試験合格保証付きのCCT Routing and Switching 100-490試験問題集
Cisco 100-490日常練習試験は2024年最新のに更新された74問あります
質問 # 20
Which command displays information about the carrier network, cell site, and available service?
- A. show cellular unit profile
- B. show cellular unit hardware
- C. show cellular unit radio
- D. show cellular unit network
正解：D
解説：
Section: Cisco IOS Software Operation
Explanation/Reference: https://www.cisco.com/c/en/us/td/docs/solutions/Verticals/EE/IG-WAN/EE-WAN-IG/EE-WAN- IGch2.html
質問 # 21
Which command provides detailed information about the components that are installed on a router, such as the model, PID, and serial number?
- A. show router
- B. show chassis
- C. show inventory
- D. show items
正解：C
解説：
Section: Cisco IOS Software Operation
質問 # 22
Cisco NX-OS has added the ability to use which type of custom scripting to help manage user networks?
- A. Python
- B. SQL
- C. C++
- D. Collective
正解：A
質問 # 23
Which command displays the configuration register setting?
- A. show version
- B. show flash
- C. show config-register
- D. show running-config
正解：A
解説：
The show version command on Cisco devices provides a variety of system information, including:
Cisco IOS version: The version of the Cisco IOS software running on the device.
Boot image: The location of the IOS image used during startup.
Hardware information: Model, processor type, memory details.
Interfaces: A list of the device's interfaces.
Configuration register: The current value of the configuration register, typically displayed near the end of the output.
Why other options are incorrect:
show flash: Displays the contents of flash memory, but not the configuration register.
show running-config: Displays the currently active configuration, but the configuration register setting is not directly part of the running configuration.
show config-register: This is not a standard Cisco IOS command.
質問 # 24
Which two IPv4 addresses are assigned to host computers? (Choose two.)
- A. 292.10.3.4
- B. 255.255.255.255
- C. 0.0.0.0
- D. 192.168.10.15
- E. 10.1.1.20
正解：D、E
解説：
In the context of IPv4 addresses, a host address is an identifier for a specific device on a network. The addresses 10.1.1.20 and 192.168.10.15 are both within ranges typically reserved for private networks, making them suitable for assignment to host computers within a local network. Address 292.10.3.4 is not a valid IPv4 address because the first octet is beyond the maximum value of 255. Address 255.255.255.255 is reserved for broadcast messages to all hosts on the local network, and 0.0.0.0 is used to denote an unspecified address, often indicating the absence of an IP address123. Reference := IP address, Network address, and Host address Explained, IP address - Wikipedia, Understanding IP Addresses: How IP Addressing Works | ENP
質問 # 25
Refer to the exhibit.
Which two statements about the hardware components are true? (Choose two.)
- A. 2 is an RJ-45 to USB Type A console cable.
- B. 1 is a USB Type A port.
- C. 3 is a USB Type A port.
- D. 2 is a USB 5-pin mini USB Type B to USB Type A console cable.
- E. 3 is a USB 5-pin mini USB Type B port.
正解：C、D
解説：
Reference:
https://www.cisco.com/c/en/us/td/docs/routers/access/2900/hardware/installation/guide/ Hardware_Installation_Guide/Install_Connect.html
質問 # 26
Which type of port on a laptop is used to connect to an Ethernet port on a Cisco switch?
- A. RJ-11
- B. DVI
- C. DB-9
- D. RJ-45
正解：D
解説：
RJ-45 is the standard connector used for Ethernet networks. Here's why it's the correct answer:
Compatibility: Ethernet ports on both laptops and Cisco switches use RJ-45 connectors. This makes RJ-45 cables ideal for direct connections between these devices.
Appearance: RJ-45 ports are rectangular and slightly larger than typical phone jacks (RJ-11). They have eight metal pins inside.
Why other options are incorrect:
DVI: DVI ports are used for video connections between computers and displays.
RJ-11: RJ-11 ports are primarily associated with analog phone lines and are smaller than RJ-45.
DB-9: DB-9 connectors were traditionally used for serial connections on older computers and peripherals.
質問 # 27
What is the line speed of a DS0 in North America?
- A. 128 kbps
- B. 16 kbps
- C. 32 kbps
- D. 64 kbps
正解：D
質問 # 28
Which Windows-based text editor is preferred for working with a simple text document, such as a Cisco configuration?
- A. Microsoft Word
- B. Microsoft Notepad
- C. Microsoft Access
- D. Microsoft Excel
正解：B
解説：
Microsoft Notepad is the preferred text editor for working with Cisco configuration files and other simple text documents for several reasons:
Plain Text Focus: Notepad is designed specifically for plain text editing. It does not add any formatting, hidden characters, or metadata that could interfere with the configuration file's structure.
Cisco Syntax Compatibility: Cisco configurations rely on specific syntax and spacing. Notepad preserves these elements accurately.
Universality: Notepad is a basic text editor included in all versions of Windows, ensuring accessibility and eliminating the need for additional software.
Why other options are not ideal:
Microsoft Word: Word is a word processor and includes formatting, fonts, and other features that are not compatible with Cisco configuration files. This formatting can corrupt the configuration.
Microsoft Access: Access is a database management system, not suited for text file editing.
Microsoft Excel: Excel is a spreadsheet application and adds its own structure and formatting that conflicts with configuration file formats.
質問 # 29
Which Cisco CPAK 100GBASE module supports Multimode Fiber cable?
- A. Cisco CPAK-100G-CWDM4
- B. Cisco CPAK-100G-LR4
- C. Cisco CPAK-100G-ER4L
- D. Cisco CPAK-100G-SR4
正解：D
解説：
Reference:
https://www.cisco.com/c/en/us/products/collateral/interfaces-modules/transceiver-modules/ data_sheet_c78-728110.html
質問 # 30
From a Windows command prompt, which command displays the local IP address of a computer?
- A. ip config
- B. ip configuration
- C. ipconfiguration
- D. ipconfig
正解：D
解説：
Section: Service-related Knowledge
質問 # 31
Which device is able to be configured as a TFTP server?
- A. CSU/DSU
- B. modem
- C. Cisco router
- D. Cisco Content Engine
正解：C
解説：
A Cisco router can be configured to act as a TFTP (Trivial File Transfer Protocol) server. TFTP is a simple protocol used to transfer files without the need for authentication. On a Cisco router, the tftp-server command is used to designate the router as a TFTP server, allowing it to manage file transfers to and from connected devices. This is particularly useful for tasks such as updating the router's firmware or backing up configuration files. Neither CSU/DSU, modem, nor Cisco Content Engine are typically used as TFTP servers. Reference := The ability to configure a Cisco router as a TFTP server is documented in Cisco's support forums and knowledge base articles
質問 # 32
Which layer of the OSI model defines how data is formatted for transmission and how access to the physical media is controlled?
- A. network
- B. presentation
- C. data link
- D. transport
正解：C
解説：
Reference:
https://itcertzone.wordpress.com/2011/01/24/the-seven-layers-of-the-osi-model/#:~:text=Layer% 202%3A%20The%20Data%20Link,reliable%20delivery%20of%20the%20data.
質問 # 33
Which command provides detailed information about the components that are installed on a router, such as the model, PID, and serial number?
- A. show router
- B. show chassis
- C. show inventory
- D. show items
正解：C
解説：
The show inventory command in Cisco IOS is designed specifically to display detailed hardware inventory information about a Cisco device. This includes:
Component Name: The name or type of each module or card installed.
PID (Product ID): The unique product identifier for the module.
VID (Version ID): The version identifier for the module.
Serial Number: The unique serial number assigned to the module.
Why other options are incorrect:
show chassis: Some Cisco devices support a show chassis command, but the information provided usually focuses on the physical chassis rather than detailed component inventory.
show items: This is not a standard Cisco IOS command.
show router: This command doesn't provide the level of granular hardware information that show inventory does.
質問 # 34
What is the primary method for recovering or upgrading a Cisco network device system image?
- A. USB storage
- B. the tftpdnld command
- C. FTP
- D. the xmodem command
正解：B
質問 # 35
What does Cisco use for Return Materials Authorization tracking of field-replaceable parts?
- A. FRU number
- B. RMA number
- C. product number
- D. serial number
正解：B
解説：
Section: Service-related Knowledge
質問 # 36
Which two pieces of information are displayed when you use the show ip interface brief command? (Choose two.)
- A. Layer 3 address
- B. keepalive
- C. encapsulation type
- D. interface status
- E. Layer 2 address
正解：A、D
質問 # 37
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Cisco 100-490試験では、ネットワークの基礎、LANスイッチングテクノロジー、ルーティングテクノロジー、WANテクノロジー、インフラストラクチャサービス、インフラストラクチャのメンテナンスなど、さまざまなトピックをカバーしています。候補者は、ネットワークトポロジ、プロトコル、アドレス指定スキームなどの基本的なネットワーク概念の理解を示す必要があります。また、OSPF、EIGRP、BGPなど、さまざまなCiscoルーティングプロトコルを構成およびトラブルシューティングする能力を示す必要があります。さらに、候補者は、VLAN、VLANトランキングプロトコル、およびスパニングツリープロトコル（STP）の知識を実証する必要があります。
Cisco 100-490試験は、グローバルに認められているベンダー固有の認定試験です。この認定は、個人のCisco技術における熟練度を示し、Ciscoルーティングおよびスイッチングネットワークデバイスのサポートにおけるスキルを検証します。この認定は業界で高く評価され、個人が複雑なネットワークデバイスと構成を扱うために十分に備えていることを示し、雇用主によって求められます。
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