A- Please answerOnly Two of the following questions that are related to the file system:
1- In table format, compare between online backup and back up cycle methods in terms of basic idea, advantages, and disadvantages.
2- In table format, discuss the advantages, disadvantages, and the performance of the bit map space management approach when it is used for the main memory and the disk.
3- In table format, compare between the contiguous allocation and the I-nodes file implementation approaches in terms of basic idea, advantages, and disadvantages.
B- What is file system reliability? Explain the roles of error handling, back up, and file checker methods in supporting the file system reliability?
C-A file system checker has built up its counters as shown next:
|
Block#
|
1
|
2
|
3
|
4
|
5
|
6
|
7
|
8
|
9
|
10
|
11
|
12
|
13
|
14
|
15
|
16
|
|
In-use
|
1
|
0
|
1
|
0
|
1
|
1
|
1
|
3
|
1
|
0
|
1
|
1
|
1
|
1
|
0
|
1
|
|
Free
|
0
|
2
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
1
|
0
|
0
|
0
|
1
|
1
|
0
|
Discuss ALL the errors shown in the above counters and the corresponding solutions.