CompTIA 220-1102問題集で100%カバー率リアル試験問題(更新された781問あります)
リアル220-1102問題集でリアルCompTIA問題集PDF
Comptia 220-1102試験では、オペレーティングシステム、セキュリティ、ソフトウェアのトラブルシューティング、オペレーショナル手順などのさまざまなトピックをカバーしています。コンピューターを扱った経験があり、IT業界でのキャリアを促進したい人向けに設計されています。この試験は、複数選択、ドラッグアンドドロップ、パフォーマンスベースの90の質問で構成されています。試験の合格スコアは900のうち700であり、候補者は試験を完了するのに90分かかります。試験に合格すると、候補者はComptia A+認定を受け取ります。これは、IT業界でより良い雇用機会とより高い給与を上陸させるのに役立つ貴重な資格です。
CompTIA A+ 認定試験:Core 2 に合格することは、IT プロフェッショナルにとって貴重な業績であり、IT サポートとトラブルシューティングの能力を証明します。この認定は、世界中の雇用主によって認められ、IT サポートの役割に必須となることがあります。この資格は、候補者がさまざまなオペレーティングシステム、ハードウェア、ソフトウェアを扱い、一般的な問題を効果的にトラブルシューティングできるスキルを持っていることを示しています。
質問 # 32
A user is unable to access a website, which is widely used across the organization, and receives the following error message:
The security certificate presented by this website has expired or is not yet valid.
The technician confirms the website works when accessing it from another computer but not from the user's computer. Which of the following should the technician perform NEXT to troubleshoot the issue?
- A. Reinstall the OS.
- B. Configure a static 12
- C. Reboot the computer.
- D. Check the computer's date and time.
正解:D
解説:
The error message indicates that the security certificate presented by the website has either expired or is not yet valid. This can happen if the computer's clock has the wrong date or time, as SSL/TLS certificates have a specific validity period. If the clock is off by too much, it may cause the certificate to fail to validate.
Therefore, the technician should check the computer's date and time and ensure that they are correct.
質問 # 33
A technician is troubleshooting a PC that will not run Windows Defender. Windows Defender has been disabled and no other antivirus is installed on the PC. Which of the following would have caused this issue?
- A. Keylogger
- B. Spyware
- C. Ransomware
- D. Rootkit
正解:D
解説:
Detailed Explanation with Core 2 References:Rootkits can disable antivirus programs, including Windows Defender, as they operate at a low level within the OS to avoid detection. This issue falls under malware types and removal strategies in Core 2 (Core 2 Objective 2.3).
質問 # 34
A technician is setting up a newly built computer. Which of the following is the fastest way for the technician to install Windows 10?
- A. In-place upgrade
- B. System Restore
- C. Unattended installation
- D. Factory reset
正解:C
解説:
Explanation
Windows 10
The correct answer is D. Unattended installation. An unattended installation is a way of installing Windows 10 without requiring any user input or interaction. It uses a configuration file called answer file that contains the settings and preferences for the installation, such as the product key, language, partition, and network settings.
An unattended installation can be performed by using a bootable USB flash drive or DVD that contains the Windows 10 installation files and the answer file1. This is the fastest way for the technician to install Windows 10 on a newly built computer, as it automates the whole process and saves time.
A factory reset is a way of restoring a computer to its original state by deleting all the data and applications and reinstalling the operating system. A factory reset can be performed by using the recovery partition or media that came with the computer, or by using the Reset this PC option in Windows 10 settings2. A factory reset is not a way of installing Windows 10 on a newly built computer, as it requires an existing operating system to be present.
A system restore is a way of undoing changes to a computer's system files and settings by using a restore point that was created earlier. A system restore can be performed by using the System Restore option in Windows
10 settings or by using the Advanced Startup Options menu3. A system restore is not a way of installing Windows 10 on a newly built computer, as it requires an existing operating system and restore points to be present.
An in-place upgrade is a way of upgrading an existing operating system to a newer version without losing any data or applications. An in-place upgrade can be performed by using the Windows 10 Media Creation Tool or by running the Setup.exe file from the Windows 10 installation media. An in-place upgrade is not a way of installing Windows 10 on a newly built computer, as it requires an existing operating system to be present.
質問 # 35
A technician wants to mitigate unauthorized data access if a computer is lost or stolen. Which of the following features should the technician enable?
- A. Static IP
- B. Group Policy
- C. Network share
- D. BitLocker
正解:D
解説:
Explanation
BitLocker is a Windows security feature that provides encryption for entire volumes, addressing the threats of data theft or exposure from lost, stolen, or inappropriately decommissioned devices1. BitLocker helps mitigate unauthorized data access by enhancing file and system protections, rendering data inaccessible when BitLocker-protected devices are decommissioned or recycled1. Network share, Group Policy, and Static IP are not features that can prevent unauthorized data access if a computer is lost or stolen.
References:
BitLocker overview - Windows Security | Microsoft Learn1
The Official CompTIA A+ Core 2 Study Guide2, page 315.
質問 # 36
Which of the following is the most likely reason a filtration system is critical for data centers?
- A. High humidity levels can rust metal.
- B. Dust particles can clog the machines.
- C. Insects can invade the data center.
- D. Plastics degrade over time.
正解:A
解説:
Explanation
A filtration system is critical for data centers because it can control the humidity and temperature levels in the environment. High humidity levels can cause condensation and corrosion on the metal components of the servers and other equipment, leading to malfunction and damage. A filtration system can also prevent dust, dirt, and other contaminants from entering the data center and clogging the machines or causing overheating.
質問 # 37
A technician has been unable to remediate a persistent malware infection on a user's workstation. After the technician reinstalled the OS. the malware infection returned later that day. Which of the following is the most likely source?
- A. Spyware
- B. Boot sector virus
- C. Rootkit
- D. Trojan
正解:B
解説:
A boot sector virus infects the master boot record (MBR) of a hard drive, the sector that contains information required to start the operating system after the computer is turned on. This type of virus is particularly insidious because it loads into memory immediately upon booting and before most antivirus programs start.
This makes it possible for the virus to evade detection and removal, and can easily reinfect a system even after the operating system is reinstalled if the boot sector is not cleaned.
Boot sector virus:Given that the malware infection returned after the OS reinstallation, it's likely that the virus was not removed from the boot sector during the reinstallation process. Reinstalling the OS without cleaning the boot sector won't remove the infection, allowing the virus to continue to affect the system.
Other options:
Trojan:A Trojan is a type of malware that disguises itself as legitimate software. While Trojans can be persistent, the reinstallation of the OS should remove any Trojans unless they are reintroduced after installation.
Spyware:Spyware is designed to gather information about a person or organization without their knowledge. Like Trojans, spyware should be removed with an OS reinstallation unless it is reintroduced in some way.
Rootkit:Rootkits are designed to enable continued privileged access to a computer while actively hiding their presence. While a rootkit could potentially survive an OS reinstall if it infects the firmware or certain areas outside the OS, the scenario described points more specifically to a boot sector virus, especially considering the immediate return of the infection after OS reinstallation.
質問 # 38
A user receives a notification indicating the antivirus protection on a company laptop is out of date. A technician is able to ping the user's laptop. The technician checks the antivirus parent servers and sees the latest signatures have been installed. The technician then checks the user's laptop and finds the antivirus engine and definitions are current. Which of the following has MOST likely occurred?
- A. Failed OS updates
- B. Ransomware
- C. Adware
- D. Missing system files
正解:C
質問 # 39
A user calls the help desk to report that none of the files on a PC will open. The user also indicates a program on the desktop is requesting payment in exchange for file access A technician verifies the user's PC is infected with ransorrrware. Which of the following should the technician do FIRST?
- A. Schedule automated malware scans
- B. Scan and remove the malware
- C. Disable System Restore
- D. Quarantine the system
正解:D
解説:
Explanation
The technician should quarantine the system first1
質問 # 40
Someone who is fraudulently claiming to be from a reputable bank calls a company employee. Which of the following describes this incident?
- A. Pretexting
- B. Spoofing
- C. Scareware
- D. Vishing
正解:D
解説:
Explanation
Vishing is a type of social engineering attack where a fraudulent caller impersonates a legitimate entity, such as a bank or financial institution, in order to gain access to sensitive information. The caller will typically use a variety of techniques, such as trying to scare the target or providing false information, in order to get the target to provide the information they are after. Vishing is often used to gain access to usernames, passwords, bank account information, and other sensitive data.
質問 # 41
A user requested that the file permissions on a Linux device be changed to only allow access to a certain group of users. Which of the following commands should be used to complete the user's request?
- A. pwd
- B. cacls
- C. cat
- D. chmod
正解:D
解説:
The chmod command is used to change the permissions of files and directories in Linux. It can grant or revoke read, write, and execute permissions for the owner, the group, and others. To change the file permissions to only allow access to a certain group of users, the chmod command can use either the symbolic or the numeric mode. For example, to give read and write permissions to the group and no permissions to others, the command can be:
chmod g+rw,o-rwx filename
or
chmod 660 filename
References: 1 Chmod Command in Linux (File Permissions) | Linuxize(https://linuxize.com/post/chmod- command-in-linux/)2 How To Change File or Directory Permissions in Linux | Tom's Hardware(https://www.
tomshardware.com/how-to/change-file-directory-permissions-linux).
質問 # 42
An Internet cafe has several computers available for public use. Recently, users have reported the computers are much slower than they were the previous week. A technician finds the CPU is at 100% utilization, and antivirus scans report no current infection. Which of the following is MOST likely causing the issue?
- A. Spyware is redirecting browser searches.
- B. A cryptominer is verifying transactions.
- C. Files were damaged from a cleaned virus infection.
- D. A keylogger is capturing user passwords.
正解:B
解説:
Explanation
A cryptominer is a malicious program that uses the CPU resources of a computer to generate cryptocurrency, such as Bitcoin or Ethereum. This can cause the CPU to run at 100% utilization and slow down the system.
Spyware, virus and keylogger are other types of malware, but they do not necessarily cause high CPU usage.
Verified References: https://www.comptia.org/blog/what-is-cryptomining
https://www.comptia.org/certifications/a
質問 # 43
A technician is investigating an employee's smartphone that has the following symptoms
* The device is hot even when it is not in use.
* Applications crash, especially when others are launched
* Certain applications, such as GPS, are in portrait mode when they should be in landscape mode Which of the following can the technician do to MOST likely resolve these issues with minimal impact? (Select TWO).
- A. Update the device's operating system
- B. Activate airplane mode.
- C. Close unnecessary applications
- D. Reinstall the applications that have crashed.
- E. Turn on autorotation
- F. Perform a factory reset
正解:C、E
解説:
The technician can close unnecessary applications and turn on autorotation to resolve these issues with minimal impact. Autorotation can help the device to switch between portrait and landscape modes automatically. Closing unnecessary applications can help to free up the device's memory and reduce the device's temperature1 Reference:
CompTIA A+ Certification Exam: Core 2 (220-1102) Exam Objectives Version 4.0. Retrieved from https://partners.comptia.org/docs/default-source/resources/comptia-a-220-1102-exam-objectives-(3-0)
質問 # 44
A company is recycling old hard drives and wants to quickly reprovision the drives for reuse. Which of the following data destruction methods should the company use?
- A. Degaussing
- B. Standard formatting
- C. Low-level wiping
- D. Deleting
正解:C
解説:
Low-level wiping is the best data destruction method for recycling old hard drives for reuse. Low-level wiping is a process that overwrites every bit of data on a hard drive with zeros or random patterns, making it impossible to recover any data from the drive. Low-level wiping also restores the drive to its factory state, removing any bad sectors or errors that may have accumulated over time. Low-level wiping can be done using specialized software tools or hardware devices that connect to the drive. Degaussing, standard formatting, and deleting are not suitable data destruction methods for recycling old hard drives for reuse. Degaussing is a process that exposes a hard drive to a strong magnetic field, destroying both the data and the drive itself.
Degaussing renders the drive unusable for reuse. Standard formatting is a process that erases the data on a hard drive by removing the file system structure, but it does not overwrite the data itself. Standard formatting leaves some data recoverable using forensic tools or software utilities. Deleting is a process that removes the data from a hard drive by marking it as free space, but it does not erase or overwrite the data itself. Deleting leaves most data recoverable using undelete tools or software utilities. References:
Official CompTIA learning resources CompTIA A+ Core 1 and Core 2, page 15 CompTIA A+ Complete Study Guide: Core 1 Exam 220-1101 and Core 2 Exam ..., page 105
質問 # 45
A user is unable to access the company's network. A technician learns the user's account became inaccessible after multiple unsuccessful login attempts. The user also changed their password before the issue started.
Which of the following steps should the technician take to resolve the issue?
- A. Reset the user's password.
- B. Unlock the user's account.
- C. Verify the user's login and password.
- D. Escalate the user's issue to the network team.
正解:B
解説:
Detailed Explanation with Core 2 References:If multiple unsuccessful attempts led to the account being locked, the technician should unlock the account. Core 2 covers user account management practices, including unlocking accounts and managing failed login attempts (Core 2 Objective 2.5).
質問 # 46
A Linux technician needs a filesystem type that meets the following requirements:
. All changes are tracked.
. The possibility of file corruption is reduced.
* Data recovery is easy.
Which of the following filesystem types best meets these requirements?
- A. ext3
- B. NTFS
- C. FAT32
- D. exFAT
正解:A
解説:
The ext3 file system is a Linux native file system that meets the requirements of the question. It has the following features:
All changes are tracked. The ext3 file system uses a journaling mechanism that records all changes to the file system metadata in a special log called the journal before applying them to the actual file system. This ensures that the file system can be restored to a consistent state in case of a power failure or system crash12.
The possibility of file corruption is reduced. The journaling feature of ext3 also reduces the possibility of file corruption, as it avoids the need for a full file system check after an unclean shutdown. The file system can be quickly replayed from the journal and any inconsistencies can be fixed12.
Data recovery is easy. The ext3 file system supports undeletion of files using tools such as ext3grep or extundelete, which can scan the file system for deleted inodes and attempt to recover the data blocks associated with them34.
Reference:
1: Introduction to Linux File System [Structure and Types] - MiniTool1 2: 7 Ways to Determine the File System Type in Linux (Ext2, Ext3 or Ext4) - Tecmint3 3: How to Recover Deleted Files in Linux with ext3grep 4: How to Recover Deleted Files from ext3 Partitions
質問 # 47
A change advisory board authorized a setting change so a technician is permitted to Implement the change.
The technician successfully implemented the change. Which of the following should be done next?
- A. Document the date and time of change
- B. Document the purpose of the change.
- C. Document the risk level.
- D. Document the findings of the sandbox test,
正解:A
解説:
The correct answer is A. Document the date and time of change. After implementing a change, the technician should document the date and time of change in the change log or record. This helps to track the change history, monitor the change performance, and identify any issues or incidents related to the change.
Documenting the date and time of change is also a good practice for auditing and compliance purposes.
Documenting the purpose of the change (B) and the risk level © are steps that should be done before implementing the change, not after. These are important information that help to justify, prioritize, and plan the change. The purpose of the change should explain why the change is needed and what benefits it will bring to the organization. The risk level should assess the potential impact and probability of the change causing any problems or disruptions to the business.
Documenting the findings of the sandbox test (D) is also a step that should be done before implementing the change, not after. A sandbox test is a way of testing the change in an isolated environment that mimics the production environment. This helps to verify that the change works as expected and does not cause any errors or conflicts with other systems or processes. The findings of the sandbox test should be documented and reviewed by the change advisory board (CAB) before approving the change for implementation.
References:
What is a Change Advisory Board? (Overview, Roles, and Responsibilities) Best Practices in Change Management
10 Top change management best practices
質問 # 48
A technician is editing the hosts file on a few PCs in order to block certain domains. Which of the following would the technician need to execute after editing the hosts file?
- A. Clear the browser cache.
- B. Add a new network adapter.
- C. Enable promiscuous mode.
- D. Reset the network adapter.
正解:D
解説:
Resetting the network adapter is the best way to apply the changes made to the hosts file on a few PCs. The hosts file is a text file that maps hostnames to IP addresses and can be used to block certain domains by redirecting them to invalid or local addresses. Resetting the network adapter will clear the DNS cache and force the PC to use the new entries in the hosts file.
質問 # 49
Which of the following operating systems is considered closed source?
- A. Android
- B. OSX
- C. CentOS
- D. Ubuntu
正解:B
解説:
OSX (now macOS) is an operating system that is considered closed source, meaning that its source code is not publicly available or modifiable by anyone except its developers. It is owned and maintained by Apple Inc. Ubuntu, Android and CentOS are operating systems that are considered open source, meaning that their source code is publicly available and modifiable by anyone who wants to contribute or customize them. Verified Reference: https://www.comptia.org/blog/open-source-vs-closed-source-software https://www.comptia.org/certifications/a
質問 # 50
A user is attempting to browse the internet using Internet Explorer. When trying to load a familiar web page, the user is unexpectedly redirected to an unfamiliar website. Which of the following would MOST likely solve the issue?
- A. Reinstalling the browser
- B. Changing proxy settings
- C. Enabling port forwarding
- D. Updating the operating system
正解:A
解説:
Explanation
Reinstalling the browser would most likely solve the issue. This would remove any malicious software or add-ons that may be causing the issue and restore the browser to its default settings.
質問 # 51
Which of the following filesystems supports journaling?
- A. exFAT
- B. HFS
- C. ext2
- D. NTFS
正解:D
解説:
Journaling is a feature that helps maintain the integrity of the filesystem by keeping a record of changes not yet committed to the main file system. This feature is supported by various filesystems, but not all.
* Option A: NTFSNTFS (New Technology File System) is a filesystem used by Windows that supports journaling. This makes it resilient to corruption from unexpected shutdowns or crashes by keeping a log of file changes.
* Option B: exFATexFAT (Extended File Allocation Table) does not support journaling. It is optimized for flash drives and large files but lacks advanced features like journaling.
* Option C: HFSHFS (Hierarchical File System) is an older filesystem used by Apple. HFS+ (also known as Mac OS Extended) supports journaling, but HFS itself does not.
* Option D: ext2ext2 (Second Extended File System) is a filesystem for Linux that does not support journaling. Its successor, ext3, introduced journaling.
References:
* CompTIA A+ 220-1102 Objective 1.8 (Explain common OS types and their purposes), particularly filesystems and their features.
質問 # 52
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CompTIA 220-1102 は、CompTIA A+ 認定試験: Core 2 としても知られる認定試験で、初心者レベルの IT プロフェッショナルのトラブルシューティング、ネットワーク、オペレーティングシステム、セキュリティ、モバイルデバイスに関するスキルと知識を評価するものです。この認定試験は、重要な IT サポートタスクを実行する能力と、業界の最新技術とトレンドに関する理解を示す候補者の能力を検証することを目的としています。CompTIA 220-1102 認定試験に合格することは、認定 IT プロフェッショナルになるための重要なステップであり、フィールドでのキャリアアップを促進するための手段です。
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