哪个 /etc/hosts 条目会将 myhost.example.com 映射到 192.168.1.100？
/etc/hosts
myhost.example.com
192.168.1.100
192.168.1.100 myhost.example.com
myhost.example.com 192.168.1.100
127.0.0.1 myhost.example.com
nameserver myhost.example.com