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．
④
选项 A、dynamic
B、random
C、symmetric
D、asymmetric
答案C
解析
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