Question $1$

What is a disk partition? $(1$ mark$)$

Question $2$

File and directory attributes $(2$ marks$)$:

A$.$ List the $7$ basic file attributes associated with a file and operating system.

B$.$ List the $6$ operations that you can perform on a directory.

Question $3$

File identification and types $(2$ marks$)$:

A$.$ What is the purpose of the file identifier?

B$.$ How are file types used by the operating system?

Question $4$

Sequential files $(2$ marks$)$:

A$.$ How is data stored in a sequential file.

B$.$ What operations that can be performed on sequential files?

Question $5$

Direct access files $(2$ marks$)$:

A$.$ What operations can be performed on direct access files?

B$.$ What is the function of an index when used with a direct access file?

Question $6$

File Implementation $(3$ marks$)$

A$.$ Describe the purpose of the open$-$file table.

B$.$ What is the difference between a mandatory lock and an advisory lock?

C$.$ How could file sharing could be secured using a file protection scheme?

Question $7$

We have discussed three file allocation techniques for storing a file on disk, namely contiguous allocation, linked allocation, and indexed allocation. For

each allocation method show how a file of $11$ blocks would be allocated on disk. The disk is represented as $30$ blocks with blocks $0,4,9,17$ and $29$ already

allocated. You must show the entire data structure for each allocation method as part of your answer. $(3$ marks$)$