IPA FE Subject A sample Question 27
A question IPA Japan published in 基本情報技術者試験 科目A サンプル問題 問27, translated into English. ITPEC is based on the same exams.
Which of the following is a standard for attaching image data and other such data to e-mail in an environment where TCP/IP is used?
Explanation
MIME — Multipurpose Internet Mail Extensions, the standard that lets an e-mail carry attachments such as images.
Internet e-mail was designed to carry 7-bit ASCII text only. MIME extends the message format with headers such as Content-Type, splits a message into several parts (multipart), and encodes binary data such as images as text (Base64), so files of any kind can be attached and non-ASCII text can be sent.
Answer (b)
Why not others:
- •(a) — JPEG is a compression format for still images: it may be the format of the attached image, but it is not how the image is attached to mail
- •(c) — MPEG is a compression format for video and audio
- •(d) — SMTP is the protocol that transfers mail between servers; it carries the message but does not define how attachments are built into it
Key rule: SMTP sends mail, POP3 and IMAP4 receive it, MIME formats attachments and non-ASCII content, and S/MIME adds encryption and signatures to MIME.
Networks · 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.