無料提供される220-1201問題集と220-1201リアル試験問題
CompTIA 220-1201実際の問題とブレーン問題集
質問 # 330
A third-party contractor recently installed a new switch, router, and cabling for a small corporate office. After the installation, users started experiencing issues connecting to resources over the network.
INSTRUCTIONS
Click on each PC and server to review outputs. From the remediation section on the right, select an issue and solution for each device.
正解：
解説：
See the Explanation and detailed steps below.
Explanation:
Looking at the network configurations and outputs from both PCs and servers, here are the possible issues and solutions:
1. PC 1
Issue: The IP address for PC1 is 192.168.1.1, which conflicts with Server 1 (which also uses 192.168.1.1).
Solution: Change the IP address on PC1 to a unique one within the range, like 192.168.1.3.
2. PC 2
Issue: PC 2 is configured with 192.168.1.2, which conflicts with Server 2 that has the same IP address.
Solution: Update the IP address on PC 2 to something unique, like 192.168.1.4.
3. Server 1
Issue: The IP address for Server 1 is 192.168.1.1, which conflicts with PC1.
Solution: Since Server 1 and PC1 are using the same IP address, change one of them. For Server 1, you could change the IP address to 192.168.1.5.
4. Server 2
Issue: Server 2 is using the IP address 192.168.1.2, which conflicts with PC2.
Solution: Update Server 2 to use a different IP address, such as 192.168.1.6.
General Remediation:
The primary problem here is overlapping IP addresses, leading to connectivity issues. Each device on the network must have a unique IP address. After making these changes, ensure that all devices can communicate properly by testing the connection between devices and verifying they can access shared resources.
質問 # 331
Which of the following best describes the benefits of cloud computing in the context of business operations?
- A. It delivers on-premises data storage for sensitive information.
- B. It offers complete control over physical servers to the IT team.
- C. It provides elasticity, allowing businesses to scale resources up or down easily.
- D. It removes the need for software licenses for on-premises deployments.
正解：C
解説：
Cloud computing provides elasticity, enabling businesses to dynamically scale resources based on demand, which improves efficiency and cost management.
質問 # 332
Which of the following DNS records should a technician configure to allow domains that are not owned by the company to send messages on the company's behalf?
- A. DKIM
- B. SPF
- C. MX
- D. DMARC
- E. CNAME
正解：B
解説：
An SPF (Sender Policy Framework) record specifies which mail servers or domains are authorized to send emails on behalf of a domain. Configuring the SPF record to include third- party domains allows them to send messages legitimately for the company, helping prevent spoofing and unauthorized email use.
質問 # 333
A user reports that the office inkjet printer is making smudges on the printed pages. Which of the following tasks would best resolve the issue?
- A. Clear any jams.
- B. Replace the fuser.
- C. Clean the cartridge heads.
- D. Apply a maintenance kit.
正解：C
解説：
Smudging on inkjet prints is commonly caused by clogged or dirty print heads, which prevent proper ink application. Cleaning the cartridge heads restores proper ink flow and print quality.
質問 # 334
A technician is manually configuring network settings on a user's computer to route network traffic to a newly deployed firewall. Which of the following should the technician change?
- A. Subnet mask
- B. Gateway
- C. VPN
- D. VLAN
正解：B
解説：
Routing network traffic through a firewall requires changing the default gateway so the computer sends outbound traffic to the firewall as the next hop.
質問 # 335
A data center technician notices that one of the servers in a RAID 5 configuration is experiencing slow performance. A message in the server logs indicates a degraded RAID array. Which of the following actions should the technician take to address the degraded RAID array?
- A. Change the RAID configuration to RAID 6.
- B. Reseat all existing drives to improve connection.
- C. Perform a disk defragmentation on all drives.
- D. Replace the failed drive with a new one.
正解：D
解説：
A degraded RAID 5 array indicates that one drive has failed, and replacing the failed drive allows the array to rebuild redundancy and restore normal performance.
質問 # 336
A customer needs to install a new printer in their network. The customer reports that users had intermittent connectivity issues with previous printers. Which of the following should the technician configure on the new printer to prevent this issue?
- A. Public IP address
- B. Static IP address
- C. DHCP IP address
- D. Gateway IP address
正解：B
解説：
Intermittent connectivity issues with network printers are commonly caused by changing IP addresses when using DHCP. Assigning a static IP address ensures that the printer is always reachable at the same IP address by client machines.
質問 # 337
Which of the following supports the most devices due to its status as a legacy technology?
- A. 5GHz
- B. 2.4GHz
- C. NFC
- D. 6GHz
正解：B
解説：
The correct answer is A. 2.4GHz.
In the CompTIA A+ Core 1 220-1201 networking objectives, wireless networking technologies include frequency bands such as 2.4GHz, 5GHz, and 6GHz, along with related concepts like channels, regulations, channel selection, Bluetooth, 802.11 standards, NFC, and RFID.
The 2.4GHz band supports the most devices because it is the oldest and most widely adopted Wi-Fi frequency listed. Many legacy devices, including older laptops, printers, IoT devices, smart home devices, and wireless peripherals, still rely on 2.4GHz. It also has better range and wall penetration than higher-frequency bands, although it is usually more crowded and slower.
Why the other options are incorrect:
B). 5GHz
5GHz is newer than 2.4GHz and generally provides faster speeds with less interference, but it does not support as many older legacy devices.
C). 6GHz
6GHz is the newest Wi-Fi frequency option used with newer Wi-Fi standards, so it has the least legacy device support among the Wi-Fi frequency choices.
D). NFC
NFC is a short-range communication technology, not a Wi-Fi frequency band. It is used for close-proximity functions such as tap-to-pay, pairing, and access cards, so it is not the best answer.
質問 # 338
An IT support specialist needs to configure several laptops to access local resources wherever the employees are while in the office. Which of the following would best meet this requirement?
- A. Configure cellular location services to facilitate device identification.
- B. Create roaming profiles for each laptop.
- C. Enable Bluetooth connectivity in all laptops.
- D. Set up a Wi-Fi connection with a common SSID.
正解：D
解説：
Configuring a Wi-Fi network with a common SSID allows laptops to automatically connect to the same wireless network across different access points within the office, ensuring seamless access to local resources anywhere on the premises.
質問 # 339
Which of the following record types is used to create an alias for a domain?
- A. TXT
- B. A
- C. AAAA
- D. CNAME
正解：D
解説：
A CNAME (Canonical Name) record is used in DNS to create an alias that maps one domain name to another canonical domain name. According to CompTIA Core 1 (220-1201) DNS objectives, CNAME records allow multiple hostnames to reference the same IP address indirectly by pointing to a single authoritative domain name.
For example, www.example.com can be configured as a CNAME that points to example.com. When DNS queries are made, the resolver follows the alias until it reaches an A or AAAA record that contains the actual IP address.
An A record maps a hostname directly to an IPv4 address, while an AAAA record maps a hostname to an IPv6 address. A TXT record is used to store arbitrary text data, commonly for verification, email security (SPF, DKIM), or policy information, not for aliasing.
CompTIA stresses that CNAME records are specifically intended for aliasing and name redirection within DNS, making them the correct answer.
References:CompTIA A+ Core 1 (220-1201) Official Study Guide - DNS Record Types and Name Resolution
質問 # 340
A network printer does not release a user's final print job from the queue, but the user's other print jobs successfully printed a few moments before. Other users can print without issues. Which of the following should the user check first to solve the issue?
- A. If the print queue is full and will not allow additional jobs
- B. If the computer and printer are connected to the same network
- C. If the printer has stopped due to empty trays
- D. If the print job is configured to a tray or manual feed
正解：D
解説：
If only one print job fails and others succeed, it is often due to a paper type or tray selection mismatch for that specific job. If a print job is configured to use a tray that is empty or set to manual feed, it will not be released until resolved.
From CompTIA A+ 220-1101 Official Study Guide, Objective 4.3 - Printer troubleshooting:
"If a specific print job stalls while others succeed, check the job settings for specific tray or paper type configurations that do not match the printer's current setup." Verified Source:
* CompTIA A+ Core 1 (220-1101) Official Study Guide, Chapter 4: Printer Troubleshooting
* CompTIA Exam Objectives 220-1101, Domain 4.3
質問 # 341
Which of the following network services is used to assign an IP address to a network host?
- A. DNS
- B. LDAP
- C. SMTP
- D. DHCP
正解：D
解説：
DHCP (Dynamic Host Configuration Protocol) is the service used to automatically assign IP addresses to network hosts. It dynamically manages the distribution of IP addresses and configuration details (like subnet mask, gateway, and DNS servers), ensuring no two devices are assigned the same address on the network.
Option B (DNS): Incorrect. DNS translates domain names into IP addresses but does not assign them.
Option C (LDAP): Incorrect. LDAP is a protocol used for accessing and maintaining directory services, such as user information and permissions.
Option D (SMTP): Incorrect. SMTP is used for sending and receiving email, not for IP address assignment.
References:
CompTIA A+ Core 1 Objectives: 2.5 (Network configuration)
質問 # 342
Which of the following servers is used to collect data and information about events from a network-connected host?
- A. DNS
- B. Syslog
- C. Print
- D. Mail
正解：B
解説：
A Syslog server gathers and stores log messages and event data sent over the network from various hosts and devices, centralizing system and application logs for monitoring and analysis.
質問 # 343
A company is separating its accounting department's network from its customer service department's network.
Which of the following will accomplish this task?
- A. DNS
- B. DHCP
- C. VLAN
- D. VPN
正解：C
解説：
Comprehensive and Detailed Explanation From Exact Extract (Aligned With CompTIA A+ 220-1201 Study Guide) CompTIA networking fundamentals describe VLANs (Virtual Local Area Networks) as a method to segment network traffic logically, even while using the same physical switch hardware.
A VLAN allows a company to:
* Separate traffic by department
* Improve security
* Reduce broadcast domains
* Control inter-department access
To separate accounting and customer service networks, VLANs are the industry-standard and the CompTIA- approved method.
Why the other options are incorrect
A). VPN - Used for secure remote connections, not internal LAN segmentation.
B). DNS - Resolves hostnames to IPs, not used for network separation.
D). DHCP - Assigns IP addresses; does not isolate network groups.
質問 # 344
Each lime a user ties to print, the paper becomes stuck at the last stage of the print job and the user has to poll me paper out of the printer. Which of the following is me most likely cause?
- A. Printhead
- B. Tray assembly
- C. Rollers
- D. Toner
正解：C
解説：
If paper gets stuck at the last stage of printing, the rollers responsible for moving the paper through the printer are likely worn out or dirty.
Why Not B (Tray assembly): The tray assembly manages paper loading, not feeding during the print process.
Why Not C (Toner): Toner is unrelated to paper jams.
Why Not D (Printhead): Printheads manage ink/toner distribution, not paper movement.
CompTIA A+ Exam Reference: Core 2 (220-1102), Section 4.6, printer troubleshooting.
質問 # 345
Which of the following is an advantage of a display using mini LEDs for its backlight?
- A. Higher color gamut
- B. Reduced latency
- C. Increased dimming zones
- D. Faster refresh rate
正解：C
解説：
Mini LED technology uses thousands of tiny LEDs for the backlight, allowing for many more dimming zones. This results in improved contrast, deeper blacks, and better overall image quality compared to traditional LED backlighting.
質問 # 346
Which of the following should a technician use in DNS to map a device to an IPv6 address?
- A. MX
- B. AAAA
- C. A
- D. CNAME
正解：B
解説：
The correct DNS record used to map a device to an IPv6 address is the AAAA record. According to CompTIA Core 1 (220-1201) networking fundamentals, DNS uses different record types to associate domain names with specific resources, and each record type serves a distinct purpose.
An AAAA (Quad-A) record maps a fully qualified domain name (FQDN) to an IPv6 address, which is a
128-bit address written in hexadecimal format. As IPv6 adoption increases to address IPv4 exhaustion, CompTIA expects technicians to understand how DNS supports both addressing schemes.
An A record maps a hostname to an IPv4 address only and cannot be used for IPv6. A CNAME record creates an alias that points one domain name to another domain name, not directly to an IP address. An MX record is used for mail server routing and email delivery, not for host address resolution.
CompTIA emphasizes knowing DNS record types and their specific use cases, especially distinguishing between A vs. AAAA records when working with IPv4 and IPv6 networks. When the requirement is explicitly to map a device to an IPv6 address, the AAAA record is the correct and only valid choice.
References:CompTIA A+ Core 1 (220-1201) Official Study Guide - DNS Record Types, IPv6 Addressing, and Network Name Resolution
質問 # 347
A customer recently lost data due to several unexpected shutdowns. Data integrity is important to the customer. Which of the following features should the technician choose to prevent data loss?
- A. Uninterruptible power supply
- B. Modular power supply
- C. Redundant power supply
- D. High-efficiency power supply
正解：A
解説：
An uninterruptible power supply (UPS) protects systems against power outages by providing temporary backup power, giving users time to save data and safely shut down.
From CompTIA A+ 220-1101 Official Study Guide, Objective 3.3 - Power protection:
"A UPS supplies backup power to prevent data loss and hardware damage during outages or surges, ensuring system integrity." Verified Source:
* CompTIA A+ Core 1 (220-1101) Official Study Guide, Chapter 3: Power Protection
* CompTIA Exam Objectives 220-1101, Domain 3.3
質問 # 348
A technician is building a home desktop computer. The technician wants to prioritize cable management when considering the type of power supply. Which of the following power supply types should the technician consider?
- A. Back-up
- B. Standard
- C. Modular
- D. Redundant
正解：C
解説：
A modular power supply is the best choice when cable management is a priority. Modular PSUs allow technicians to connect only the cables that are needed for the system's components, reducing clutter inside the case.
This improves airflow, simplifies troubleshooting, and creates a cleaner internal layout, which is especially beneficial in home-built desktop systems. Semi-modular and fully modular power supplies offer varying degrees of flexibility, but all modular designs reduce unused cables compared to standard power supplies.
質問 # 349
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.
INSTRUCTIONS
Using the available printer parts, replace only the faulty components on the office printer to resolve the stated issues.
If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.
正解：
解説：
Explanation:
質問 # 350
Which storage device is best suited for a high-performance gaming laptop requiring fast data access?
- A. 1TB SAS SSD
- B. 750GB SATA III HDD
- C. 512GB NVMe M.2 SSD
- D. 1TB SATA 2.5" HDD
正解：C
解説：
NVMe SSDs use the PCIe bus and deliver far higher throughput and lower latency than SATA HDDs, which greatly improves load times and responsiveness for games.
2.5" and SATA III HDDs are much slower mechanical drives suited to bulk storage, not high- performance gaming, and SAS SSDs are typically enterprise/server parts, not common or optimal in gaming laptops.
質問 # 351
A company needs to print several copies of a multipage document with the least consumption of resources possible. Which of the following settings will best accomplish this task?
- A. Orientation
- B. Quality
- C. Tray settings
- D. Duplex
正解：D
解説：
The correct answer is A. Duplex.
In the CompTIA A+ Core 1 (220-1201) exam objectives under printer settings and configuration, duplex printing refers to printing on both sides of the paper automatically.
Using duplex printing is the best way to reduce resource consumption because:
It cuts paper usage in half, which is the primary resource being conserved.
It is ideal for multi-page documents and multiple copies.
It reduces physical storage and handling requirements.
Why the other options are incorrect:
B). Orientation
Orientation (portrait or landscape) changes the layout of the document but does not reduce resource usage.
C). Tray settings
Tray settings determine which paper tray is used (e.g., plain paper, letterhead), but they do not impact resource consumption.
D). Quality
Print quality (draft, normal, high) may affect ink/toner usage, but it does not reduce paper consumption as effectively as duplex printing, which is the main resource concern in this scenario.
Final answer: A. Duplex
質問 # 352
An office manager must scan a 300-page contract quickly. They are worried about scanning each page one at a time. Which feature will speed up the process?
- A. Duplexing
- B. Flatbed scanner
- C. Orientation configuration
- D. Automatic document feeder
正解：D
解説：
CompTIA A+ details that an Automatic Document Feeder (ADF) allows multi-page documents to be scanned automatically without manually placing each sheet on the flatbed. This drastically increases scanning efficiency for large documents.
Flatbed scanners require manual placement for every page. Duplexing scans both sides of a page but does not feed multiple sheets by itself. Orientation configuration only affects image alignment.
The ADF is explicitly highlighted in the A+ study guide as the primary feature used in business environments when scanning high-volume documents efficiently.
Thus, the ADF is the correct solution because it automates page feeding and dramatically reduces scanning time, especially for hundreds of pages.
質問 # 353
A user is setting up a gaming PC with multiple GPUs to play highly advanced games. The user's primary concern is that the power supply is sufficient to support these tasks while allowing for future upgrades. Which of the following power supply configurations should the user select?
- A. Non-modular
- B. Redundant
- C. Multiple-rail
- D. Low wattage
正解：C
解説：
For a gaming PC with multiple GPUs, the power supply must safely deliver high current on the 12V rails, since GPUs and CPUs draw most of their power from 12V. A multiple-rail power supply divides the 12V output into separate rails protected by overcurrent protection (OCP). This configuration helps prevent a single rail from being overloaded and can provide safer distribution when several high-draw components (multiple GPUs, high-end CPU) are installed. From a CompTIA A+ Core 1 perspective, selecting PSU characteristics that match system load and expansion needs is key, and multi-rail designs are directly related to supporting multiple high-power devices with better protection controls.
The other options do not meet the goal. Redundant PSUs are typically used in servers for uptime, not consumer gaming builds, and they don't inherently address GPU power distribution. Non-modular only affects cable management and airflow, not power capability or scalability. Low wattage directly conflicts with the requirement for multi-GPU performance and future upgrades. Therefore, the best choice given is multiple-rail.
質問 # 354
An office manager wants to know which users are printing the most pages. Which of the following can a technician enable to provide this data to the office manager?
- A. Control language
- B. Network scan services
- C. Firmware updates
- D. Audit logging
正解：D
解説：
Audit logging tracks and records user activities on devices such as printers, including print jobs and page counts, allowing identification of users with the highest usage.
質問 # 355
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