令和8年度 ITパスポート試験問87

This question's explanation and your answers so far.

問87

頻出度★★☆

NAS の説明として, 適切なものはどれか。

出典　令和8年度 ITパスポート試験問87

解説

問 87

ア
正解 NAS (Network Attached Storage), as its name suggests, is storage that connects directly to a network. It connects directly to a LAN via Ethernet or similar, and refers to an external storage device that multiple devices such as PCs and smartphones can read from and write to over the network. Choice ア expresses exactly this, and is the very definition of NAS. Rather than being built into or attached to a specific PC, it is placed on the network, so it can be used as a shared repository for file sharing among multiple users and for backups; this is its characteristic feature.
Incorrectイ
Reaching the target data directly regardless of its position on the storage medium or the order in which it was written describes random access (direct access), which is about file formats and recording methods. This is a different concept from NAS, a network-attached storage device, so it is incorrect.
Incorrectウ
The technology that bundles multiple storage devices into one and distributes data to speed up access and improve fault tolerance describes RAID. RAID is a mechanism for raising a device's reliability and performance, which differs from the essence of NAS, namely connecting to a network for sharing, so it is incorrect.
Incorrectエ
A character string used to identify a wireless LAN network describes SSID (ESSID). This is an identifier name used to distinguish wireless LAN access points, and is unrelated to NAS, a storage device, so it is incorrect.

ここがポイント

NAS = Network Attached Storage. It is an external storage device that connects directly to a LAN and can be shared over the network by multiple devices.
Distinguish the confusing terms: random access (direct access) / RAID (how multiple disks are bundled) / SSID (a wireless LAN identifier name) are all concepts different from NAS.

用語

解答問87ア