network administrators can access the switch's Command Line Interface (CLI) remotely using protocols such as Telnet or Secure Shell (SSH). This allows for convenient configuration changes, monitoring, and troubleshooting without needing physical access to the switch1.
References :=
*Understanding the Management VLAN
*Cisco - VLAN Configuration Guide
*Remote Management of Switches
Assigning an IP address to the management VLAN interface (often the VLAN 1 interface by default) on a Layer 2 switch allows network administrators to remotely manage the switch using protocols such as Telnet or SSH. This IP address does not affect the switch's ability to route traffic between VLANs but provides a means to access and configure the switch through its Command Line Interface (CLI).
*A: The switch does not act as a default gateway; this is typically a function of a Layer 3 device like a router.
*B: The switch does not resolve URLs; this is typically a function of DNS servers.
*C: The switch can relay DHCP requests but does not typically provide DHCP services itself; this is usually done by a dedicated DHCP server or router.
Thus, the correct answer is D. To enable access to the CLI on the switch through Telnet or SSH.
References :=
*Cisco VLAN Management Overview
*Cisco Catalyst Switch Management
質問 # 25
ネットワーク上のすべてのユーザーがアクセスできるファイルを保存したい。
どのエンドポイントデバイスが必要ですか?
- A. サーバー
- B. アクセスポイント
- C. ハブ
- D. スイッチ
正解：A
解説：
To store files that will be accessible by every user on a network, you would need aserver. A server is a computer system that provides data to other computers. It can serve data to systems on a local network (LAN) or a wide network (WAN) over the internet.In this context, a file server would be set up to store and manage files, allowing users on the network to access them from their own devices1.
References:=
* What is a Server?
* Understanding Servers and Their Functions
A server is a computer designed to process requests and deliver data to other computers over a local network or the internet. In this case, to store files that will be accessible by every user on the network, a file server is the appropriate endpoint device. It provides a centralized location for storing and managing files, allowing users to access and share files easily.
* A. Access point: Provides wireless connectivity to a network.
* C. Hub: A basic networking device that connects multiple Ethernet devices together, making them act as a single network segment.
* D. Switch: A networking device that connects devices on a computer network by using packet switching to forward data to the destination device.
Thus, the correct answer is B. Server.
References:=
* File Server Overview (Cisco)
* Server Roles in Networking (Cisco)
質問 # 26
ユーザーから、会社の Web サイトが利用できないという報告がありました。ヘルプ デスクの技術者は、tracert コマンドを発行して、Web サイトをホストしているサーバーがネットワーク経由でアクセス可能かどうかを判断します。コマンドの出力は次のようになります。
コマンド出力から何がわかりますか?
- A. ホップ 3 のルータは、IP アドレス 192.168.1.10 にパケットを転送していません。
- B. アドレス 192.168.1.10 のサーバーはネットワーク経由でアクセスできます。
- C. サーバー アドレス 192.168.1.10 は、ホップ 3 のルーターのファイアウォールによってブロックされています。
- D. 192.168.1.10 の Web サーバーへの要求が遅延し、タイムアウトになりました。
正解：B
解説：
The tracert command output shows the path taken to reach the destination IP address, 192.168.1.10. The command output indicates:
*Hops 1 and 2 are successfully reached.
*Hop 3 times out, meaning the router at hop 3 did not respond to the tracert request. However, this does not necessarily indicate a problem with forwarding packets, as some routers may be configured to block or not respond to ICMP requests.
*Hops 4 and 5 are successfully reached, with hop 5 being the destination IP 192.168.1.10, indicating that the server is reachable.
Thus, the correct answer is C. The server with the address 192.168.1.10 is reachable over the network.
References :=
*Cisco Traceroute Command
*Understanding Traceroute
The tracert command output indicates that the server with the address 192.168.1.10 is reachable over the network. The asterisk (*) at hop 3 suggests that the probe sent to that hop did not return a response, which could be due to a variety of reasons such as a firewall blocking ICMP packets or the router at that hop being configured not to respond to ICMP requests. However, since the subsequent hops (4 and 5) are showing response times, it means that the packets are indeed getting through and the server is reachable12.
References :=
*How to Use Traceroute Command to Read Its Results
*How to Use the Tracert Command in Windows
質問 # 27
ヘルプ デスクの技術者は、以下にリストされている 4 つのトラブル チケットを受け取ります。どのチケットを最も優先して最初に対処する必要がありますか?
- A. チケット 1: ユーザーが、同じオフィス内の別のネットワーク ジャックにプリンターを再配置することを要求します。ジャックにパッチを適用してアクティブにする必要があります。
- B. チケット 3: ユーザーから、クラウドベースのアプリケーションの応答時間が通常よりも遅いという報告がありました。
- C. チケット 4: 2 人のユーザーから、カフェテリアのワイヤレス アクセスが過去 1 時間ダウンしていると報告がありました。
- D. チケット 2: 会議室でオンライン ウェビナーが開催されています。ビデオ会議機器のインターネット アクセスが失われました。
正解：D
解説：
When prioritizing trouble tickets, the most critical issues affecting business operations or high-impact activities should be addressed first. Here's a breakdown of the tickets:
* Ticket 1: Relocation of a printer, while necessary, is not urgent and does not impact critical operations.
* Ticket 2: An ongoing webinar losing internet access is critical, especially if the webinar is time-sensitive and involves multiple participants.
* Ticket 3: Slower response time for a cloud-based application is important but typically not as urgent as a complete loss of internet access for a live event.
* Ticket 4: Wireless access down in the cafeteria affects users but does not have the same immediate impact as a live webinar losing connectivity.
Thus, the correct answer is B. Ticket 2: An online webinar is taking place in the conference room. The video conferencing equipment lost internet access.
References:=
* IT Help Desk Best Practices
* Prioritizing IT Support Tickets
質問 # 28
帯域幅とスループットに関する各ステートメントについて、True または False を選択します。
注意: 正しい選択ごとに部分的なポイントが付与されます。
正解：
解説：
Explanation:
* Statement 1: Low bandwidth can increase network latency.
* True: Low bandwidth can result in increased network latency because the network may become congested, leading to delays in data transmission.
* Statement 2: High levels of network latency decrease network bandwidth.
* False: High levels of network latency do not decrease the available network bandwidth, but they do affect the perceived performance and throughput of the network.
* Statement 3: You can increase throughput by decreasing network latency.
* True: Decreasing network latency can increase throughput because data can be transmitted more quickly and efficiently without delays.
* Bandwidth vs. Latency: Bandwidth refers to the maximum rate at which data can be transferred over a network path. Latency is the time it takes for a data packet to travel from the source to the destination.
* Low bandwidth can cause network congestion, which can increase latency as packets wait to be transmitted.
* High latency does not reduce the actual bandwidth but can affect the overall performance and efficiency of data transmission.
* Reducing latency can lead to higher throughput because the network can handle more data in a given period without delays.
References:
* Network Performance Metrics: Cisco Network Performance
* Understanding Bandwidth and Latency: Bandwidth vs. Latency
質問 # 29
IP アドレス、ポート番号、またはアプリケーションに基づいてトラフィックを許可または拒否することでネットワークを保護するデバイスはどれですか?
- A. 侵入検知システム
- B. VPNゲートウェイ
- C. アクセスポイント
- D. ファイアウォール
正解：D
解説：
* Firewall: A firewall is a network security device that monitors and controls incoming and outgoing network traffic based on predetermined security rules. It permits or denies traffic based on IP addresses, port numbers, or applications.
* Access Point: This is a device that allows wireless devices to connect to a wired network using Wi-Fi. It does not perform traffic filtering based on IP, port, or application.
* VPN Gateway: This device allows for secure connections between networks over the internet, but it is not primarily used for traffic filtering based on IP, port, or application.
* Intrusion Detection System (IDS): This device monitors network traffic for suspicious activity and policy violations, but it does not actively permit or deny traffic.
References:
* Understanding Firewalls: Firewall Basics
質問 # 30
192.168.200.0/24 ネットワークに含まれるアドレスはどれですか?
- A. 192.168.200.13
- B. 192.168.201.13
- C. 192.168.199.13
- D. 192.168.1.13
正解：A
解説：
*192.168.200.0/24 Network: This subnet includes all addresses from 192.168.200.0 to 192.168.200.255. The
/24 indicates a subnet mask of 255.255.255.0, which allows for 256 addresses.
*192.168.199.13: This address is in the 192.168.199.0/24 subnet, not the 192.168.200.0/24 subnet.
*192.168.200.13: This address is within the 192.168.200.0/24 subnet.
*192.168.201.13: This address is in the 192.168.201.0/24 subnet, not the 192.168.200.0/24 subnet.
*192.168.1.13: This address is in the 192.168.1.0/24 subnet, not the 192.168.200.0/24 subnet.
References:
*Subnetting Guide: Subnetting Basics
質問 # 31
各プロトコルを左側のリストから右側の正しい例に移動します。
正解：
解説：
Explanation:
The correct matching of the protocols to their examples is as follows:
* DHCP: Assign the reserved IP address 10.10.10.200 to a web server at your company.
* DNS: Perform a query to translate companypro.net to an IP address.
* ICMP: Perform a ping to ensure that a server is responding to network connections.
Here's how each protocol corresponds to its example:
* DHCP (Dynamic Host Configuration Protocol)is used to assign IP addresses to devices on a network.
In this case, DHCP would be used to assign the reserved IP address 10.10.10.200 to a web server.
* DNS (Domain Name System)is used to translate domain names into IP addresses. Therefore, to translate companypro.net to an IP address, DNS would be utilized.
* ICMP (Internet Control Message Protocol)is used for sending error messages and operational
* information indicating success or failure when communicating with another IP address. An example of this is using the ping command to check if a server is responding to network connections.
These protocols are essential for the smooth operation of networks and the internet.
* Perform a query to translate companypro.net to an IP address.
* DNS (Domain Name System): DNS is used to resolve domain names to IP addresses.
* Assign the reserved IP address 10.10.10.200 to a web server at your company.
* DHCP (Dynamic Host Configuration Protocol): DHCP is used to assign IP addresses to devices on a network.
* Perform a ping to ensure that a server is responding to network connections.
* ICMP (Internet Control Message Protocol): ICMP is used by network devices to send error messages and operational information, and it is the protocol used by the ping command.
* DNS (Domain Name System): DNS translates human-friendly domain names like "companypro.net" into IP addresses that computers use to identify each other on the network.
* DHCP (Dynamic Host Configuration Protocol): DHCP automatically assigns IP addresses to devices on a network, ensuring that no two devices have the same IP address.
* ICMP (Internet Control Message Protocol): ICMP is used for diagnostic or control purposes, and the ping command uses ICMP to test the reachability of a host on an IP network.
References:
* DNS Basics: What is DNS?
* DHCP Overview: What is DHCP?
* ICMP and Ping: Understanding ICMP
質問 # 32
AAA サービス セキュリティ モデルのどのコンポーネントが ID 検証を提供しますか?
- A. 会計
- B. 監査
- C. 認証
- D. 承認
正解：C
解説：
The AAA service security model consists of three components: Authentication, Authorization, and Accounting.
*Authentication: This is the process of verifying the identity of a user or device. It ensures that only legitimate users can access the network or service.
*Authorization: This determines what an authenticated user is allowed to do or access within the network.
*Auditing/Accounting: This component tracks the actions of the user, including what resources they access and what changes they make.
Thus, the correct answer is C. Authentication.
References :=
*Cisco AAA Overview
*Understanding AAA (Authentication, Authorization, and Accounting)
質問 # 33
ユーザーは、外部 Web ページが読み込まれていないというトラブル チケットを発行します。内部と外部の他のリソースにはまだアクセスできると判断されます。
外部 Web ページへのネットワーク パスのどこに問題があるのかを特定するには、どのコマンドを使用できますか?
- A. nslookup
- B. トレース
- C. ipconfig/all
- D. ping -t
正解：B
解説：
The tracert command is used to determine the route taken by packets across an IP network. When a user reports that an external web page is not loading, while other resources are accessible, it suggests there might be an issue at a certain point in the network path to the specific web page. The tracert command helps to diagnose where the breakdown occurs by displaying a list of routers that the packets pass through on their way to the destination. It can identify the network segment where the packets stop progressing, which is valuable for pinpointing where the connectivity issue lies. References := Cisco CCST Networking Certification FAQs - CISCONET Training Solutions, Command Prompt (CMD): 10 network-related commands you should know, Network Troubleshooting Commands Guide: Windows, Mac & Linux - Comparitech, How to Use the Traceroute and Ping Commands to Troubleshoot Network, Network Troubleshooting Techniques: Ping, Traceroute, PathPing.
*tracert Command: This command is used to determine the path packets take to reach a destination. It lists all the hops (routers) along the way and can help identify where the delay or failure occurs.
*ping -t: This command sends continuous ping requests and is useful for determining if a host is reachable but does not provide path information.
*ipconfig /all: This command displays all current TCP/IP network configuration values and can be used to verify network settings but not to trace a network path.
*nslookup: This command queries the DNS to obtain domain name or IP address mapping, useful for DNS issues but not for tracing network paths.
References:
*Microsoft tracert Command: tracert Command Guide
*Troubleshooting Network Issues with tracert: Network Troubleshooting Guide
質問 # 34
各プロトコルを左側のリストから右側の正しい TCP/IP モデル レイヤーに移動します。
注意: 正解ごとに部分的な得点が与えられます。
正解：
解説：
Explanation:
Here's how each protocol aligns with the correct TCP/IP model layer:
* TCP (Transmission Control Protocol): This protocol belongs to theTransportlayer, which is responsible for providing communication between applications on different hosts1.
* IP (Internet Protocol): IP is part of theInternetworklayer, which is tasked with routing packets across network boundaries to their destination1.
* FTP (File Transfer Protocol): FTP operates at theApplicationlayer, which supports application and end-user processes.It is used for transferring files over the network1.
* Ethernet: While not a protocol within the TCP/IP stack, Ethernet is associated with theNetwork Interfacelayer, which corresponds to the link layer of the TCP/IP model and is responsible for the physical transmission of data1.
The TCP/IP model layers are designed to work collaboratively to transmit data from one layer to another, with each layer having specific protocols that perform functions necessary for the data transmission process1.
* TCP:
* TCP Model Layer: Transport
* Explanation: The Transport layer is responsible for end-to-end communication and error handling. TCP (Transmission Control Protocol) operates at this layer to provide reliable, ordered, and error-checked delivery of data.
* IP:
* TCP Model Layer: Internetwork
* Explanation: The Internetwork layer, also known as the Internet layer, is responsible for logical addressing and routing. IP (Internet Protocol) operates at this layer to route packets across networks.
* FTP:
* TCP Model Layer: Application
* Explanation: The Application layer provides network services to applications. FTP (File Transfer Protocol) operates at this layer to transfer files between computers over a network.
* Ethernet:
* TCP Model Layer: Network
* Explanation: The Network layer, also known as the Link layer in the TCP/IP model, is responsible for physical addressing and access to the physical medium. Ethernet operates at this layer to provide the physical and data link functions.
* Transport Layer: This layer is responsible for providing communication services directly to the application processes running on different hosts. TCP is a core protocol in this layer.
* Internetwork Layer: This layer is responsible for logical addressing, routing, and packet forwarding.
IP is the primary protocol for this layer.
* Application Layer: This layer interfaces directly with application processes and provides common network services. FTP is an example of a protocol operating in this layer.
* Network Layer: In the TCP/IP model, this layer includes both the data link and physical layers of the OSI model. Ethernet is a protocol used in this layer to define network standards and communication protocols at the data link and physical levels.
References:
* TCP/IP Model Overview: Cisco TCP/IP Model
* Understanding the TCP/IP Model: TCP/IP Layers
質問 # 35
新しい Cisco スイッチを購入し、電源を入れてコンソール ポートに接続します。次に、次のコマンドを実行します。
出力に関する各ステートメントに対して、True または False を選択します。
注意: 正しい選択ごとに部分的なポイントが付与されます。
正解：
解説：
Explanation:
* The two interfaces are administratively shut down:
* False: The output does not show any "shutdown" command under the interfaces, which would indicate that they are administratively shut down. Therefore, they are likely in their default state, which is administratively up.
* The two interfaces have default IP addresses assigned:
* False: The output does not show any IP address configuration. In the default state, interfaces do not have IP addresses assigned unless explicitly configured.
* The two interfaces can communicate over Layer 2:
* True: By default, interfaces on a switch are Layer 2 interfaces capable of forwarding Ethernet frames. As there is no configuration provided that changes this, it can be assumed they can communicate over Layer 2.
* Interface Status: The absence of the "shutdown" command means the interfaces are not administratively shut down.
* IP Address Assignment: There is no evidence in the output that IP addresses have been assigned to the interfaces, which would typically be shown as "ip address" entries.
* Layer 2 Communication: Switch interfaces in their default state operate at Layer 2, enabling them to forward Ethernet frames and participate in Layer 2 communication.
References:
* Cisco IOS Interface Configuration: Cisco Interface Configuration
* Understanding Cisco Switch Interfaces: Cisco Switch Interfaces
質問 # 36
各クラウド コンピューティング サービス モデルを左側のリストから右側の正しい例に移動します。注: 正解ごとに部分的なポイントが付与されます。
正解：
解説：
Explanation:
* Three virtual machines are connected by a virtual network in the cloud.
* Model: IaaS (Infrastructure as a Service)
* Explanation: IaaS provides virtualized computing resources over the internet, including virtual machines, storage, and networks.
* Users access a web-based graphics design application in the cloud for a monthly fee.
* Model: SaaS (Software as a Service)
* Explanation: SaaS delivers software applications over the internet, typically on a subscription basis, accessible via a web browser.
* A company develops applications using cloud-based resources and tools.
* Model: PaaS (Platform as a Service)
* Explanation: PaaS provides a platform allowing customers to develop, run, and manage applications without dealing with the infrastructure.
* IaaS (Infrastructure as a Service): Provides virtualized hardware resources that customers can use to build their own computing environments.
* PaaS (Platform as a Service): Offers a platform with tools and services to develop, test, and deploy applications.
* SaaS (Software as a Service): Delivers fully functional applications over the internet that users can access and use without managing the underlying infrastructure.
References:
* Cloud Service Models: Understanding IaaS, PaaS, SaaS
* NIST Definition of Cloud Computing:NIST Cloud Computing
質問 # 37
セキュリティ オプションを左側のリストから右側の特性に移動します。各セキュリティ オプションは、1 回、複数回、またはまったく使用しないこともできます。
注意: 正解ごとに部分的な得点が与えられます。
正解：
解説：
Explanation:
The correct matching of the security options to their characteristics is as follows:
* WPA2-Enterprise: Uses a RADIUS server for authentication
* WEP: Uses a minimum of 40 bits for encryption
* WPA2-Personal: Uses AES and a pre-shared key for authentication
Here's why each security option matches the characteristic:
* WPA2-Enterpriseuses a RADIUS server for authentication, which provides centralized Authentication, Authorization, and Accounting (AAA) management for users who connect and use a network service.
* WEP (Wired Equivalent Privacy)is an outdated security protocol that uses a minimum of 40 bits for encryption (and up to 104 bits), which is relatively weak by today's standards.
* WPA2-Personal(Wi-Fi Protected Access 2 - Personal) uses the Advanced Encryption Standard (AES) for encryption and a pre-shared key (PSK) for authentication, which is shared among users to access the network.
These security options are essential for protecting wireless networks from unauthorized access and ensuring data privacy.
質問 # 38
サポート チケットを最初に作成するときに含めるべき 2 つの情報はどれですか? (2 つ選択してください)
- A. 障害を解決するために実行されたアクション
- B. 障害の詳細な説明
- C. トップダウンの障害検出手順の説明
- D. 障害が発生したときの条件の説明
- E. ネットワークに接続されているコンピュータの詳細
正解：B、D
解説：
* Statement A: "A detailed description of the fault." This is essential for support staff to understand the nature of the problem and begin troubleshooting effectively.
* Statement C: "A description of the conditions when the fault occurs." This helps in reproducing the issue and identifying patterns that might indicate the cause of the fault.
* Statement B: "Details about the computers connected to the network." While useful, this is not as immediately critical as understanding the fault itself and the conditions under which it occurs.
* Statement D: "The actions taken to resolve the fault." This is important but typically follows the initial report.
* Statement E: "The description of the top-down fault-finding procedure." This is more of a troubleshooting methodology than information typically included in an initial support ticket.
References:
* Best Practices for Submitting Support Tickets: Support Ticket Guidelines
質問 # 39
Wi-Fi ネットワークの仕様はどの規格に含まれていますか?
- A. GSM
- B. EIA/TIA 568A
- C. IEEE 802.11
- D. IEEE 802.3
- E. LTE
正解：C
解説：
The IEEE 802.11 standard contains the specifications for Wi-Fi networks. It is a set of media access control (MAC) and physical layer (PHY) specifications for implementing wireless local area network (WLAN) computer communication in various frequencies, including but not limited to 2.4 GHz, 5 GHz, and 6 GHz1.
This standard is maintained by the Institute of Electrical and Electronics Engineers (IEEE) and is commonly referred to as Wi-Fi. The standard has evolved over time to include several amendments that improve speed, range, and reliability of wireless networks.
References :=
*The Most Common Wi-Fi Standards and Types, Explained
*802.11 Standards Explained: 802.11ax, 802.11ac, 802.11b/g/n, 802.11a
*Wi-Fi Standards Explained - GeeksforGeeks
質問 # 40
ホストには IP アドレス 172.16.100.25 とサブネット マスク 255.255.252.0 が割り当てられます。
このアドレスの CIDR 表記は何ですか?
- A. 172.16.100.25 /20
- B. 172.16.100.25 /23
- C. 172.16.100.25 /21
- D. 172.16.100.25 /22
正解：D
解説：
The CIDR (Classless Inter-Domain Routing) notation for the subnet mask 255.255.252.0 is /22. This notation indicates that the first 22 bits of the IP address are used for network identification, and the remaining bits are used for host addresses within the network1.
References :=
*Subnet Cheat Sheet - 24 Subnet Mask, 30, 26, 27, 29, and other IP Address CIDR Network References
*Subnet Mask to CIDR Notation: The given subnet mask is 255.255.252.0. To convert this to CIDR notation:
*Convert the subnet mask to binary: 11111111.11111111.11111100.00000000
*Count the number of consecutive 1s in the binary form: There are 22 ones.
*Therefore, the CIDR notation is /22.
References:
*Understanding Subnetting and CIDR: Cisco CIDR Guide
質問 # 41
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