サムネイルの説明として, 適切なものはどれか。
令和7年度 ITパスポート試験 問79
This question's explanation and your answers so far.
問 79
- ア
正解 A thumbnail is a small preview image that displays the content of an image or document file at a reduced size. It lets you grasp the content at a glance without opening the file, and is used in places such as the list views of image viewers and file management software to efficiently tell many files apart. Choice ア, “a reduced-size display of the content of an image or document file,” exactly matches this definition, so it is correct.
Incorrectイ
“A small picture or symbol that indicates the content or target of a process” describes an icon. An icon is a graphic symbol that represents a function or file type, which differs from a thumbnail that displays the actual content of a file at a reduced size.
Incorrectウ
“A character that acts as a user's alter ego on the network” describes an avatar. It refers to a figure that represents a user on social networks or online services, and has nothing to do with a thumbnail, which is a reduced-size image of a file.
Incorrectエ
“Multiple files combined into a single file” describes an archive or archive file (such as ZIP). It is a mechanism for storing and distributing files together, which is a different thing from a thumbnail that displays content at a reduced size.
- A thumbnail is a sample image that displays image or document content at a reduced size, letting you view the content in a list without opening the file.
- Distinguish confusingly similar terms: do not mix it up with an icon (a graphic symbol representing a function), an avatar (an alter-ego character representing a user), or an archive (multiple files combined together).