Telnet提供的服务是（）。
- A.远程登录
- B.电子邮件
- C.域名解析
- D.寻找路由
正确答案及解析
正确答案
解析
Telnet协议提供远程登录服务，它允许本地用户登录到远程主机，将本地用户的输入内容传送到远程主机进行处理。Telnet程序是一种客户端/服务器程序，它在本地系统中生成Telnet应用，并和远程主机上运行的Telnet进程建立TCP连接。本地用户在键盘上发出的请求被送入本地主机上的Telnet客户端程序，然后通过Telnet协议将这个请求传送给远程主机上的Telnet服务器，这样本地用户就直接与远程主机相连了，从本地主机上就可以运行远程主机上的程序。大多数进程是在远程主机上运行的，它从用户的系统接收请求，并在它的工作空间内进行处理，从而减少了网络链路上的通信量。
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