Electronic mail uses which Application layer protocol?
Correct answer: A. SMTP
- A. SMTP
- B. HTTP
- C. FTP
- D. SIP
Explanation
Simple Mail Transfer Protocol (SMTP) is the standard application layer protocol for sending email messages between servers. It defines the format of email messages and the communication procedures between email servers. When you send an email from your mail client, it uses SMTP to send the email to your email provider's server. The email provider's server then uses SMTP to forward the email to the recipient's email server.
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Networking covers LAN, MAN, WAN and wireless networks, network topologies, transmission media, devices such as switches, routers and modems, and the OSI and TCP/IP models. Internet concepts include IP addresses, DNS, URLs, web browsers, email, protocols such as HTTP, HTTPS, FTP and SMTP, and basic network security.
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