問57
頻出度★★☆
サーバの仮想化技術において, あるハードウェアで稼働している仮想化されたサーバを停止することなく別のハードウェアに移動させ, 移動前の状態から引き続きサーバの処理を継続させる技術を何と呼ぶか。
令和元年度 秋期 ITパスポート試験 問57
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 57
Incorrectア
“Streaming” is a delivery method that plays back data such as audio or video while it is still being received. It has nothing to do with migrating a virtual server.
Incorrectイ
“Digital signage” is a system that delivers information or advertisements using electronic display devices such as displays. It is unrelated to virtualization or server migration.
Incorrectウ
“Plug and Play” is a feature by which the OS automatically recognizes and configures a peripheral device when it is connected. It is not a technology for moving a running virtual server to different hardware.
- エ
正解 “Live Migration” is a technology that moves a running virtual server to a different piece of physical hardware without shutting it down, carrying over the pre-move processing exactly as it was, including the state held in memory. It precisely satisfies the question’s conditions of moving to different hardware without stopping and continuing processing from the state before the move, so エ is correct. It is used to evacuate a server to another machine without stopping the service, for example during hardware maintenance or load balancing.
ここがポイント
- Live Migration = a technology that moves a running virtual server to another physical server without stopping it and continues processing while preserving its state.
- Streaming, digital signage, and plug and play are all terms from fields other than virtual-server migration; use the keywords “without stopping” and “continuing from the same state” to tell them apart.
用語