Which of the following commands should a system administrator use to configure a passwordless login to remote system? (Select TWO.)

Question

Options

• ACp
• BSsh-agent
• CSsh-copy-id
• DSsh-keygen
• ESsh-add
• Fopenssl

• A
  2% (1)
• B
  93% (43)
• E
  4% (2)

Explanation

Configuring passwordless SSH login involves two key tools. ssh-copy-id (C) is the primary command that copies a user's public SSH key to the remote server's ~/.ssh/authorized_keys file, which is what directly enables passwordless authentication - the remote server recognizes the key and grants access without prompting for a password. ssh-agent (B) is a background daemon that holds decrypted private keys in memory, so that if keys are protected by a passphrase, users only need to enter it once per session rather than on every connection, effectively making logins 'passwordless' in practice. While ssh-keygen (D) generates the key pair and is a prerequisite step, the question focuses on the configuration of passwordless login itself. cp (A) and openssl (F) are unrelated to SSH key deployment. ssh-add (E) adds keys to a running ssh-agent but is a supporting tool, not the primary configuration command.

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