50. In application layer protocols including HTTP, SMTP, and FTP, what mechanism is usually used to translate the host name provided by the user into an IP address?
(A) FTP
(B) Database
(C) DNS
(D) IMAP
(E) None of the above
詳解 (共 1 筆)
未解鎖
在包括 HTTP、SMTP 和 FTP ...