Question

In a particular Unix OS, each data block is of size 1024 bytes, each node has 10 direct data block addresses and three additional addresses: one for single indirect block, one for double indirect block and one for triple indirect block. Also, each block can contain addresses for 128 blocks. Which one of the following is approximately the maximum size of a file in the file system?
A) 512 MB
B) 2 GB
C) 8 GB
D) 16 GB
which is correct ans?explain plz In a particular Unix OS, each data block is of size 1024 bytes, each node has 10 direct data block addresses and three additional addresses: one for single indirect block, one for double indirect block and one for triple indirect block. Also, each block can contain addresses for 128 blocks. Which one of the following is approximately the maximum size of a file in the file system?
A) 512 MB
B) 2 GB
C) 8 GB
D) 16 GB
which is correct ans?explain plz @Computer Science

Answer 1

I think you're talking about the Unix inode pointer structure. It lets a single top-level node address a small file's blocks in little space (with direct pointers) while being able to address all of a *very* large file as well with double and triple indirect blocks.

There's a great picture here: https://en.wikipedia.org/wiki/Inode_pointer_structure