究極のガイド準備220-1101認証試験A+は2024年更新
リアル220-1101問題集でCompTIA正確なアンサーは最新問題は2024年更新
質問 # 24
A company uses legacy accounting software, and no replacement is available. Which of the following virtualization solutions will the company MOST likely select?
- A. Network
- B. Sandbox
- C. Desktop
- D. Storage
正解：B
解説：
A sandbox is a virtualization solution that allows a legacy application to run in an isolated environment without affecting other applications or systems. A sandbox can emulate an older operating system or hardware configuration that is compatible with the legacy software. A hybrid cloud is a combination of public and private cloud services that share data and resources. Infrastructure as a service is a cloud computing model that provides servers, storage, networking, and software over the internet. Public cloud is a cloud computing model that provides services and resources to anyone over the internet. Private cloud is a cloud computing model that provides services and resources to a specific organization or group over a private network.
質問 # 25
A user reports that a computer will not turn on. The technician verifies the power cord and the outlet the computer are plugged into are both working properly. Which of the following is the hardware component that has MOST likely failed?
- A. GPU
- B. PSU
- C. CPU
- D. RAM
正解：B
解説：
The power supply unit (PSU) is the component that converts AC power from the outlet to DC power for the computer. If the PSU fails, the computer will not turn on. The CPU, RAM, and GPU are not directly related to the power supply and would not prevent the computer from turning on.
質問 # 26
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. AAA
- B. DNS
- C. DHCP
- D. ARP
正解：B
解説：
Explanation
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 # 27
An office manager reports that a printer is experiencing performance issues. Printouts are smudging when they are handled, and. recently, whenever the manager tries to print oversized documents, the paper jams before anything is printed on it.
正解：
解説：
質問 # 28
A technician who works in a high-security environment needs to set up a laptop with triple monitors for a new security employee. All USB ports are disabled due to security policies. Which of the following should the technician do to BEST meet the requirements?
- A. Implement a docking station.
- B. Install a discrete graphics card.
- C. Install a splitter cable
- D. use an HDMI switch.
正解：A
解説：
Explanation
This is because a docking station can connect multiple monitors to a laptop without using USB ports, which are disabled in this scenario. A splitter cable would only allow two monitors to be connected, not three. A discrete graphics card would require opening the laptop and installing hardware, which may not be feasible or allowed in a high-security environment. An HDMI switch would only allow one monitor to be active at a time, not all three simultaneously.
質問 # 29
A technician is preparing a redesigned conference room for a presentation. The presenter connects a laptop to the LCD projector, but a "No input source" error message is displayed on the LCD projector's screen.
However, the presentation is working on the laptop's LCD screen when in mirroring mode on the docking station. Which of the following troubleshooting steps should the technician take first?
- A. Reboot the laptop.
- B. Check the physical cabling.
- C. Replace the LCD projector.
- D. Update the display drivers.
正解：B
解説：
Explanation
One of the possible causes of the error message "No input source" is that the LCD projector is not receiving any signal from the connected device, such as a laptop1. This could be due to a loose or faulty cable or connector, or an incorrect input source selected on the projector2. Therefore, the first troubleshooting step that the technician should take is to check the physical cabling and make sure it is properly connected and secured12.
質問 # 30
A technician is replacing the motherboard of a workstation for a user who runs multiple large applications at the same time. Which of the following motherboard specifications would provide the most significant improvement in performance?
- A. Number of HDMI ports
- B. Number of DIMM slots
- C. Number of USB ports
- D. Number of PCI slots
正解：B
解説：
Explanation
The correct answer is A. Number of DIMM slots.
The number of DIMM slots on a motherboard determines how much RAM can be installed on the system.
RAM is a crucial component for running multiple large applications at the same time, as it allows the CPU to access data faster and avoid swapping to the hard drive. Having more DIMM slots means that more RAM can be added, which can improve the performance and responsiveness of the system.
B: Number of HDMI ports. This is not a correct answer. The number of HDMI ports on a motherboard determines how many monitors can be connected to the system. HDMI ports are used for video and audio output, but they do not affect the performance of the system when running multiple large applications.
C: Number of PCI slots. This is not a correct answer. The number of PCI slots on a motherboard determines how many expansion cards can be installed on the system. PCI slots are used for adding devices such as sound cards, network cards, or graphics cards, but they do not affect the performance of the system when running multiple large applications.
D: Number of USB ports. This is not a correct answer. The number of USB ports on a motherboard determines how many peripherals can be connected to the system. USB ports are used for connecting devices such as keyboards, mice, printers, or external drives, but they do not affect the performance of the system when running multiple large applications.
Reference: Best motherboards 2022: the best motherboards for Intel and AMD - TechRadar1.
質問 # 31
A company wants to use client-side visualization for application testing. Which of the following configurations would BEST support this goal?
A)
B)
D)
- A. Option D
- B. Option A
- C. Option C
- D. Option B
正解：B
質問 # 32
A user contacts the help desk in reference to a failing thumbprint scanner. The user states the scanner was functioning correctly yesterday. Which of the following troubleshooting steps should be performed FIRST after the ticket has been filed?
- A. File a damage report.
- B. Attempt to clean the scanner.
- C. Requisition a new scanner.
- D. Inquire about possible changes.
正解：B
質問 # 33
An end user reports that the time and date on a desktop resets after shutdown, and subsequently, the device reboots. The next day, the desktop does not load the OS and is stuck at a black screen with the following message:
Which of the following would be the BEST action to take next?
- A. Replace the CMOS battery.
- B. Reseat the motherboard power connections.
- C. Restore the BIOS to factory default settings.
- D. Change the motherboard.
正解：A
質問 # 34
A virtual file server in the cloud is configured to automatically add compute resources during times of high load on the server. Which of the following describes this cloud feature?
- A. File synchronization
- B. Shared resources
- C. Rapid elasticity
- D. High availability
正解：C
解説：
Explanation
Rapid elasticity is a cloud feature that allows cloud services to scale up or down automatically according to demand or load on the server, without requiring manual intervention or configuration changes by users or administrators.This enables cloud services to provide optimal performance and efficiency at all times, as well as reducing costs by only using resources when needed. Reference:
https://www.comptia.org/training/books/a-core-1-220-1101-study-guide (page 98)
質問 # 35
A technician is configuring a new CAD workstation that has four large hard drives. The workstation will be used to edit large, critical files, so the storage configuration should be both fast and redundant. Which of the following RAID levels BEST meets these requirements?
- A. 0
- B. 1
- C. 2
- D. 3
正解：A
質問 # 36
Which of the following is the SAFEST way to replace RAM on a server that has a redundant power supply?
- A. Replace the RAM while the server is running.
- B. Verify the RAM temperature.
- C. Utilize a grounding strap.
- D. Unplug one power cable.
正解：C
解説：
Utilizing a grounding strap is the safest way to replace RAM on a server that has a redundant power supply. This ensures that no static electricity is transferred to any of the server components, which could cause permanent damage. The other options are not the correct methods for replacing RAM. Unplugging one power cable is not recommended, as it could cause the server to go offline and disrupt any services that are running. Verifying the RAM temperature is not necessary and does not provide any additional safety measures, and replacing the RAM while the server is running is not recommended, as it could cause system instability.
質問 # 37
A new employee has been issued a company laptop. The employee requests an accessory with a single power source that has wired network connectivity and supports a keyboard, mouse, speakers, and dual monitors. Which of the following accessories should the systems administrator deploy to BEST meet the new user's needs?
- A. PoE switch
- B. Docking station with DisplayPort
- C. KVM switch with audio
- D. USB-C hub with power delivery
正解：C
解説：
KVM switch. KVM stands for "keyboard, video, mouse," and allows you to control multiple computers from a single keyboard, mouse, and monitor. These switches are often used to manage racked servers where a number of servers are placed in a single rack.
質問 # 38
Which of the following 802.11 standards supports both 5GHz and 2.4GHz channel frequencies?
- A. 802.11g
- B. 802.11b
- C. 802.11a
- D. 802.11ac
正解：D
解説：
Explanation
802.11ac is the 802.11 standard that supports both 5GHz and 2.4GHz channel frequencies. 802.11ac is the latest wireless networking standard that operates in both the 5GHz and 2.4GHz frequency bands. It provides higher wireless network speeds and better reliability compared to previous standards, such as 802.11a,
802.11b, and 802.11g. The 802.11a standard operates exclusively in the 5GHz band, while the 802.11b and
802.11g standards operate exclusively in the 2.4GHz band.
質問 # 39
A help desk technician thinks a desktop PC has failed due to a defective power supply. Which of the following steps should the technician take NEXT?
- A. Establish a plan of action to resolve the problem and implement the solution.
- B. Conduct external or internal research based on symptoms.
- C. Inquire about environmental or infrastructure changes.
- D. Document the findings, actions, and outcomes.
正解：A
解説：
Explanation
Once the technician has determined that the power supply is likely to be defective, they should establish a plan of action to resolve the problem. This may include replacing the power supply or further testing to confirm that it is indeed defective. After establishing a plan of action, the technician should implement the solution and verify that it has resolved the issue.
質問 # 40
A developer is requesting permission to utilize client-side visualization. The developer would like to write code in a setting isolated from other infrastructure to avoid negative impacts of experimental code. Which of the following provides the BEST solution for the developer?
- A. Software compatibility
- B. Sandbox environment
- C. Test case development
- D. Cross-platform functionality
正解：B
質問 # 41
A user's laptop is experiencing severe slowdowns when operating process-intensive tasks. Which of the following memory upgrades is compatible with a laptop?
- A. Virtual RAM
- B. SODIMM
- C. ECC RAM
- D. DIMM
正解：B
解説：
SODIMM stands for Small Outline Dual In-line Memory Module and is a type of memory module that is compatible with laptops and other small devices. SODIMMs are smaller and thinner than DIMMs (Dual In-line Memory Modules), which are typically used for desktop PCs and servers. Upgrading or adding SODIMMs can increase the amount of RAM available for a laptop, which can improve its performance and speed when running process-intensive tasks. Reference: https://partners.comptia.org/docs/default-source/resources/a-core-series-combined-content-guide (page 24)
質問 # 42
A company laptop uses a docking station with an integrated NIC and is unable to access a wired SOHO network using DHCP. A technician runs ipconfig anddiscovers the laptop has an IPv4 assignment of
169.254.0.9. The NIC does not have any link or activity lights on. Which of the following should the technician do next?
- A. Reset the network adapter.
- B. Replace the laptop.
- C. Restart the laptop in safe mode.
- D. Reseat the laptop in the docking station.
- E. Reboot the DHCP server.
正解：D
解説：
Explanation
The most likely answer is E. Reseat the laptop in the docking station.
The IPv4 address of 169.254.0.9 indicates that the laptop is using an Automatic Private IP Address (APIPA), which means that it could not obtain a valid IP address from the DHCP server on the network1. This could be caused by a physical or logical problem with the network adapter, the cable, the docking station, or the network itself2.
One of the possible solutions is to reseat the laptop in the docking station, which means to remove it and insert it again, making sure that it is properly aligned and connected. This can help fix any loose or faulty connections between the laptop and the docking station, and between the docking station and the network cable3. Reseating the laptop can also trigger a new DHCP request and renew the IP address4.
Other possible solutions include resetting the network adapter, replacing the network cable, rebooting the DHCP server, or restarting the laptop in safe mode. However, these are less likely to be effective than reseating the laptop, as they involve more steps and may not address the root cause of the problem234.
Replacing the laptop is an extreme and unnecessary measure, as there is no evidence that the laptop itself is faulty.
質問 # 43
Users report that all copies produced on a copter have a solid black line, but printing is unaffected. Which of the following is the MOST likely cause?
- A. A scratch on the scanning bed
- B. Bad output tray
- C. Failing imaging drum
- D. Damaged (user
正解：A
解説：
Explanation
A scratch on the scanning bed of a copier can cause a solid black line to appear on all copies, as the scanner cannot read the original document properly through the scratch. The scratch can also reflect light and create noise in the scanned image. The printing function is unaffected by the scratch, as it does not use the scanning bed. The technician should inspect and clean the scanning bed, and replace it if necessary. Reference:
https://partners.comptia.org/docs/default-source/resources/a-core-1-content-guide (page 16)
質問 # 44
A technician recently discovered me root cause of an application error that several users have been experiencing. The technician updated the configurations on the affected machines and verified full functionality was restored for all users, which of the following actions should the technician perform NEXT?
- A. Send an email communication to the company about the issue and the steps taken to resolve it.
- B. Submit a bug report to the developer of the application, along with the steps taken to resolve the Issue.
- C. Write a knowledge base article in the ticketing software to expedite future Incidents.
- D. Work with the developer to proactively collect the application logs to identify future errors of this type.
正解：C
解説：
Explanation
CompTIA 6-Step Troubleshooting Process:
1. Identify the problem.
2. Establish a theory of probably cause. (Question the obvious)
3. Test the theory to determine cause.
4. Establish a plan of action to resolve the problem and implement the solution.
5. Verify full system functionality and if applicable implement preventative measures.
6. Document findings, actions, and outcomes.
質問 # 45
A video game developer is requesting a new desktop computer with eight sticks of memory. The developer wants the desktop computer to take advantage of all available memory bandwidth without sacrificing performance. Which of the following would be the BEST solution?
- A. Triple-channel with DDR5 ECC RAM
- B. Quad-channel with DDR4 RAM
- C. Quad-channel with DDR5 SODIMM
- D. Dual-channel with DDR4 RAM
正解：B
解説：
Quad-channel memory architecture allows the CPU to access four memory modules simultaneously, increasing the memory bandwidth and performance. DDR4 RAM is a type of memory that has higher speed and lower power consumption than DDR3. SODIMM is a smaller form factor of memory that is typically used in laptops, not desktops. ECC RAM is a type of memory that can detect and correct errors, but it is more expensive and slower than non-ECC RAM. Triple-channel memory architecture is less common and less efficient than quad-channel. Reference: https://www.comptia.org/certifications/a#examdetails https://www.comptia.org/blog/what-is-ddr4-ram https://www.comptia.org/blog/what-is-quad-channel-memory
質問 # 46
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