Weba.dns、dhcp、ftpb.telnet、smtp、httpc.bootp、ftp、telnetd.smtp、ftp、udp 单项选择题 在TCP/IP协议集中，应用层的各种服务是建立在传输层所提供服务的基础上实现的，请问，下面哪组协议需要使用传输层的TCP协议建立连接（）。 The File Transfer Protocol (FTP) is a standard communication protocol used for the transfer of computer files from a server to a client on a computer network. FTP is built on a client–server model architecture using separate control and data connections between the client and the server. FTP users may … See more The original specification for the File Transfer Protocol was written by Abhay Bhushan and published as RFC 114 on 16 April 1971. Until 1980, FTP ran on NCP, the predecessor of TCP/IP. The protocol was later replaced by a … See more Communication and data transfer FTP may run in active or passive mode, which determines how the data connection is established. (This sense of "mode" is different … See more HTTP essentially fixes the bugs in FTP that made it inconvenient to use for many small ephemeral transfers as are typical in web pages. FTP has a stateful … See more FTP was not designed to be a secure protocol, and has many security weaknesses. In May 1999, the authors of RFC 2577 listed a vulnerability to the following problems: See more FTP login uses normal username and password scheme for granting access. The username is sent to the server using the USER command, and the password is sent using the PASS … See more Web browser Most common web browsers can retrieve files hosted on FTP servers, although they may not support protocol extensions such as See more FTPS Explicit FTPS is an extension to the FTP standard that allows clients to request FTP sessions to be encrypted. This is done by sending the "AUTH TLS" command. The server has the option of allowing or denying … See more
File Transfer Protocol - Wikipedia
WebThis file transfer protocol is considered unsecure as all data is transferred in clear-text format. SFTP on the other hand, short for secure file transfer protocol, is a comparably better alternative in many respects. ... Both HTTP and FTP use TCP for the data communication protocol. Since HTTP relies on a single persistent connection for ... WebApr 12, 2024 · FTP文件传输服务 一、基本概念 1、FTP连接及传输模式 FTP服务器默认使用TCP协议的20、21端口与客户端进行通信。20端口用于建立数据连接，并传输文件数据；21端口用于建立控制连接，并传输FTP控制命令。2、用户列表文件ftpusers和user_list ftpusers文件：此文件中列出的用户将禁止登录vsftpd服务器，不管该 ... new today telugu
http_tcp_ftp协议书籍-卡了网
Webt tcp tcp事务协议http超文本传送协议unix域协议. 练掌握的四个基本方面: t/tcp(tcp事务协议),这是对tcp的扩展,使客户--服务器间的事务传输更快更有效和更可靠； http(超文本传送协议),这是飞速扩展中的万维网的基础； nntp(网络新闻传送协议),这是usennet新闻系统的基础； unix域协议,这是在unix实现中应用非 WebSep 8, 2005 · FTP itself uses the TCP transport protocol exclusively, or in other words, it never uses UDP for its transport needs. Typically an application layer protocol will use one or the other. One notable exception to that is DNS or Domain Name System. FTP also is odd in the fact that it uses two ports to accomplish its task. WebMay 19, 2024 · FTP (File Transfer Protocol) is the traditional way to transfer files from clients to servers. Invented in the 70s, FTP is a simple way to move files between … new today streaming