Race condition is not possible when updating a file.

$1)$True; race condition is only possible with shared data and variables.

$2)$False; when multiple processes are updating the same file concurrently this will cause a race condition. It is however handled in the OS because file updates occur

through system calls.

$3)$False; when multiple processes are updating the same file concurrently this will cause a race condition. Must be handled by the user.