[2025年04月01日] トップクラスの220-1101練習試験問題
実際問題を使って220-1101無料問題集サンプル問題と練習テストエンジン
質問 # 157
A technician is setting up a video-editing workstation and the operating system is already installed on an internal M.2 drive.
The new workstation must meet the following requirements:
* Be able to edit files at the fastest speed
* Allow for disk failure without any downtime
* Have 2TB of usable space
* Ensure the most robust fault tolerance
INSTRUCTIONS
Use the drop-down menus to select the appropriate RAID level, drive types, and drive sizes based on the requirements above. For each drive type that is selected, a corresponding drive size must also be selected.
正解：
解説：
Explanation:
Based on the requirements, the best option for the video-editing workstation is to use RAID 10 with four SATA SSDs of 1TB each. This configuration will meet the following requirements:
* Be able to edit files at the fastest speed: RAID 10 combines the advantages of RAID 0 and RAID 1, which are striping and mirroring, respectively. Striping can increase the data transfer rate by using multiple disks in parallel, while mirroring can provide redundancy and reliability by duplicating the data on another set of disks. SATA SSDs are also faster than HDDs or SSHDs, as they use flash memory instead of spinning disks, and they can offer lower latency, higher IOPS, and less noise and heat.
* Allow for disk failure without any downtime: RAID 10 can withstand up to two disk failures, as long as they are not in the same mirrored pair. If one disk fails, the data can be read from or written to the other disk in the same pair, without affecting the performance or availability of the array. The failed disk can be replaced and rebuilt without interrupting the operation of the workstation.
* Have 2TB of usable space: RAID 10 uses half of the total disk capacity for mirroring, so the usable space is equal to the size of two disks. By using four SATA SSDs of 1TB each, the total disk capacity is
4TB, and the usable space is 2TB, which meets the requirement.
* Ensure the most robust fault tolerance: RAID 10 offers the highest level of fault tolerance among the standard RAID levels, as it can survive multiple disk failures and provide fast recovery. RAID 10 also has a low overhead, as it does not use parity or checksums, which can slow down the write performance or increase the complexity of the array.
Therefore, the technician should select the following options from the drop-down menus:
* RAID level: RAID 10
* Drive type 1: SATA SSD
* Drive size 1: 1TB
* Drive type 2: SATA SSD
* Drive size 2: 1TB
* Drive type 3: SATA SSD
* Drive size 3: 1TB
* Drive type 4: SATA SSD
* Drive size 4: 1TB
* Drive type 5: SATA SSD
* Drive size 5: 1TB
質問 # 158
A technician is configuring the router for a small business network. Which of the following settings should the technician configure first?
- A. VPN
- B. DHCP
- C. UPnP
- D. MAC filtering
正解：B
解説：
When configuring a router for a small business, the first setting a technician should configure is DHCP (Dynamic Host Configuration Protocol). DHCP is responsible for automatically assigning IP addresses to devices on the network, which is essential for enabling communication within the network. Without DHCP, devices would not receive the necessary IP configurations to communicate effectively.
質問 # 159
Which of the following twisted pair cables supports 10GBASE-T data transmission speed?
- A. Cat 6a
- B. Cat 5
- C. Cat 3
- D. Cat 5e
正解：A
解説：
Explanation
The correct answer is D. Cat 6a.
Cat 6a (augmented) is a type of twisted pair cable that supports 10GBASE-T data transmission speed.
10GBASE-T is an Ethernet standard that can deliver 10 gigabits per second (Gbps) over copper cables. Cat 6a can support this speed up to a distance of 100 meters, which is the same as Cat 5e and Cat 6 for lower speeds.
Cat 6a has better shielding and crosstalk prevention than Cat 6, which makes it more suitable for high-frequency signals.
Cat 3, Cat 5, and Cat 5e are not capable of supporting 10GBASE-T data transmission speed. Cat 3 can only support up to 10 Mbps, Cat 5 can only support up to 100 Mbps, and Cat 5e can only support up to 1 Gbps.
These cables have lower bandwidth, higher attenuation, and more interference than Cat 6a.
Reference: Network Cables - CompTIA A+ 220-1101 - 3.1 - Professor Messer IT Certification Training Courses
質問 # 160
A technician set up a new access point and has noticed significant latency on the selected channel. Which of the following tools can assist with locating the BEST channel to use?
- A. Network tap
- B. Wi-Fi analyzer
- C. Netstat
- D. Net use
- E. Traceroute
正解：B
解説：
Explanation
A Wi-Fi analyzer is a tool that can be used to scan the local area for available wireless networks and can provide information such as signal strength, interference, and available channels. It can also be used to locate the best channel to use for a given access point, which can help to reduce latency and improve performance.
質問 # 161
A user reports that a laptop correctly connects to the internet when docked at the office but is unable to access the internet when at home. Which of the following should the technician do first?
- A. Give the user a dock to use at home.
- B. Contact the user's home ISP
- C. Enable the wireless adapter.
- D. Disable network security settings.
正解：C
解説：
A wireless adapter is a device that allows a laptop to connect to a wireless network, such as a home Wi-Fi router. A wireless adapter can be either internal or external, and it can be enabled or disabled by the user or the operating system. If the wireless adapter is disabled, the laptop will not be able to access the internet when it is not connected to a wired network, such as the office dock.
The technician should do the following steps to enable the wireless adapter:
Check the physical switch or button on the laptop that controls the wireless adapter. Some laptops have a switch or button on the side, front, or keyboard that can turn on or off the wireless adapter. Make sure the switch or button is in the on position.
Check the software settings for the wireless adapter. In Windows 10, you can do this by clicking on the network icon in the system tray, and then clicking on the Wi-Fi icon. Make sure the Wi-Fi is turned on. You can also go to Settings > Network & Internet > Wi-Fi and make sure the Wi-Fi is turned on.
Check the device manager for the wireless adapter. In Windows 10, you can do this by right-clicking on the Start menu and selecting Device Manager. Expand the Network adapters category and look for your wireless adapter. Make sure it is enabled and has no errors. You can right-click on it and select Enable device or Update driver if needed.
If none of these steps work, there may be a hardware or software problem with the wireless adapter that requires further troubleshooting or replacement.
質問 # 162
When a user touches or swipes across an external touch screen, the image flickers but no input is registered on the presentation laptop. Atechnician verifies that the external touch screen appears free from physical damage.
Which of the following should the technician do next?
- A. Replace the laptop with a new device that is known to work.
- B. Check the cables connecting to the laptop.
- C. Reboot the LCD touch panel and laptop.
- D. Inspect the LCD touch panel for dead pixels or burn-in.
- E. Verify the correct input source is set on the laptop.
正解：B
解説：
When an external touch screen exhibits flickering without registering input on a presentation laptop, the first troubleshooting step should be to check the cables connecting the touch screen to the laptop. This includes ensuring that the cables are securely connected, undamaged, and are the correct type for transmitting both video and touch input data. Faulty, loose, or incorrect cabling can lead to issues like flickering and unregistered inputs.
References:
* CompTIA A+ Core 1 (220-1101) Exam Objectives, particularly the sections dealing with peripheral devices and troubleshooting connectivity and performance issues related to external devices like touch screens.
* Basic troubleshooting principles for peripheral devices, emphasizing the importance of verifying physical connections and cable integrity when encountering issues with device functionality.
質問 # 163
An online retailer would like to add capacity to support increased sales. Additional servers have been installed.
Which of the following should be used to ensure each new server is being properly utilized?
- A. Load balancer
- B. Clustering
- C. Virtualization
- D. Round-robin DNS
正解：A
解説：
Explanation
https://www.resonatenetworks.com/2020/04/29/clustering-vs-load-balancing-whats-the-difference/ A load balancer distributes network traffic evenly across multiple servers, ensuring each server is being properly utilized. This helps to prevent overloading of any individual server, which can cause downtime or slow response times for users. In this scenario, adding a load balancer would be the best way to ensure the new servers are being properly utilized. References: CompTIA A+ Certification Exam: Core 1 - Page 181
質問 # 164
Which of the following is a characteristic of cloud computing that prioritizes reliability?
- A. High availability
- B. Rapid elasticity
- C. Shared resources
- D. Hybrid
正解：A
解説：
Explanation
High availability is a characteristic of cloud computing that prioritizes reliability. High availability means that cloud services can be accessed without interruption or failure, even in the event of a disaster or a hardware malfunction. This is achieved by using redundant components, backup systems, load balancing, and failover mechanisms. According to the CompTIA Core1 objectives, one of the benefits of cloud computing is high availability. A research paper on cloud reliability also defines high availability as the ability to provide continuous service despite faults or failures.
質問 # 165
An organization is looking to upgrade the processing ability for its computers. Most users report that whenever multiple applications are being utilized, the system's response time slows down drastically. When only one application is open, the response time is acceptable.
Which of the following should be upgraded FIRST?
- A. HDD
- B. CPU
- C. RAM
- D. SSD
正解：C
解説：
RAM, or random-access memory, allows users to run several programs simultaneously. Simple tasks, such as opening a word document, use RAM. Applications such as Microsoft Word and Excel require large amounts of memory, along with graphic-filled web pages. Many users run multiple programs at once, but don't realize that this coupled with insufficient RAM may cause their computer to lag. A RAM upgrade is a simple and cost-effective solution that could improve functioning speed.
質問 # 166
A network administrator was notified that laptop users are unable to access or ping any network resources on the corporate network. Which of the following should the network administrator check FIRST?
- A. DNS
- B. ARP
- C. AAA
- D. DHCP
正解：A
解説：
Domain Name System (DNS) is an Internet service that translates domain names (e.g., its.umich.edu) into IP addresses. Dynamic Host Configuration Protocol (DHCP) is a protocol for automatically assigning IP addresses and other configurations to devices when they connect to a network.
質問 # 167
A technician is setting up a projector for a videoconferencing system. When the user attempts to connect a laptop to the system, the system displays the following error message:
no source found
The user tries multiple cables and inputs on the projector Which of the following should the user try next?
- A. Check the bulb the projector and replace it with a new one.
- B. Replace the video card on the machine that is plugged in to tie projector. as it has gone bad.
- C. Check the display settings on the computer and set them to extend/duplicate.
- D. Replace the projector another known-good one and try again.
正解：C
解説：
Explanation
The user should check the display settings on the computer and set them to extend/duplicate. This will allow the computer to send the video signal to both the laptop screen and the projector. If the display settings are set to only show on one screen, then the projector may not detect any source. According to the CompTIA Core1 objectives, one of the common display issues is no image on screen. A troubleshooting guide for projectors also suggests checking the display settings as a possible solution for no source found error.
質問 # 168
A technician is troubleshooting an unresponsive touchscreen on a smartphone. The technician performs a hard reset, but the touchscreen remains unresponsive. Which of the following is the most likely cause of the issue?
- A. Missing drivers
- B. Low battery
- C. Damaged digitizer
- D. Virus infection
正解：C
解説：
The digitizer is a crucial component of a touchscreen device, responsible for translating touch actions into digital signals that the device can interpret. If a hard reset does not resolve the touchscreen's unresponsiveness, it's likely that the digitizer is damaged. Physical damage, such as cracks or heavy impacts, can impair the digitizer's ability to function correctly, leading to an unresponsive touchscreen. This type of hardware issue requires professional repair or replacement of the touchscreen assembly to restore functionality.
質問 # 169
Laura, a customer, has instructed you to configure her home office wireless access point.
She plans to use the wireless network for finances and has requested that the network be setup with the highest encryption possible.
Additionally, Laura knows that her neighbors have wireless networks and wants to ensure that her network is not being interfered with by the other networks.
She requests that the default settings be changed to the following.
Wireless Name: HomeWiFi
Shared Key: CompTIA
Router Password: Secure$1
Finally, Laura wants to ensure that only her laptop and Smartphone can connect to the network.
Laptop: IP Address 192.168.1.100
Hardware Address: 00:0A:BF:03:C4:54
Smartphone: IP Address 192.168.1.101
Hardware Address: 09:2C:D0:22:3F:11
INSTRUCTIONS
Configure Laura's wireless network using the network adapter window.
If at any time you would like to bring back the initial state of the situation, please click the Reset All button.
正解：
解説：
See the explanation below
Explanation
solution as
質問 # 170
A user requested upgrades to a company-issued laptop to increase its performance while working with a large database stored on drive C. Which of the following tasks should a systems administrator complete to BEST meet this goal? (Select TWO).
- A. Increase the RAM.
- B. Install a hybrid drive.
- C. Upgrade to 1GB NIC.
- D. Configure RAID 1.
- E. Migrate to a SSD.
- F. Upgrade the power supply.
正解：A、E
解説：
To increase the performance of a laptop working with a large database stored on drive C, a systems administrator should increase the RAM and migrate to an SSD. Increasing the RAM will help the laptop to better handle the large database, while migrating to an SSD will improve the speed at which the laptop can access the database. Configuring RAID 1, installing a hybrid drive, upgrading to a 1GB NIC, and upgrading the power supply will not directly improve the laptop's performance when working with a large database.
References: CompTIA A+ Certification Exam: Core 1 - Objective 3.1
質問 # 171
Which of the following virtualization technologies allows Linux and Windows operating systems to run concurrently?
- A. Cross-platform
- B. Test environment
- C. Legacy OS
- D. Sandbox
正解：A
解説：
Cross-platform virtualization technologies allow different operating systems to run concurrently on the same hardware. This means that both Linux and Windows operating systems can run simultaneously using a cross-platform virtualization solution.
質問 # 172
A systems administrator is attempting to resolve a ticket regarding an issue with an email server. The administrator is covering for a coworker who was previously working on the ticket. The coworker already gathered facts about the issue and spoke with users concerning their missing emails. The coworker also discovered the email server's retention policy was updated shortly before users first noticed the issue. Which of the following should the systems administrator do NEXT to resolve the email issue?
- A. Establish a theory of probable cause for the email server issue.
- B. Escalate the ticket to a higher level to resolve the email server issue.
- C. Create a plan of action to resolve the email server issue.
- D. Test a theory to determine the cause of the email server issue.
正解：A
解説：
Before attempting to resolve the issue, it is important to first determine the cause or probable cause of the issue, so that a plan of action can be developed. In this case, the fact that the retention policy was updated shortly before users first noticed the issue suggests that this could be the cause of the issue. The systems administrator should investigate this further to determine if this is indeed the cause of the email server issue.
質問 # 173
A remote user reports connectivity issues with the local internet provider. Even after a technician reboots the modem supplied by the ISP. the issue persists. Which of the following would BEST establish the connection in minimal time?
- A. Neighbor's Wi-Fi
- B. Mobile hotspot
- C. Radio frequency ISP
- D. Fiber optic
正解：B
質問 # 174
A user's laptop has been slow to respond for the past few days. The user has run a virus scan, deleted temporary files, closed unnecessary programs, and rebooted the laptop, but the issue persists. Which of the following steps should the technician take next?
- A. Replace the laptop's hard drive.
- B. Run a firmware update.
- C. Bench test the laptop.
- D. Perform a RAM upgrade.
正解：C
解説：
Bench testing involves running diagnostics and performance tests on the laptop to identify potential hardware or software issues that may be contributing to the slow performance.
質問 # 175
An organization maintains various record types, including health and criminal justice records. Which of the following cloud environments is the organization MOST likely to use to limit the attack surface?
- A. Public
- B. Community
- C. Private
- D. Hybrid
正解：C
解説：
Private cloud environments are designed for use by a single organization and offer the greatest control over security and access to data. They are typically used for sensitive or confidential data, such as health and criminal justice records. Public cloud environments are shared by multiple organizations and offer less control over security and access to data. Hybrid cloud environments combine public and private clouds, while community clouds are shared by multiple organizations with similar needs. References: CompTIA A+ Certification Exam: Core 1 - Page 234
質問 # 176
A customer reports a problem connecting to network resources. After asking open-ended questions, the technician determines the issue likely exists on the remote server. Which of the following should the technician do next?
- A. Document the findings.
- B. Test the theory
- C. Establish a plan of action
- D. Gather information
正解：B
解説：
After determining the issue is likely on the remote server, the technician should test the theory to confirm the root cause before proceeding.
* Why Not A (Document the findings): Documentation comes after confirming the issue.
* Why Not C (Gather information): Information gathering is already completed.
* Why Not D (Establish a plan of action): This is done after confirming the issue.
CompTIA A+ Exam Reference: Core 2 (220-1102), Section 3.1, troubleshooting methodology.
質問 # 177
A user is looking for a way to increase the total RAM in a system without upgrading the hardware. Which of the following should the user perform to complete this task?
- A. Set up virtual memory.
- B. Install hardware-tuning software.
- C. Run a burn-in application
- D. Create a VM.
正解：A
解説：
Virtual memory is a software-based memory management system that allows a computer to use hard disk storage space as RAM. This can be used to increase the total RAM in a system without upgrading the hardware. To set up virtual memory, the user should go to the System Properties window and select the Advanced tab. In the Performance section, click on the Settings button, which will open the Performance Options window. Then, click on the Advanced tab and click on the Change button in the Virtual memory section. Finally, select the option to Automatically manage paging file size for all drives, and then click OK to save the changes.
質問 # 178
A technician responds to a help desk ticket that indicates a user's workstation is not booting. The technician initially suspects a failed hard drive. The technician performs diagnostics and confirms the hard drive is fully operational.
Which of the following steps should the technician complete NEXT?
- A. Configure a new RAID array.
- B. Consider another possible cause of the issue.
- C. Reinstall the operating system.
- D. Report the status of the drive and close the ticket.
- E. Restore the latest backup of the system.
正解：E
解説：
Explanation
Since the hard drive appears to be functioning normally, the technician should investigate other potential causes of the issue. This could include checking the BIOS settings, verifying the connections to the hard drive, and testing the RAM. Once these steps have been completed, the technician can then take the necessary steps to resolve the issue.
質問 # 179
A user reports that a PC occasionally fails to start. The user restarts the PC, but the performance is degrading. The technician hears a strange repetitive ticking noise coming from the PC. Which of the following should the technician do first?
- A. Inspect the fan
- B. Check the CD tray
- C. Try to extract data
- D. Reseat the RAM modules
正解：C
解説：
The ticking noise likely indicates a failing hard drive. The technician should attempt to extract data before the drive fails completely.
質問 # 180
A company wants to use client-side visualization for application testing. Which of the following configurations would BEST support this goal?
A)
B)
C)
D)
- A. Option B
- B. Option C
- C. Option A
- D. Option D
正解：C
質問 # 181
A user needs to upgrade the power supply of an older workstation to properly power a new graphics card.
Which of the following criteria should the technician check to ensure the power supply will support the upgraded workstation? (Select two).
- A. Form factor
- B. Efficiency rating
- C. Fan type
- D. Modular cabling
- E. Heat dissipation
- F. Wattage
正解：A、F
解説：
The technician should check the wattage and the form factor of the power supply to ensure it will support the upgraded workstation. These are the two most important criteria for choosing a compatible and adequate power supply.
* Wattage: The wattage of a power supply is the maximum amount of power it can deliver to the components of the workstation. The wattage of the power supply should match or exceed the total power consumption of the components, especially the new graphics card, which is usually the most power-hungry part. If the power supply does not have enough wattage, it may cause instability, crashes, or damage to the workstation. To estimate the power consumption of the components, the technician can use a power supply calculator tool, such as the ones found in the web search results123. The technician should also add some headroom to the wattage, such as 20% to 50%, to account for peak power consumption, future upgrades, or power supply degradation.
* Form factor: The form factor of a power supply is the physical size and shape of the unit. The form factor of the power supply should fit in the case of the workstation and match the mounting holes and
* screws. The most common form factor for desktop power supplies is ATX, which measures 150 x 86 x
140 mm. However, some older or smaller workstations may use different form factors, such as SFX, TFX, or FlexATX. The technician should check the specifications of the workstation case and the power supply to ensure they have the same form factor.
Other criteria, such as efficiency rating, heat dissipation, fan type, and modular cabling, are not essential for supporting the upgraded workstation, but they may affect the performance, noise, or aesthetics of the power supply. The efficiency rating is the percentage of input power that is converted to output power, and it indicates how much power is wasted as heat. The heat dissipation is the ability of the power supply to cool itself and prevent overheating. The fan type is the design and size of the fan that cools the power supply, and it affects the noise level and airflow of the unit. The modular cabling is the feature that allows the user to detach unused cables from the power supply, and it helps to reduce clutter and improve airflow inside the case.
References:
* How to Choose the Right Power Supply for Your PC - Lifewire4
* How to Choose a Power Supply: 7 Steps (with Pictures) - wikiHow5
* How to pick the best PC power supply - PCWorld6
* Power Supply Calculator - PSU Wattage Calculator | Newegg1
* Power Supply Calculator | Cooler Master2
* Power Supply Calculator - PSU Calculator | OuterVision3
質問 # 182
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2025年最新の実際に出ると確認されたCompTIA 220-1101無料試験問題：https://drive.google.com/open?id=1Y0oDMlPThAN71D1vsjq0MyhVGzAbFUn0