[2025年11月] 無料100-140試験問題集試験点数を伸ばそう
2025年最新の100-140実際問題集には試験のコツがあるPDF試験材料
Cisco 100-140 認定試験の出題範囲：
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質問 # 279
What is a critical step a technician must take before starting a remote session with TeamViewer to ensure the security of the connection?
- A. Set the session to allow full control access by default for all TeamViewer sessions
- B. Ask the user to provide their TeamViewer password over the phone for quick access
- C. Ensure both the technician and the user are using the latest version of TeamViewer
- D. Use the same session ID for recurring support to simplify the user's experience
正解：C
解説：
Correct Answer. A. Ensure both the technician and the user are using the latest version of TeamViewer Ensuring that both parties are using the latest version of TeamViewer is essential for maintaining security, as updates often include patches for vulnerabilities that could be exploited during a remote session.
Option B is incorrect as sharing passwords over the phone can be insecure and violates basic security protocols.
Option C is incorrect because allowing full control by default can expose critical systems and data to unnecessary risks.
Option D is incorrect because using the same session ID repeatedly can compromise security, especially if the ID becomes known to unauthorized parties.
質問 # 280
During a video conference, a user's webcam suddenly stops transmitting video, though the microphone continues to work.
What is the most likely solution to this problem?
- A. Reboot the computer
- B. Check the webcam's video connection
- C. Adjust the video settings in the conferencing software
- D. Replace the webcam
正解：C
解説：
Correct Answer. A. Adjust the video settings in the conferencing software Often, issues with video transmission during a conference can be resolved by checking and adjusting the video settings within the application, especially if the audio is still functioning.
Option B is incorrect. While rebooting can resolve some issues, it's less targeted than checking settings if only the video transmission stopped.
Option C is incorrect. If the microphone works, the physical connection of the webcam is likely intact, as most webcams use a single USB connection for both video and audio.
Option D is incorrect. Replacing the webcam is premature without first troubleshooting software settings or connection issues.
質問 # 281
During a system audit, a technician needs to confirm that the local DNS server can resolve external domains for troubleshooting purposes.
What is the best command to use for this task?
- A. arp -a
- B. ping 8.8.8.8
- C. nslookup google.com 8.8.8.8
- D. nslookup google.com
正解：D
解説：
Correct Answer. B. nslookup google.com Using nslookup without specifying an external DNS server tests whether the local DNS server can resolve the external domain, which is crucial for validating the local DNS server's effectiveness.
Option A is incorrect. This tests Google's DNS, not the local DNS server.
Option C is incorrect. Pinging an IP address tests connectivity but does not verify DNS resolution capabilities.
Option D is incorrect. The ARP command displays the ARP table, which is unrelated to DNS resolution.
質問 # 282
A graphic design company wants to run the latest version of a high-end design software which is known to be resource-intensive. The IT department needs to ensure that workstations can handle the software efficiently.
What is the minimum amount of RAM should the workstations have?
- A. 16 GB of RAM
- B. 32 GB of RAM
- C. 4 GB of RAM
- D. 8 GB of RAM
正解：A
解説：
Correct Answer. C. 16 GB of RAM Given the resource-intensive nature of high-end graphic design software, workstations should have at least 16 GB of RAM to ensure smooth operation and efficient handling of multiple large files and applications simultaneously.
Option A is incorrect because 4 GB of RAM is insufficient for modern, high-end graphic design software, which may lead to poor performance and system instability.
Option B is incorrect because 8 GB of RAM may handle basic tasks but is likely to struggle with advanced features and multitasking in resource-intensive graphic design software.
Option D is incorrect because while 32 GB of RAM is beneficial for extremely high workloads, it exceeds the minimum requirement necessary for efficient operation of the software described.
質問 # 283
A user needs to connect a modern laptop with only USB-C ports to an older monitor that supports only VGA input.
Which type of converter should the IT support technician recommend?
- A. USB-C to VGA converter
- B. USB-C to HDMI converter
- C. USB-C to DisplayPort converter
- D. USB-C to DVI converter
正解：A
解説：
Correct Answer. B. USB-C to VGA converter A USB-C to VGA converter is the most appropriate choice for connecting a laptop with USB-C ports to an older monitor that only supports VGA input.
This converter will adapt the digital signal from the USB-C to the analog signal required by the VGA interface, ensuring compatibility between the devices.
Option A is incorrect because HDMI does not provide the analog output needed for a VGA-only monitor.
Option C is incorrect because DVI, like HDMI, primarily carries digital signals and would require additional conversion to analog for VGA compatibility.
Option D is incorrect because DisplayPort also primarily supports digital signals and would not interface directly with an older VGA monitor without additional conversion.
質問 # 284
A network administrator notices that the link light on a network interface card (NIC) is not lighting up when connected to the switch.
What does this most likely indicate?
- A. The NIC is functioning properly, but the switch is off
- B. The NIC is configured with the wrong IP address
- C. There is a physical connection issue or the NIC is malfunctioning
- D. The network cable is too long
正解：C
解説：
Correct Answer. B. There is a physical connection issue or the NIC is malfunctioning The absence of a link light typically indicates that there is no physical link due to either a connection issue, such as a faulty cable or port, or a malfunctioning NIC.
Option A is incorrect because even if the switch were off, the NIC might still show a link light if it had a valid connection before the switch was turned off.
Option C is incorrect because while cable length can affect signal quality, it would not typically prevent the link light from turning on altogether.
Option D is incorrect because IP address configuration errors do not affect the status of hardware indicators such as the link light.
質問 # 285
During an external audit, it was found that a critical service was accessible from the internet, posing a significant security risk.
What firewall action is most appropriate to remedy this issue?
- A. Increase the firewall's throughput capacity
- B. Implement specific firewall rules to block public access to the service
- C. Disable the firewall to reset all connections and re-enable it
- D. Configure the firewall to block all incoming and outgoing traffic
正解：B
解説：
Correct Answer. B. Implement specific firewall rules to block public access to the service Creating specific rules to restrict access to critical services from unauthorized networks, such as the internet, is essential for maintaining security without disrupting other services.
Option A is incorrect. Blocking all traffic would disrupt legitimate network operations and is not a practical solution.
Option C is incorrect. Increasing throughput does not address the issue of unauthorized access to services.
Option D is incorrect. Disabling and re-enabling the firewall would cause unnecessary disruption and does not solve the underlying configuration issue.
質問 # 286
A user needs to connect a portable hard drive to their laptop using a Micro USB cable but is concerned about the security of their data during transfer. What is a critical aspect the IT support technician should inform the user about regarding the use of Micro USB for data transfer?
- A. Physical security of the connection is important as Micro USB does not provide data encryption
- B. Micro USB 3.0 supports faster data transfer, which is more secure
- C. Micro USB connections automatically disable data transfer if any security threat is detected
- D. Micro USB cables provide encryption for data transfers
正解：A
解説：
Correct Answer. C. Physical security of the connection is important as Micro USB does not provide data encryption When transferring data via Micro USB, it's important to ensure physical security of the connection, as the cable and port do not offer built-in encryption for data. Users should ensure secure handling and avoid public or untrusted charging points when transferring sensitive data.
Option A is incorrect because Micro USB cables do not inherently provide encryption for data transfers; this is managed by the devices and software involved.
Option B is incorrect because while USB 3.0 can offer faster data transfers, speed does not equate to increased security.
Option D is incorrect because Micro USB connections do not have the capability to automatically detect and disable transfers under security threats.
質問 # 287
A user complains that their mobile device charges very slowly when connected to their computer via a USB cable.
What is the most likely explanation for this issue that the IT support technician should provide?
- A. The USB cable is silver-plated
- B. The mobile device requires a software update
- C. The USB cable is too thick
- D. The computer's USB port is USB 1.0, providing lower power output
正解：D
解説：
Correct Answer. A. The computer's USB port is USB 1.0, providing lower power output If a mobile device charges slowly when connected to a computer, the most likely cause is that the computer's USB port is an older version, such as USB 1.0, which provides less power compared to newer versions like USB 2.0 or 3.0. This lower power output results in slower charging.
Option B is incorrect because while software updates can affect charging efficiency, they are less likely to be the cause of slow charging when the charging source is identified as a potential issue.
Option C is incorrect because the thickness of the USB cable does not typically affect charging speed unless it is of poor quality or damaged.
Option D is incorrect because the plating of the USB cable connectors (like silver) does not impact the charging speed; it's more about the cable and port specifications.
質問 # 288
A user reports that their PC becomes unresponsive when they launch a certain application. What feature in the Task Manager should the IT support technician guide the user to utilize in order to prevent the application from running automatically at startup, potentially solving the unresponsiveness issue?
- A. Open the App history tab to clear usage history
- B. Use the Startup tab to disable the application from starting automatically
- C. Go to the Performance tab to monitor CPU usage
- D. Navigate to the Details tab and end the process
正解：B
解説：
Correct Answer. C. Use the Startup tab to disable the application from starting automatically The Startup tab in Task Manager allows users to manage the list of applications that start automatically when the computer boots. Disabling an application that causes unresponsiveness upon startup can help alleviate the issue without needing to manually close the program each time the system starts.
Option A is incorrect because ending the process in the Details tab is a temporary solution that stops the application only once; it does not prevent the application from starting automatically on the next boot.
Option B is incorrect because monitoring CPU usage in the Performance tab does not provide a solution to prevent the application from running.
Option D is incorrect because the App history tab shows historical data for Metro apps and does not include features to manage startup applications.
質問 # 289
During an office setup, a technician needs to ensure that all desktop computers are equipped with the correct power cables to handle a power load of up to 600 watts for high-performance tasks.
What specification should the technician look for when selecting these power cables?
- A. High amperage rating
- B. High flexibility material
- C. Fiber optic capability
- D. Low resistance coating
正解：A
解説：
Correct Answer. A. High amperage rating For desktop computers, particularly those requiring up to 600 watts for high-performance operations, the power cables must have a high amperage rating to safely handle the increased electrical current. Ensuring that the power cables are rated appropriately is crucial to prevent overheating and potential electrical hazards.
Option B is incorrect because while low resistance could theoretically improve efficiency, it's not a standard specification for selecting power cables for desktop computers.
Option C is incorrect because fiber optic capability relates to data transmission, not power cables.
Option D is incorrect because while flexibility can be important for cable management, it does not impact the cable's ability to handle specific power loads.
質問 # 290
What is phishing?
- A. Sending deceptive emails to obtain sensitive information
- B. Redirecting internet traffic to malicious sites
- C. Exploiting a vulnerability in software
- D. Infecting a system with a virus
正解：A
質問 # 291
While using remote access software to resolve a network connectivity issue, you find a related internal knowledge base article written over a year ago.
What is the best approach to using this information?
- A. Apply the solution from the article immediately since it directly addresses the issue
- B. Disregard the article as it is outdated and instead use a general internet search to find a solution
- C. Rewrite the article with your own understanding before applying any fix
- D. Verify if the article is still relevant and check for any updates before applying the solution
正解：D
解説：
Correct Answer. B. Verify if the article is still relevant and check for any updates before applying the solution Ensuring that the information is up-to-date and still applicable to the current system environment is crucial, as outdated guidance might no longer be effective or could potentially cause further issues.
Option A is incorrect. Directly applying an old solution without verification may not consider changes in the network environment or software updates.
Option C is incorrect. Disregarding potentially useful internal resources can lead to inconsistent support practices and reinventing the wheel.
Option D is incorrect. While updating information is valuable, it must be done with careful validation and not in the midst of solving an immediate issue.
質問 # 292
A user reports intermittent connectivity issues on their laptop when connected to the LAN, but stable connectivity on WLAN.
What diagnostic step should be prioritized to troubleshoot the wired connection?
- A. Replace the network router as it may be failing
- B. Inspect the laptop's Ethernet port and the wall socket for physical damage
- C. Check the laptop for malware that could be disrupting the network adapter
- D. Perform a system restore on the laptop
正解：B
解説：
Correct Answer. C. Inspect the laptop's Ethernet port and the wall socket for physical damage Intermittent issues in wired connections can often be due to physical damage to the ports or connectors, which would not affect WLAN connectivity.
Option A is incorrect. Malware could affect overall connectivity, but the issue described is specific to the LAN.
Option B is incorrect. Router failure would typically affect more than one device and not selectively impact LAN over WLAN.
Option D is incorrect. A
system restore is an extreme measure that does not specifically address connectivity issues unless a recent change is suspected to be the cause.
質問 # 293
What should a technician be aware of when relying on AI to diagnose software issues?
- A. AI can analyze and suggest solutions based on large data sets but may not understand context
- B. AI can replace traditional diagnostic tools entirely
- C. AI consistently outperforms human technicians in complex problem-solving scenarios
- D. AI eliminates the need for manual review of its suggested solutions
正解：A
解説：
Correct Answer. B. AI can analyze and suggest solutions based on large data sets but may not understand context While AI is powerful in handling large volumes of data to identify patterns and propose solutions, it may lack the ability to understand the specific context or nuances of a problem like a human technician would.
Option A is incorrect because AI should complement, not replace, traditional diagnostic tools.
Option C is incorrect as AI, while helpful, may not always outperform human insight in complex or novel problem-solving situations.
Option D is incorrect because manual review is essential to validate AI-generated solutions, ensuring they are applicable and correctly interpreted.
質問 # 294
A technician needs to replace a faulty power supply unit (PSU) inside a desktop computer. What safety procedure should be followed to minimize the risk of electrical shock?
- A. Wear rubber gloves and proceed to replace the PSU without unplugging the computer
- B. Spray the interior with compressed air while the computer is plugged in to remove dust before proceeding
- C. Ensure the computer is unplugged and press the power button to discharge any residual power
- D. Disconnect the PSU from the motherboard but leave the computer plugged in for grounding
正解：C
解説：
Correct Answer. B. Ensure the computer is unplugged and press the power button to discharge any residual power Unplugging the computer and pressing the power button to discharge any stored energy in capacitors minimizes the risk of electrical shock when replacing the power supply unit. This procedure ensures that no residual power is present that could cause an electrical shock.
Option A is incorrect because leaving the computer plugged in poses a risk of electrical shock.
Option C is incorrect as wearing rubber gloves does not eliminate the hazard of working on a powered device.
Option D is incorrect because using compressed air on a plugged-in computer does not adhere to safety standards and increases the risk of electrical discharge.
質問 # 295
A macOS user is experiencing issues with their Bluetooth connectivity and needs to verify their system's Bluetooth version to ensure compatibility with connected devices. Under which section in the System Settings should the IT support technician instruct the user to check this information?
- A. Accessibility
- B. Network
- C. General
- D. Bluetooth
正解：D
解説：
Correct Answer. B. Bluetooth The Bluetooth section in the System Settings is the correct place to find detailed information about the macOS device's Bluetooth capabilities, including the version.
This information helps users troubleshoot connectivity issues by verifying compatibility with other Bluetooth devices.
Option A is incorrect because the Network section focuses on settings for Wi-Fi, Ethernet, and other network connections, not Bluetooth specifics.
Option C is incorrect because the General section mainly deals with overall appearance settings, language, and text options.
Option D is incorrect because the Accessibility section is designed to adjust settings that help users with disabilities and does not cover Bluetooth settings.
質問 # 296
After updating their system, a user notices that their PC setup no longer goes into sleep mode when expected.
Which Windows tool should they use to identify what is preventing the system from sleeping?
- A. Device Manager
- B. Command Prompt using the powercfg -requests command
- C. Power troubleshooter
- D. Event Viewer
正解：B
解説：
Correct Answer. D. Command Prompt using the powercfg -requests command The powercfg - requests command displays which applications and drivers are preventing the system from going into sleep mode. This tool is useful for diagnosing power management issues following updates.
Option A is incorrect because Device Manager does not provide information on what prevents sleep mode Option B is incorrect although the Power troubleshooter can help resolve some power issues, it does not specifically list active power requests Option C is incorrect because while Event Viewer logs system events, it does not specifically list which processes prevent sleep mode
質問 # 297
During a support session, a macOS user needs assistance finding logs that detail when their applications last updated.
Which section of the Console app should the IT support technician guide the user to check?
- A. "System Diagnostics" to analyze comprehensive diagnostic reports
- B. "Crash Reports" to see logs of application crashes
- C. "Install Logs" to review the history of installed software updates
- D. "All Messages" to view all system logs.
正解：C
解説：
Correct Answer. C. "Install Logs" to review the history of installed software updates "Install Logs" in the Console app provides a specific view of logs related to software installations and updates on macOS. This is the best place to check for historical data on when applications were last updated, making it ideal for troubleshooting issues related to recent updates.
Option A is incorrect because "All Messages" would include all system logs, making it cumbersome for users to sift through unrelated entries to find update information.
Option B is incorrect because "Crash Reports" focuses solely on crashes and does not track regular software updates.
Option D is incorrect because "System Diagnostics" contains broad diagnostic information and is not tailored to logging software updates.
質問 # 298
A network administrator is troubleshooting an issue where an IPv6-enabled device cannot access certain external IPv6 addresses.
What command should the administrator use to identify where the packets are getting dropped?
- A. ping6 2001:db8:cafe::3
- B. traceroute6 2001:db8:cafe::3
- C. nslookup 2001:db8:cafe::3
- D. netstat -r6
正解：B
解説：
Correct Answer. A. traceroute6 2001:db8:cafe::3 traceroute6 is designed to show the path that packets take to a destination over an IPv6 network, making it ideal for identifying points where packets are dropped along the route.
Option B is incorrect. ping6 tests reachability but does not show the path or indicate where packets might be dropped.
Option C is incorrect. nslookup is used for querying the DNS to resolve names to IP addresses and is unrelated to path tracing.
Option D is incorrect. netstat -r6 displays the IPv6 routing table, which does not provide real-time tracing or diagnostics of packet travel.
質問 # 299
You are assisting an end user with a software configuration issue via remote access. You remember seeing a similar issue discussed in a technical forum.
What is the best way to leverage this information?
- A. Assume the same solution will work and apply it without further validation
- B. Quickly skim through the forum thread and apply the first solution you find
- C. Recommend that the end user read the forum themselves and decide on the action to take
- D. Carefully read through the relevant forum thread to understand the context and solutions provided
正解：D
解説：
Correct Answer. B. Carefully read through the relevant forum thread to understand the context and solutions provided Thoroughly understanding the context in which solutions were proposed ensures that the correct fix is applied and adjusts for any nuances specific to the user's configuration.
Option A is incorrect. Skimming and applying the first found solution can miss important details and lead to inappropriate actions.
Option C is incorrect. Applying a solution without validation can result in further complications if the contexts differ.
Option D is incorrect. Expecting the end user to determine the solution shifts technical responsibility and may overwhelm the user.
質問 # 300
Following a support call about an intermittent hardware failure, how should the technician document the interaction to ensure it is useful for both immediate review and future reference?
- A. Include a detailed technical description of the failure, tests conducted, and the outcome
- B. Focus on documenting the client's feedback and suggestions
- C. Provide a chronological account of the support call, including time stamps
- D. Record the names and titles of all personnel involved in the call
正解：A
解説：
Documenting the technical details of the hardware failure, the diagnostic tests performed, and the results of those tests ensures that the record is clear, factual, and comprehensive. This information is critical for reviewing the incident in the future and for any ongoing maintenance or follow-up required.
Option B is incorrect as while chronological details are useful, they do not emphasize the technical specifics necessary for comprehensive documentation.
Option C is incorrect because focusing primarily on client feedback does not provide a clear description of the technical issues and resolutions.
Option D is incorrect as listing the involved personnel does not summarize the technical details of the problem or its resolution.
質問 # 301
An employee reports that they can view content but cannot interact during a video conference on a collaboration platform.
What is the first step they should take to resolve this issue?
- A. Purchase a premium version of the software
- B. Reinstall the collaboration software immediately
- C. Check their user permissions within the collaboration tool
- D. Restart their computer
正解：C
解説：
Correct Answer. A. Check their user permissions within the collaboration tool Often, interaction issues in collaboration platforms can be due to user permissions that restrict certain actions during a conference.
Option B is incorrect because reinstalling the software should only be considered if simpler fixes, like checking settings or permissions, do not resolve the issue Option C is incorrect because purchasing a premium version without understanding the permission settings may not resolve the issue Option D is incorrect because restarting the computer does not address specific permission settings within the collaboration software
質問 # 302
An iPhone user is experiencing rapid battery drain after an iOS update. What is the most appropriate recommendation to address this issue?
- A. Roll back the iOS update
- B. Check for apps that may be draining the battery by reviewing battery usage in Settings
- C. Disable all location services
- D. Turn off the iPhone overnight
正解：B
解説：
Correct Answer. B. Check for apps that may be draining the battery by reviewing battery usage in Settings Reviewing battery usage in the iPhone's Settings can help identify specific apps or services that are consuming excessive battery power, particularly after an iOS update that may have changed app behaviors.
Option A is incorrect because rolling back iOS updates is not typically supported by Apple and not a recommended troubleshooting step.
Option C is incorrect as disabling all location services may unnecessarily limit functionality without addressing the underlying cause of the battery drain.
Option D is incorrect because turning off the iPhone overnight does not solve the problem of rapid battery drain during usage.
質問 # 303
During a business trip, a user needs to purchase a replacement charging cable for their mobile device.
What specification should the IT support technician advise the user to ensure compatibility with fast charging?
- A. Cable with built-in LED light
- B. High-amperage cable support
- C. USB-C compatibility
- D. Maximum cable length of 1 meter
正解：B
解説：
Correct Answer. D. High-amperage cable support For compatibility with fast charging, it's important that the replacement cable supports high amperage. This ensures that the cable can handle the increased power throughput required for fast charging capabilities, providing efficient and quick charging.
Option A is incorrect because USB-C compatibility is necessary for the connection type but does not directly relate to fast charging unless the device and charger also support it.
Option B is incorrect because while shorter cables can potentially charge more efficiently, the key factor for fast charging is the cable's ability to support high current (amperage).
Option C is incorrect because a built-in LED light is a convenience feature and has no impact on the cable's charging capabilities.
質問 # 304
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