令和8年度 ITパスポート試験問68

This question's explanation and your answers so far.

問68

頻出度★★☆

メールソフトが電子メールの送受信に用いるプロトコルの組合せとして，適切なものはどれか。

出典　令和8年度 ITパスポート試験問68

解説

問 68

Incorrectア
This sets sending to IMAP4 and receiving to POP3, but both IMAP4 and POP3 are receiving protocols, and SMTP, which is used for sending, is not included. The sending side is wrong.
Incorrectイ
Sending IMAP4 and receiving SMTP have the roles reversed. IMAP4 is for receiving and SMTP is for sending, so both are swapped from their proper uses, making this inappropriate.
Incorrectウ
Sending POP3 and receiving SMTP also have the roles reversed. POP3 is for receiving and SMTP is for sending, so the send/receive mapping is inverted, making it wrong.
エ
正解 Email sending uses SMTP (Simple Mail Transfer Protocol), and email receiving uses IMAP4 or POP3. Choice エ has SMTP for sending and IMAP4 for receiving, which correctly matches this division of roles, so it is appropriate. IMAP4 is a receiving protocol that lets you view email while keeping it managed on the server.

ここがポイント

Remember the division of roles: email sending uses SMTP, and email receiving uses POP3 or IMAP4.
IMAP4 is a receiving protocol that can keep and manage email on the server, while POP3 downloads email to the device to receive it.

用語

解答問68エ