JKSSB Sub Inspector of Police (JKPSI) 2022 — Q90 Solved Answer with Explanation

JKSSB Sub Inspector of Police (JKPSI) — Computer Knowledge — 2022

View the full solved paper: JK PSI 2022

Question

Which one of the following is a standard mail protocol used to receive emails from a remote server to a local email client?

  1. A. SMI
  2. B. POP3 (Correct answer)
  3. C. SNMP
  4. D. UDP

Correct Answer

Option B — POP3

Detailed Solution & Explanation

POP3 (Post Office Protocol version 3) is a standard internet mail protocol used to retrieve email from a mail server to a local email client (such as Outlook or Thunderbird). POP3 downloads emails to your device and typically removes them from the server. It operates on port 110 (or 995 for SSL). SMTP is used for sending email; IMAP is used for accessing email while keeping it on the server; SNMP is a network management protocol; UDP is a transport-layer protocol -- none of these retrieve emails to a local client.