Consider the following application layer services:
(a) Domain names to IP Address mapping
(b) Data Communication over World Wide Web
(c) Electronic mail transmission
(d) Retrieve e-mail from a remote server
(e) Transfer files from one host to another host
Which one of the following order of application layer protocols is correct for the above services?
1
HTTP, FTP, POP, SMTP, DNS
2
DNS, HTTP, POP, SMTP, FTP
3
DNS, HTTP, SMTP, POP, FTP
4
DNS, FTP, SMTP, POP, FTP