問59
頻出度★★☆
LAN に直接接続して, 複数の PC から共有できるファイルサーバ専用機を何というか。
平成25年度 秋期 ITパスポート試験 問59
テクノロジ系システム構成要素 › システムの構成
This question's explanation and your answers so far.
解説
問 59
Incorrectア
CSV (Comma Separated Values) is a text file format for tabular data in which values are listed separated by commas; it is not a device. It is used as a common format for passing data between spreadsheet software and databases, and belongs to a completely different category from a “dedicated device connected to a LAN.”
- イ
正解 The correct answer is イ, NAS. NAS stands for Network Attached Storage, and just as the name says, it refers to “storage that is attached to a network.” The unit has a LAN port and a minimal OS (file-sharing functions) built in, so without going through a PC you simply connect it directly to the network with a LAN cable, and multiple PCs on that network can use it as a shared place to store files. This is exactly the “dedicated file server device that connects directly to a LAN and can be shared by multiple PCs” described in the question, and its distinguishing feature is that it is a dedicated device whose functions are narrowed down to file sharing alone. Unlike installing an OS on a general-purpose server to turn it into a file server, you only need to connect power and the LAN and it is ready to use, so it is widely used as shared storage in homes and small offices.
Incorrectウ
RAID (Redundant Arrays of Inexpensive Disks) is the name of a technology or scheme that bundles multiple hard disks together so they act as one, gaining higher speed or fault tolerance (redundancy). It is only a technology for the internal configuration of storage, and by itself it does not refer to a dedicated file server device that connects to a LAN. Note that RAID is often used inside a NAS, but the two are separate concepts and should not be confused.
Incorrectエ
RSS is an XML-based document format used to distribute update information (headlines, summaries, URLs, and so on) from news sites and blogs. It is used to receive the latest information all together in an RSS reader, and has nothing to do with hardware for file sharing.
ここがポイント
- NAS = a dedicated file server device that connects directly to a LAN and is shared by multiple PCs. Remember it literally as “storage attached to a network.”
- Tell the similar abbreviations apart: CSV is a file format for data, RAID is a redundancy technology that bundles multiple disks, and RSS is a distribution format for update information. The only one that is a “device,” as the question asks, is NAS.
用語