Consider the following application layer services:
- Domain names to $\text{IP}$ Address mapping
- Data communication over the World Wide Web
- Electronic mail transmission
- Retrieve e-mail from a remote server
- Transfer files from one host to another host
Which one of the following order of application layer protocols is correct for the above services?
- $\text{DNS, HTTP, POP, SMTP, FTP}$
- $\text{DNS, HTTP, SMTP, POP, FTP}$
- $\text{DNS, FTP, SMTP, POP, FTP}$
- $\text{HTTP, FTP, POP, SMTP, DNS}$
