Câu 1: XK0-004: CompTIA Linux+

A junior Linux administrator is updating local name resolution to support IPv6. The administrator issues the command cat /etc/hosts and receives the following output:127.0.0.1 localhostWhich of the following actions should the administrator perform to accomplish this task?

1. A. Modify the /etc/hosts file, and add the ipv6 localhost entry to the file.
2. B. Modify the /etc/hosts file, and add the ::1 localhost entry to the file. — đáp án hiện tại
3. C. Modify the /etc/hosts file, and add the ipv4 localhost entry to the file.
4. D. Modify the /etc/hosts file, and add the 0.0.0.0 localhost entry to the file.