Which configuration file is typically used for SSH client settings on a Linux system?

The configuration file that is typically used for SSH client settings on a Linux system is the file found at /etc/ssh/ssh_config. This file contains system-wide settings for the SSH client, allowing users to customize their SSH connections, such as defining default behaviors and specifying options like user names, connection timeouts, and authentication methods.

The ssh_config file applies to all users on a system unless overridden by individual user-specific configurations found in the user's home directory at ~/.ssh/config. The ability to centralize SSH client settings in the /etc/ssh/ssh_config file simplifies management and can ensure consistent behavior across all users on the machine.

Other options, such as the /etc/ssh/sshd_config file, are used for configuring the SSH server rather than client settings. The other two options listed are not standard or commonly used locations for SSH client configurations on Linux systems. Therefore, /etc/ssh/ssh_config is the proper answer for the question about SSH client settings.