a file directory contains 50 file entries and occupies one or more disk blocks where the block size is 1000 bytes. approach 1: each directory entry contains a file name of length 10 bytes followed by attributes of length t bytes. approach 2: each directory entry contains a file name of length 10 bytes followed by a pointer of 10 bytes, which points to the attributes of length t bytes in a separate block. (a) with t