$($a$)$ With reference to disk space allocation, write down the advantages of indexed

allocation over contiguous and chained $($linked$)$ allocation.

$(5$ Marks$)$

$($b$)$ With the aid of a diagram, outline the main features of the UNIX block addressing

scheme.

$(12$ Marks$)$

$($c$)$ Name a Linux file system and a windows file system.

$(4$ Marks$)$

$($d$)$ Name four items of information held in a file system$$s superblock? $(4$ Marks$)$