問57
頻出度★☆☆
OSS (Open Source Software) であるメールソフトはどれか。
平成27年度 春期 ITパスポート試験 問57
テクノロジ系ソフトウェア › オープンソースソフトウェア
This question's explanation and your answers so far.
解説
問 57
Incorrectア
Android is an OS (operating system) for smartphones and tablets, developed mainly by Google. Parts of it are released as OSS, but it is not email software itself, so this choice is wrong.
Incorrectイ
Firefox is a web browser developed by Mozilla. It is indeed OSS, but its role is to browse web pages. Because it also comes from Mozilla, it is easy to confuse with Thunderbird, but it is not email software, so this choice is wrong.
Incorrectウ
MySQL is a well-known OSS relational database management system (RDBMS), software that handles storing and searching data. It is not email software, so this choice is wrong.
- エ
正解 The correct answer is エ, Thunderbird. Thunderbird is an email client (email software) developed and released by Mozilla; its source code is public and it can be freely used, modified, and redistributed, so it is OSS (Open Source Software). This question asks you to pick the item that satisfies two conditions at once: being OSS and being email software. All of the choices are well-known OSS, but only エ is software for sending, receiving, and managing email, so the deciding factor is judging what type (purpose) each piece of software has.
ここがポイント
- OSS (Open Source Software) means software whose source code is public and which may be freely used, modified, and redistributed. Note that being free of charge is not the essence of the definition.
- Memorize well-known OSS organized by type: OS = Linux and Android; web browser = Firefox; email software = Thunderbird; RDBMS = MySQL and PostgreSQL; web server = Apache HTTP Server; office software = LibreOffice.
用語