平成29年度春期 ITパスポート試験問68

This question's explanation and your answers so far.

問68

頻出度★★★

FTTHの説明として, 適切なものはどれか。

出典　平成29年度春期 ITパスポート試験問68

解説

問 68

Incorrectア
“A brand name that conforms to wireless communication standards established by IEEE and guarantees interoperability” describes “Wi-Fi,” which concerns wireless LAN. It has nothing to do with FTTH, which is wired access using optical fiber.
Incorrectイ
“A technology that achieves high-speed digital communication using existing analog telephone lines” describes “ADSL.” Because it uses copper wire (metal lines), it differs from FTTH, which runs optical fiber into the home.
Incorrectウ
“A protocol used when transferring files over networks such as the Internet” describes “FTP (File Transfer Protocol).” This is a communication procedure (protocol), so it is a different kind of thing from FTTH, which is a form of physical access-line service.
エ
正解 FTTH stands for “Fiber To The Home.” It refers to a form of access-line service in which the telecommunications carrier runs optical fiber directly into each home to provide high-speed Internet access. Therefore, choice エ, which states “a form of communication service for homes that uses optical fiber,” is exactly this definition and is correct.

ここがポイント

FTTH (Fiber To The Home) is a form of high-speed access-line service for homes that runs optical fiber directly into the home.
Distinguishing confusing terms: Wi-Fi (a brand name for wireless LAN) / ADSL (a high-speed communication technology using telephone lines) / FTP (a file transfer protocol) are each different concepts.

用語

解答問68エ