IPA IP 2021 Question 82
A question IPA Japan published in 令和3年度 ITパスポート試験 公開問題 問82, translated into English. ITPEC is based on the same exams.
Which of the following is a method in which parallel processing is performed by multiple computers that are connected to a network, so that they can be used as a computer that virtually has high processing capability?
Explanation
Grid computing — many computers on a network share one job in parallel and act as one virtual high-performance computer.
In grid computing a large job is divided into pieces, the pieces are distributed to many computers connected over a network, and the results are collected again. Together the computers give processing capacity that no single one of them has, much like a supercomputer, often using idle machines that are already in place. Volunteer projects that borrow home PCs' spare time for scientific calculation are a well-known example.
Answer (b)
Why not others:
- •(a) Wearable computing — computers worn on the body, such as smart watches and smart glasses
- •(c) Mobile computing — using computers and networks while on the move, with notebook PCs, smartphones and mobile communication
- •(d) Ubiquitous computing — computers embedded everywhere in everyday life, so that information can be used anytime and anywhere
Key rule: Many networked computers sharing one job to act as one powerful virtual computer is grid computing; the other "computing" terms describe where or how a computer is used.
System Component · AI-written, may contain errors
This question comes from the past questions IPA Japan publishes, translated into English by ITPEC Practice. ITPEC Practice is an independent study tool and is not affiliated with IPA or ITPEC. See the original paper (PDF) or Report an issue.