2. 计算机
  3. Secure Shell(SSH)is a cryptographic network protocol for operating network services securely over an ____①____ network．Typical

Secure Shell(SSH)is a cryptographic network protocol for operating network services securely over an ____①____ network．Typical

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问题 Secure Shell(SSH)is a cryptographic network protocol for operating network services securely over an  ____①____  network．Typical applications include remote command-line，login，and remote command execution，but any network service can be secured with SSH．The protocol works in the ____②____  model，which means that the connection is established by the SSH client connecting to the SSH server．The SSH client drives the connection setup process and uses public key cryptography to veilfy the  ___③_____  of the SSH server.After the setup phase the SSH protocol uses strong  ____④____  encryption and hashing algorithms to ensure the privacy and integrity of the data that is exchanged between the client and server．There are several options that can be used for user authentication．The most common ones are passwords and  ____⑤____  key authentication．
⑤
选项 A、public
B、private
C、static
D、dynamic
答案A
解析 安全外壳协议(SSH)是一种在不安全网络上安全地进行网络服务的加密网络协议。典型的应用包括远端命令行、登录、远端命令执行。任何网络服务都可以用SSH加密。该协议工作在C／S模式下，这意味着由SSH客户端建立与SSH服务器之间的连接。SSH客户端驱动着连接的建立过程，并使用公有密钥来验证SSH服务器的身份。连接建立后，SSH协议使用强对称加密和哈希算法，保证客户端和服务器之间数据交互的私有性和完整性。有多种用户认证方式，最常用的是密码和公有密钥认证。
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