a) POP3
b) SMTP
c) IMAP
d) MAPI
SMTP is the standard protocol for sending emails across the internet whereas POP3 and IMAP are standard protocols for retrieving emails. MAPI is an interface that helps programs become email aware.
a) True
b) False
POP3 is used to access email from only one client. IMAP is used to simultaneously access email from multiple clients.
a) 80
b) 143
c) 993
d) 2525
Port 993 is used by clients to connect using IMAP securely. Port 80 is used by the HTTP protocol, Port 143 is used for non-encrypted IMAP connection and Port 2525 is used by the SMTP protocol.
a) 995
b) 2525
c) 110
d) 143
Port 110 is the default port for non-encrypted POP3. Port 995 is used for secure connection using POP3, Port 2525 is used by SMTP for non-encrypted connection and Port 143 is used for non-encrypted connection by IMAP.
a) 25
b) 110
c) 2525
d) 143
The default port number for SMTP is 25. Port 110 and Port 143 are the default port numbers for POP3 and IMAP respectively. Port number 2525 is used by SMTP when port number 25 is filtered out and the client wishes for a non-encrypted connection.
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