問57
頻出度★☆☆
CPU, 主記憶, HDD などのコンピュータを構成する要素を1枚の基板上に実装し, 複数枚の基板をラック内部に搭載するなどの形態がある, 省スペース化を実現しているサーバを何と呼ぶか。
令和3年度 ITパスポート試験 問57
This question's explanation and your answers so far.
解説
問 57
Incorrectア
A DNS server is a server responsible for name resolution — mutually converting domain names (e.g., www.example.com) and IP addresses — and is a classification based on the “function or purpose” it provides. It is not a term expressing a “physical chassis form” such as a board-mounting style or space savings, so it is incorrect.
Incorrectイ
An FTP server is a functional server for transferring and sharing files via the FTP protocol, and is likewise a classification by role. It is not the name for space-saving hardware that mounts boards into a rack, so it is incorrect.
Incorrectウ
A Web server is a server with the function of delivering web pages to browsers over HTTP, and is again a classification by purpose. It is not the term for the “physical form of consolidating components onto a single board and mounting it into a rack” that the stem asks about, so it is incorrect.
- エ
正解 “エ Blade server” is correct. A blade server is a type of server in which the components a single computer needs — CPU, main memory, HDD, and so on — are packed onto one thin board called a “blade”, and multiple such boards are inserted and mounted into a dedicated enclosure or inside a rack. Because power supply, cooling fans, networking, and the like can be shared on the enclosure side, it greatly reduces the footprint (space savings), cabling, and power consumption compared with lining up the same number of ordinary servers. The stem’s statements — “mounted on a single board”, “multiple boards mounted inside a rack”, and “space savings” — all match these characteristics.
ここがポイント
- Blade server = a server form that consolidates the CPU, main memory, HDD, and so on onto one thin board (a blade) and mounts multiple boards into a dedicated enclosure or rack to achieve space savings, power savings, and simpler cabling (a classification by physical form).
- DNS, FTP, and Web servers are classifications by the “function or purpose they fulfill,” which is a different axis of classification from the blade server that expresses a hardware implementation form — distinguish this point.
用語