最新 [2023年12月07日] リアルCompTIA 220-1101試験問題集解答
220-1101問題集を使って一日でA+試験合格（最新の494解答)
質問 # 180
Which of the following devices would a punchdown tool most likely be utilized on?
- A. Cable modem
- B. Managed switch
- C. POE injector
- D. Patch panel
正解：D
解説：
Explanation
A patch panel is a device that connects multiple network cables in an organized and convenient way. A patch panel has a number of ports that correspond to different cables, such as Ethernet, coaxial, or fiber-optic cables.
A patch panel can help simplify the wiring and management of a network, as well as provide flexibility and scalability for adding or changing network devices.
A punchdown tool is a tool that can be used to terminate network cables into a patch panel. A punchdown tool has a blade that cuts and pushes the wires into the slots or contacts of the patch panel. A punchdown tool can help create a secure and reliable connection between the network cables and the patch panel.
質問 # 181
Which of the following is a method that can be used to securely connect a remote user's laptop to a corporate server?
- A. VPN
- B. SSL
- C. WAN
- D. DHCP
正解：A
質問 # 182
A technician needs to install RAM into a rackmount server that will be used as a VM host. Which of the following would be BEST to install?
- A. SODIMM
- B. DDR4
- C. ECC
- D. VRAM
正解：C
解説：
When installing RAM into a server that will be used as a VM host, it is recommended to install ECC (Error-Correcting Code) RAM to help prevent errors that can cause virtual machines to crash. Reference: https://www.servermonkey.com/blog/ecc-vs-non-ecc-ram-what-are-the-differences.html When installing RAM into a rackmount server that will be used as a VM host, it would be best to install ECC (Error Correcting Code) RAM which can detect and correct common types of data corruption.
質問 # 183
A technician logs on to a PC and inserts an encrypted USB drive. When opening File Explorer, the technician cannot see the USB drive. Which of the following tools should the technician use to see all drives?
- A. BitLocker
- B. DiskPart
- C. Diskmgmt
- D. Disk Cleanup
正解：C
解説：
Explanation
The tool that the technician should use to see all drives is Diskmgmt. Diskmgmt is a Windows utility that allows you to manage disk drives and partitions on your computer. It can be used to view all drives, including USB drives, that are connected to the computer12.
質問 # 184
Which of the following is used to define a range of IP addresses available to assign using DHCP?
- A. Lease
- B. Address
- C. Scope
- D. Reservation
正解：C
解説：
Explanation
A scope is a term used to define a range of IP addresses available to assign using DHCP. DHCP stands for Dynamic Host Configuration Protocol, and it is a protocol that automatically assigns IP addresses and other network configuration parameters to devices on a network. A scope defines the start and end IP addresses, as well as other options, such as subnet mask, default gateway, and DNS servers.
質問 # 185
A user receives the following error when trying to reboot a computer:
Which of the following is the MOST likely cause of this error message?
- A. Incorrect storage device driver
- B. Faulty RAID controller
- C. Failed hard drive
- D. Corrupted bootloader
正解：C
解説：
Explanation
The error message "Reboot and Select Proper Boot Device" indicates that the computer cannot find the boot device that contains the operating system . This can happen if the hard drive that stores the operating system is damaged or failed, and the BIOS cannot detect it or read from it . A failed hard drive can also cause other symptoms such as clicking noises, corrupted files, or slow performance
質問 # 186
Which of the following is an unsecure remote access protocol?
- A. SFTP
- B. Telnet
- C. SSH
- D. HTTPS
正解：B
解説：
Telnet is an unsecure remote access protocol that allows a user to connect to a remote device and execute commands on it12. Telnet does not encrypt the data that is transmitted between the user and the device, which means that anyone who intercepts the network traffic can read the information, including usernames and passwords12. Telnet also does not authenticate the user or the device, which means that anyone can impersonate either party and gain unauthorized access1.
質問 # 187
A user takes a tablet to a technician because the cursor on it keeps drifting. The technician notices the screen does not appear to be damaged. Which of the following is the MOST likely cause of the cursor issue?
- A. The screen rotation is incorrect.
- B. The screen is physically damaged.
- C. The screen needs to be recalibrated.
- D. The touch-pen battery is depleted.
正解：C
解説：
Explanation
The most likely cause of the cursor issue is that the screen needs to be recalibrated. This can happen when the tablet is used for a long time or when the tablet is dropped or bumped. Recalibrating the screen will help the tablet recognize the touch input more accurately12.
質問 # 188
A user on a SOHO network is unable to watch online videos, even at 240 pixels. The technician runs ipconfig from the user's computer and records the following:
The technician then connects a test laptop to the router via the user's Cat 5 cable and records the following information:
Which of the following is MOST likely causing the user's issue?
- A. Faulty NIC
- B. Bad network cable
- C. Misconfigured default gateway
- D. Incorrect IP address
正解：B
質問 # 189
The GPS on a user's phone has been unreliable. Which of the following will MOST likely resolve the issue?
- A. Disabling Wi-Fi connections
- B. Enabling high-accuracy mode
- C. Replacing the battery
- D. Utilizing a third-party map application
正解：B
解説：
Enabling high-accuracy mode is the most likely action to resolve the issue of unreliable GPS on a user's phone. High-accuracy mode uses multiple sources of location data, such as Wi-Fi, cellular networks, and Bluetooth, to improve the accuracy and reliability of GPS. Replacing the battery, disabling Wi-Fi connections, or utilizing a third-party map application are unlikely to fix the GPS issue, as they are not directly related to the GPS function
質問 # 190
Which of the following 802.11 Wi-Fi protocols utilizes the 5.0GHz frequency and has the BEST speed and reception?
- A. 802.11 ax
- B. 802.11b/g/n
- C. 802.11a
- D. 802.11n
正解：A
解説：
Explanation
802.11 ax is a wireless networking protocol that utilizes the 5.0GHz frequency and has the best speed and reception among the options given. 802.11 ax offers higher data rates, lower latency, increased capacity, and improved power efficiency than previous protocols. It is also known as Wi-Fi 6 or High Efficiency Wireless (HEW). 802.11a also uses the 5.0GHz frequency, but it is an older protocol that has lower speed and reception than 802.11 ax. 802.11b/g/n use the 2.4GHz frequency, which is more crowded and prone to interference than the 5.0GHz frequency. 802.11n can use both frequencies, but it is also slower and less efficient than 802.11 ax.
Reference: https://www.comptia.org/training/books/a-core-1-220-1101-study-guide (page 82)
質問 # 191
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 # 192
Which of the following 802.11 Wi-Fi protocols utilizes the 5.0GHz frequency and has the BEST speed and reception?
- A. 802.11 ax
- B. 802.11b/g/n
- C. 802.11a
- D. 802.11n
正解：A
解説：
802.11 ax is a wireless networking protocol that utilizes the 5.0GHz frequency and has the best speed and reception among the options given. 802.11 ax offers higher data rates, lower latency, increased capacity, and improved power efficiency than previous protocols. It is also known as Wi-Fi 6 or High Efficiency Wireless (HEW). 802.11a also uses the 5.0GHz frequency, but it is an older protocol that has lower speed and reception than 802.11 ax. 802.11b/g/n use the 2.4GHz frequency, which is more crowded and prone to interference than the 5.0GHz frequency. 802.11n can use both frequencies, but it is also slower and less efficient than 802.11 ax. Reference: https://www.comptia.org/training/books/a-core-1-220-1101-study-guide (page 82)
質問 # 193
A small ISP has hired a new technician Joe, the new technician, is being trained to configure customers* home networks The trailing instructor gives me technician a starter kit with cables, cable ends, and other network equipment and asks mm to build a working network.
The computer should be connected to have internet connectivity and the phone should be connected to have a dial tone.
INSTRUCTIONS
Use the appropriate cables. cable ends, tools and equipment to configure the network ana connect an components accordingly There are 3 steps and the simulation starts on step 1.
正解：
解説：
Answer of both steps below.
質問 # 194
A technician is selling up a projector (or a videoconferencing system. When the user all empts 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 display settings on the computer and set them to extend/duplicate.
- B. Check the bulb on the projector and replace it with a new one.
- C. Replace the video card on the machine that is plugged in to the projector, as it has gone bad.
- D. Replace the projector with another known-good one and try again.
正解：A
解説：
Explanation
If a user is unable to connect a laptop to a projector or videoconferencing system and sees the error message
"No source found," the next step should be to check the display settings on the computer and set them to extend/duplicate. This will ensure that the laptop's display is being output to the external device. References:
CompTIA A+ Certification Exam Guide, pg. 514
質問 # 195
Which of the following cloud models allows an organization to retain data on site as well as in the cloud?
- A. Hybrid
- B. Private
- C. Public
- D. Community
正解：A
解説：
Explanation
The correct answer is C. Hybrid.
A hybrid cloud model is a combination of two or more different cloud models, such as public, private, community, or on-premises. A hybrid cloud model allows an organization to retain data on site as well as in the cloud, depending on the security and performance requirements of the data. A hybrid cloud model can also provide flexibility, scalability, and cost-efficiency for the organization12.
A public cloud model is a cloud service that is available to anyone over the internet. A public cloud model does not allow an organization to retain data on site, as the data is stored and managed by a third-party provider. A public cloud model can offer lower costs, higher availability, and easier access, but it may have less security and control over the data12.
A community cloud model is a cloud service that is shared by a group of organizations that have similar needs or goals. A community cloud model does not allow an organization to retain data on site, as the data is stored and managed by a third-party provider or one of the participating organizations. A community cloud model can offer higher security, privacy, and compliance, but it may have higher costs and lower availability than a public cloud model12.
A private cloud model is a cloud service that is exclusively used by a single organization. A private cloud model can allow an organization to retain data on site or in the cloud, depending on the configuration of the private cloud. A private cloud model can offer higher security, control, and customization, but it may have higher costs and lower scalability than a public cloud model12.
質問 # 196
A network engineer recently deployed a new application server in a cloud environment. Which of the following should be implemented to prevent a single point of failure within the system?
- A. Shared resources
- B. RAID
- C. Rapid elasticity
- D. High availability
正解：D
解説：
High availability is a design principle that ensures a system or service can operate continuously without significant downtime or disruption. High availability can be achieved by implementing redundancy, failover, load balancing, and backup strategies. High availability can prevent a single point of failure within the system, which means that if one component fails, another one can take over its function. Rapid elasticity is the ability to scale up or down the resources of a system according to the demand, but it does not prevent a single point of failure. RAID is a method of storing data across multiple disks to provide redundancy and performance, but it does not prevent a single point of failure at the server level. Shared resources are the resources that are pooled and accessed by multiple users or systems, but they do not prevent a single point of failure either. Reference: https://www.comptia.org/blog/what-is-cloud-computing
質問 # 197
Which of the following wireless technologies has the MOST range and wireless throughput?
- A. 802.11g
- B. 802. 11b/gin
- C. 802.11ax
- D. 802.11ac
正解：C
解説：
802.11ax, also known as Wi-Fi 6, has the longest range and the highest wireless throughput of all the wireless technologies listed. Reference: CompTIA A+ Certification Exam Guide, 220-1001, Chapter 3
質問 # 198
Which of the following describes the operational difference between hubs and switches when transmitting data to a specific computer inside the network?
- A. Switches only send data to the specific computer, while hubs send data to all computers inside the network.
- B. Switches receive data and route it to all computers inside the network while hubs receive data and do not route
- C. Switches scramble data, while hubs send data in the original form.
- D. Switches compress data while hubs send uncompressed data
正解：A
解説：
Switches only send data to the specific computer, while hubs send data to all computers inside the network. Reference: CompTIA A+ Certification Exam Guide, Exam 220-1001, Page 323
質問 # 199
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220-1101試験正確な問題集で学習ノートと理論：https://www.goshiken.com/CompTIA/220-1101-mondaishu.html
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