Which of the following file systems is used by both CD and DVD?

In Linux, which of the following files describes the processes that are started up during boot up?

Normally, RAM is used for temporary storage of data. But sometimes RAM data is stored in the hard disk, what is this method called?

Peter, an expert computer user, attached a new sound card to his computer. He then restarts the computer, so that the BIOS can scan the hardware changes. What will be the memory range of ROM that the BIOS scan for additional code to be executed for proper working of soundcard?

Which of the following is described in the following statement?
"It is a 512 bytes long boot sector that is the first sector of a default boot drive. It is also known as Volume Boot Sector, if the boot drive is un-partitioned. "