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CompTIA SK0-005試験は、サーバー管理者にとって必要不可欠なサーバーアーキテクチャ、インストール、構成、メンテナンス、トラブルシューティング、ストレージ、セキュリティ、災害復旧などの幅広いトピックをカバーしています。また、クラウドコンピューティング、仮想化、コンテナ化などの最新のサーバーテクノロジーもカバーしています。この試験は、オンプレミス、クラウドベース、ハイブリッド環境を含む様々な環境でサーバーを管理・維持する能力をテストするために設計されています。
試験は、90問の複数選択問題とパフォーマンスベースの問題から構成され、90分以内に完了する必要があります。問題は、サーバーアーキテクチャ、ストレージ、セキュリティ、災害復旧、トラブルシューティングなどの分野で、候補者の知識とスキルをテストするように設計されています。試験に合格すると、3年間有効なCompTIA Server 認定を受けることができます。
CompTIA SK0-005試験は、サーバー管理者のスキルと知識を認定する世界的に認められた資格です。この試験は、サーバーハードウェアとソフトウェア、トラブルシューティング、仮想化、ストレージとセキュリティ、そして災害復旧とビジネス継続性の理解をテストするように設計されています。試験は、IT環境で少なくとも18〜24か月間サーバーハードウェアやソフトウェアを扱った経験がある個人に推奨されています。
質問 # 44
Which of the following commands would MOST likely be used to register a new service on a Windows OS?
- A. sc
- B. set-service
- C. services.msc
- D. net
正解：A
解説：
The sc command is used to create, delete, start, stop, pause, or query services on a Windows OS. It can also be used to register a new service by using the create option. Reference: https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/sc-create
質問 # 45
Which of the following if properly configured would prevent a user from installing an OS on a server? (Select TWO).
- A. BIOS/UEFI password
- B. Root password
- C. SELInux
- D. Group Policy Object
- E. Bootloader password
- F. Administrator password
正解：A、E
解説：
Requiring a boot password upon execution of the boot loader will prevent an unauthorized user from entering boot parameters or changing the boot partition. This prevents users from weakening security (e.g. turning off SELinux at boot time).
What is a UEFI password?
A UEFI, or BIOS, password is a password that must be entered when the machine is powered on or rebooted in order to continue. Without the password the machine cannot be booted at all - even from external media - and no configuration changes to the UEFI or BIOS settings can be made.
https://www.tenable.com/audits/items/CIS_Red_Hat_EL7_STIG_v2.0.0_STIG.audit:1ee8630516d a75be0fabf64c11ab70c6
https://askleo.com/how_do_i_remove_a_bios_password/#
質問 # 46
A systems administrator is performing maintenance on 12 Windows servers that are in different racks at a large datacenter. Which of the following would allow the administrator to perform maintenance on all 12 servers without having to physically be at each server? (Choose two.)
- A. IP KVM
- B. A console connection
- C. A virtual administration console
- D. Remote drive access
- E. Remote desktop
- F. A crash cart
正解：A、E
解説：
https://www.blackbox.be/en-be/page/27559/Resources/Technical-Resources/Black-Box- Explains/kvm/Benefits-of-using-KVM-over-IP
質問 # 47
A systems administrator is preparing to install two servers in a single rack. The administrator is concerned that having both servers in one rack will increase the chance of power issues due to the increased load. Which of the following should the administrator implement FIRST to address the issue?
- A. Separate circuits
- B. An uninterruptible power supply
- C. Redundant power supplies
- D. Increased PDU capacity
正解：A
解説：
The administrator should implement separate circuits first to address the issue of power issues due to the increased load. Separate circuits are electrical wiring systems that provide independent power sources for different devices or groups of devices. By using separate circuits, the administrator can avoid overloading a single circuit with too many servers and reduce the risk of power outages, surges, or fires. Separate circuits also provide redundancy and fault tolerance, as a failure in one circuit will not affect the other circuit.
質問 # 48
A datacenter in a remote location lost power. The power has since been restored, but one ol the servers has not come back online. After some investigation, the server is found to still be powered off. Which of the following is the BEST method to power on the server remotely?
- A. Out-of-band console
- B. Crash cart
- C. IP KVM
- D. RDP
正解：A
質問 # 49
Which of the following must a server administrator do to ensure data on the SAN is not compromised if it is leaked?
- A. Encrypt the host servers
- B. Encrypt the data at rest
- C. Encrypt the data that is leaving the SAN
- D. Encrypt all the network traffic
正解：B
質問 # 50
A technician has received multiple reports of issues with a server. The server occasionally has a BSOD, powers off unexpectedly, and has fans that run continuously. Which of the following BEST represents what the technician should investigate during troubleshooting?
- A. CPU overheating
- B. Firmware incompatibility
- C. LED indicators
- D. ESD issues
正解：A
解説：
Unexpected shutdowns. If the system is randomly shutting down or rebooting, the most likely cause is a heat problem.
質問 # 51
A systems administrator has noticed performance degradation on a company file server, and one of the disks on it has a solid amber light. The administrator logs on to the disk utility and sees the array is rebuilding.
Which of the following should the administrator do NEXT once the rebuild is finished?
- A. Swap the drive and initialize the array.
- B. Restore the server from backup.
- C. Swap the drive and initialize the disk.
- D. Restore the server from a snapshot.
正解：C
質問 # 52
An administrator is configuring a server that will host a high-performance financial application. Which of the following disk types will serve this purpose?
- A. SAS SSD
- B. SATA drive with 15000rpm
- C. SATA SSD
- D. SAS drive with 10000rpm
正解：A
解説：
Reference:
https://www.hp.com/us-en/shop/tech-takes/sas-vs-sata
質問 # 53
Which of the following open ports should be closed to secure the server properly? (Choose two.)
- A. 0
- B. 1
- C. 2
- D. 3
- E. 4
- F. 5
正解：C、E
解説：
The administrator should close ports 21 and 23 to secure the server properly. Port 21 is used for FTP (File Transfer Protocol), which is an unsecure protocol that allows file transfer between a client and a server over a network connection. FTP does not encrypt the data or the credentials that are transmitted, making them vulnerable to interception or modification by attackers. Port 23 is used for Telnet, which is an unsecure protocol that allows remote login and command execution over a network connection using a CLI. Telnet does not encrypt the data or the credentials that are transmitted, making them vulnerable to interception or modification by attackers.
Reference:
https://www.csoonline.com/article/3191531/securing-risky-network-ports.html
質問 # 54
Users at a company work with highly sensitive dat
a. The security department implemented an administrative and technical control to enforce least-privilege access assigned to files. However, the security department has discovered unauthorized data exfiltration. Which of the following is the BEST way to protect the data from leaking?
- A. Install a DLP solution.
- B. Utilize privacy screens.
- C. Enforce the lock-screen feature.
- D. Implement disk quotas.
正解：A
解説：
Components of a Data Loss Solution
質問 # 55
Which of the following will correctly map a script to a home directory for a user based on username?
- A. \\server\$username$
- B. \\server\%username%
- C. \\server\users$\username
- D. \\server\FirstInitialLastName
正解：B
解説：
% are used for variables in Microsoft. $ are Linux/Unix.
質問 # 56
Which of the following is a method that is used to prevent motor vehicles from getting too close to building entrances and exits?
- A. Reflective glass
- B. Bollards
- C. Security cameras
- D. Security guards
正解：B
質問 # 57
A server administrator receives a report that Ann, a new user, is unable to save a file to her home directory on a server. The administrator checks Ann's home directory permissions and discovers the following:
dr-xr-xr-- /home/Ann
Which of the following commands should the administrator use to resolve the issue without granting unnecessary permissions?
- A. chmod 711 /home/Ann
- B. chmod 666 /home/Ann
- C. chmod 777 /home/Ann
- D. chmod 754 /home/Ann
正解：D
解説：
https://linuxize.com/post/what-does-chmod-777-mean/
質問 # 58
A developer is creating a web application that will contain five web nodes. The developer's main goal is to ensure the application is always available to the end users. Which of the following should the developer use when designing the web application?
- A. Link aggregation
- B. Bridged networking
- C. Network address translation
- D. Round robin
正解：D
質問 # 59
A new application server has been configured in the cloud to provide access to all clients within the network. On-site users are able to access all resources, but remote users are reporting issues connecting to the new application. The server administrator verifies that all users are configured with the appropriate group memberships. Which of the following is MOST likely causing the issue?
- A. Group policies have not been applied.
- B. Telnet connections are disabled on the server.
- C. Role-based access control is misconfigured.
- D. There are misconfigured firewall rules.
正解：D
解説：
This is the most likely cause of the issue because firewall rules can block or allow traffic based on source, destination, port, protocol, or other criteria. If the firewall rules are not configured properly, they can prevent remote users from accessing the cloud application server, while allowing on-site users to access it. Reference: https://docs.microsoft.com/en-us/azure/virtual-network/security-overview
質問 # 60
A company has implemented a requirement to encrypt all the hard drives on its servers as part of a data loss prevention strategy. Which of the following should the company also perform as a data loss prevention method?
- A. Implement MFA on all the servers with encrypted data
- B. Encrypt all network traffic
- C. Implement port security on the switches
- D. Block the servers from using an encrypted USB
正解：A
解説：
The company should also implement MFA on all the servers with encrypted data as a data loss prevention method. MFA stands for multi-factor authentication, which is a method of verifying a user's identity by requiring two or more pieces of evidence, such as something they know (e.g., a password), something they have (e.g., a token), or something they are (e.g., a fingerprint). MFA adds an extra layer of security to prevent unauthorized access to sensitive data, even if the user's password is compromised or stolen. Encrypting the hard drives on the servers protects the data from being read or copied if the drives are physically removed or stolen, but it does not prevent unauthorized access to the data if the user's credentials are valid.
質問 # 61
Which of the following BEST describes the concept of right to downgrade?
- A. It allows a server to run on fewer resources than what is outlined in the minimum requirements document without purchasing a license
- B. It allows a previous version of an OS to be installed and covered by the same license as the newer version
- C. It allows for the return of a new OS license if the newer OS is not compatible with the currently installed software and is returning to the previously used OS
- D. It allows for a previous version of an OS to be deployed in a test environment for each current license that is purchased
正解：B
解説：
The concept of right to downgrade allows a previous version of an OS to be installed and covered by the same license as the newer version. For example, if a customer has a license for Windows 10 Pro, they can choose to install Windows 8.1 Pro or Windows 7 Professional instead and still be compliant with the license terms. Downgrade rights are granted by Microsoft for certain products and programs, such as Windows and Windows Server software acquired through Commercial Licensing, OEM, or retail channels. Downgrade rights are intended to provide customers with flexibility and compatibility when using Microsoft software.
質問 # 62
A datacenter technician needs to wire several switches together to increase port capacity. These switches do not have auto-MDI capability. Which of the following types of cable is the technician MOST likely to use to connect the switches together?
- A. Cat 5 crossover
- B. Cat 6 straight-through
- C. Cat 6 rollover
- D. Cat 5e straight-through
正解：A
質問 # 63
A server administrator is exporting Windows system files before patching and saving them to the following location:
\\server1\ITDept\
Which of the following is a storage protocol that the administrator is MOST likely using to save this data?
- A. eSATA
- B. SAS
- C. CIFS
- D. FCoE
正解：C
解説：
The storage protocol that the administrator is most likely using to save data to the location \server1\ITDept\ is CIFS. CIFS (Common Internet File System) is a protocol that allows file sharing and remote access over a network. CIFS is based on SMB (Server Message Block), which is a protocol that enables communication between devices on a network. CIFS uses UNC (Universal Naming Convention) paths to identify network resources, such as files or folders. A UNC path has the format \servername\sharename\path\filename. In this case, server1 is the name of the server, ITDept is the name of the shared folder, and \ is the path within the shared folder.
質問 # 64
A server technician is deploying a server with eight hard drives. The server specifications call for a RAID configuration that can handle up to two drive failures but also allow for the least amount of drive space lost to RAID overhead. Which of the following RAID levels should the technician configure for this drive array?
- A. RAID 5
- B. RAID 6
- C. RAID 0
- D. RAID 10
正解：B
解説：
RAID 6 Disk Striping with Double Parity
The RAID 6 design distributes data across a minimum of four HDDs the same way that RAID 0 and RAID 5 do, but it also distributes parity information across two disks. The result is that a RAID 6 array can recover data even with the failure of two HDDs. Reads are quick, like RAID 5, but writes are slower due to the duplication of the parity data. It is a good general solution as long as the performance hit on write tasks is not a problem for your environment.
RAID 6 requires a minimum of four HDDs.
質問 # 65
A technician needs to install a Type 1 hypervisor on a server. The server has SD card slots, a SAS controller, and a SATA controller, and it is attached to a NAS. On which of the following drive types should the technician install the hypervisor?
- A. SAS drive
- B. NAS drive
- C. SATA drive
- D. SD card
正解：A
解説：
Assuming SD Slots are internal. If so, then Internal SD Slots are recommended.
質問 # 66
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