GCIA · Question #17
What are the limitations of the POP3 protocol? Each correct answer represents a complete solution. Choose three.
The correct answer is A. E-mails can be retrieved only from the Inbox folder of a mailbox. E-mails stored in any other folder B. It is only a retrieval protocol. It is designed to work with other applications that provide the ability to C. It does not support retrieval of encrypted e-mails. POP3 has key limitations: it only accesses the Inbox folder, it is a retrieval-only protocol, and it has no support for encrypted email retrieval.
Question
What are the limitations of the POP3 protocol? Each correct answer represents a complete solution. Choose three.
Options
- AE-mails can be retrieved only from the Inbox folder of a mailbox. E-mails stored in any other folder
- BIt is only a retrieval protocol. It is designed to work with other applications that provide the ability to
- CIt does not support retrieval of encrypted e-mails.
- DIt uses less memory space.
How the community answered
(19 responses)- A79% (15)
- D21% (4)
Why each option
POP3 has key limitations: it only accesses the Inbox folder, it is a retrieval-only protocol, and it has no support for encrypted email retrieval.
POP3 (RFC 1939) is designed to access only the INBOX folder on a mail server; messages stored in other server-side folders such as Sent, Drafts, or custom folders are completely inaccessible via the POP3 protocol.
POP3 is solely a mail retrieval protocol and includes no mechanism for composing or sending messages; it must be paired with SMTP for outgoing mail, making it functionally incomplete on its own.
POP3 has no built-in capability to handle end-to-end encrypted messages such as S/MIME or PGP-encrypted emails; decryption must be performed by the client application after the message is downloaded.
Using less memory space is an advantage of POP3 (because it downloads and removes messages from the server), not a limitation of the protocol.
Concept tested: POP3 protocol limitations and design constraints
Source: https://www.rfc-editor.org/rfc/rfc1939
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