問57
頻出度★★☆
複数のコンピュータを LAN やインターネットなどのネットワークで結び, あたかも一つの高性能コンピュータのように利用できるようにする方式を何と呼ぶか。
平成23年度 特別試験 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
CAD (Computer Aided Design) refers to the application software and technical field used to carry out design work for machinery, buildings, electronic circuits and so on with a computer. It is a tool that supports design work, not a method of connecting multiple computers and using them as a single high-performance machine, so it is wrong.
Incorrectイ
An IDE (Integrated Development Environment) is development software that brings together the functions needed for program development, such as an editor, a compiler and a debugger, into one package. It integrates the developer's working environment, not the processing power of multiple computers on a network, so it is wrong.
- ウ
正解 The correct answer is ウ, “Grid computing.” Grid computing is a method that pools the CPU power and storage resources of many computers connected over a network such as a LAN or the Internet, so that to the user it looks as if a single high-performance computer (a virtual supercomputer) is doing the processing. It is based on the idea of distributed processing and parallel processing, in which a large job is split into small units, handed out to each computer, and the results are then collected. Its characteristic strength is therefore that large-scale computation can be carried out by using the idle computing power of existing PCs, without introducing expensive dedicated machines. Only this term satisfies both conditions in the question at the same time, namely “connected over a network” and “used as if it were a single high-performance computer,” so ウ is correct.
Incorrectエ
A thin client is a method in which the client terminal keeps only minimal functions such as input and output, while running applications and storing data are concentrated on the server side. It is a mechanism for concentrating processing on a single server and keeping the terminal light, not for bundling many computers together to create one high-performance computer (its purpose is also preventing information leakage and centralizing operational management, not large-scale computation), so it is wrong.
ここがポイント
- Grid computing = a distributed and parallel processing method that pools the processing power of many computers connected over a network and makes it look to the user like a single high-performance computer. The keywords are “connected over a network” and “as if it were a single high-performance computer.”
- Distinguishing confusingly similar terms: thin client = concentrating processing on the server and making the terminal lightweight (centralized processing); clustering = treating several machines as one system to raise performance and availability; CAD = design support; IDE = integrated development environment. Tell them apart by asking what is being brought together and for what purpose.
用語