The root id is set so that direct login is disabled. Information must be reviewed relating to when root access was obtained. In which of the following files is this information located?（）
- A、 /var/adm/sulog
- B、 /var/adm/wtmp
- C、 /etc/security/user
- D、 /etc/security/failedlogin
正确答案:A
答案解析:有
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