Computer Networks Question: which protocol is used for retrieving mails? Computer Networks Interview QuestionAnswer: POP3 and IMAP4 are used to retrieve mails.IMAP4 stores a copy of message on the server whereas POP3 does not. Previous QuestionNext QuestionExplain benefits of VPN? Difference between L2TP and PPTP Protocols?There are four routers and 4 switches and 40 computers in an office. How will you connect each devices and configure those devices?