Which keystroke combination allows users to move the cursor to the beginning of the command line without deleting text?

`Ctrl + u` typically deletes all characters from the current cursor position back to the beginning of the line.

`Ctrl + w` typically deletes the word immediately preceding the cursor's current position.

The `Ctrl + a` keystroke combination is a standard command-line editing shortcut, universally recognized across many Unix-like environments and implemented in the Junos CLI, which repositions the cursor to the start of the current input line without affecting the text.

`Ctrl + b` typically moves the cursor backward by one character, not to the beginning of the entire line.