单项选择题
A.重放攻击B.拒绝服务攻击C.中间人攻击D.后门漏洞攻击
A./etc/password、/etc/shadow B./etc/passwd、/etc/ssh/sshd_config C./etc/passwd、/etc/shadow D./etc/passwd、/etc/aliases
A./var/log B./etc/issue C./etc/syslogd D./var/syslog