Consider the following clauses: i. Not inherently suitable for client…
2007
Consider the following clauses: i. Not inherently suitable for client authentication. ii. Not a state sensitive protocol. iii. Must be operated with more than one server. iv. Suitable for structured message organization. v. May need two ports on the serve side for proper operation. The option that has the maximum number of correct matches is
Answer: D. SMTP-(i), HTTP-(ii), IMAP-(iii), DNS-(iv), FTP-(v) — Correct assignments: the intended protocol for each clause and brief justification. Clause i — SMTP: SMTP historically does not require client authentication…
- A.
IMAP-(i), FTP-(ii), HTTP-(iii), DNS-(iv), POP3-(v)
- B.
FTP-(i), POP3-(ii), SMTP-(iii), HTTP-(iv), IMAP-(v)
- C.
POP3-(i), SMTP-(ii), DNS-(iii), IMAP-(iv), HTTP-(v)
- D.
SMTP-(i), HTTP-(ii), IMAP-(iii), DNS-(iv), FTP-(v)
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Correct answer: D
Correct assignments: the intended protocol for each clause and brief justification.
Clause i — SMTP: SMTP historically does not require client authentication by design, so it is not inherently suitable for client authentication.
Clause ii — HTTP: HTTP is a stateless protocol (not state sensitive) unless additional mechanisms (cookies, sessions) are added.
Clause iii — DNS: DNS zones are intended to be served by multiple name servers for redundancy and proper delegation, so DNS must be operated with more than one server.
Clause iv — IMAP: IMAP supports server-side folder/mailbox organization and suits structured message organization.
Clause v — FTP: FTP commonly uses separate control and data connections (different ports), so it may require two ports on the server side.
Why the best choice among the provided options is the entry that reads "SMTP-(i), HTTP-(ii), IMAP-(iii), DNS-(iv), FTP-(v)":
That entry correctly matches SMTP with clause i, HTTP with clause ii, and FTP with clause v (three correct matches).
It misassigns IMAP to clause iii and DNS to clause iv, but no provided option matches all five correctly.
Conclusion: The correct full mapping is SMTP→i, HTTP→ii, DNS→iii, IMAP→iv, FTP→v. Among the given choices, the option that lists SMTP-(i), HTTP-(ii), IMAP-(iii), DNS-(iv), FTP-(v) has the maximum number of correct matches (three), so it is the best available answer.