問71
頻出度★☆☆
ノート PC やタブレット端末などに接続して利用する機能拡張用の機器であり, シリアルポートやパラレルポート, HDMI 端子, LAN 端子などの複数種類の接続端子をもつものはどれか。
平成30年度 春期 ITパスポート試験 問71
テクノロジ系コンピュータ構成要素 › 入出力デバイス
This question's explanation and your answers so far.
解説
問 71
Incorrectア
A PS/2 port is itself just one type of connection port (interface) for connecting a keyboard or mouse; it is not an expansion device that bundles multiple types of ports.
Incorrectイ
A USB hub is a device that splits one USB port into multiple USB ports, so only USB ports are added. It does not provide a bundle of different kinds of ports such as serial, parallel, HDMI, and LAN.
Incorrectウ
An expansion slot is on the motherboard inside the PC and is a socket for inserting an expansion card (board). It is not a device you connect externally, so it does not fit the connect-and-use device described in the stem.
- エ
正解 A port replicator is an external device that connects to a notebook PC or tablet to expand its functions, and it bundles together several types of connection ports such as serial, parallel, HDMI, and LAN ports. By plugging in just one connector on the notebook PC side (a dedicated port or USB, etc.), you can use an external display, wired LAN, and various peripherals all at once, letting you switch efficiently between carrying it around and desk-based work. This matches the function-expansion device with multiple types of connection ports described in the stem, so the correct answer is エ.
ここがポイント
- A port replicator (a docking-station type of device) = a function-expansion device that connects to a notebook PC and provides a bundle of multiple types of connection ports such as serial, parallel, HDMI, and LAN.
- Keep straight the roles of each term: a USB hub only increases the number of USB ports, an expansion slot is a socket inside the PC, and PS/2 is a single interface.
用語