Which of the following commands is used to set up a RAID volume?

CORRECT TEXT
What is the full path to the directory which contains the scripts (or links to the original scripts) to run while the system boots to SysV-init runlevel 2?

CORRECT TEXT
After a lot of write operations, the administrator want to ensure that the kernel flushes the file system buffers to disk. Which command will accomplish this? (Specify ONLY the command without any path or parameters.)

What is incorrect about these entries in /etc/hosts which could be causing host name lookup problems with host2?
host1 192.168.1.12
host2 192.168.1.12

CORRECT TEXT
After configuring a new kernel, what file under /usr/src/linux/ contains the configuration?