please show the answer step by step. Thanks.

1. Here are two file allocation methods, answer the following questions.

1) Compared with Fig 2, the method in Fig 1 has a major problem. What is that and why it can be avoided in Fig 2.

2) Briefly list the advantages and disadvantages of these two methods.

3) What is internal fragmentation, where will it happen?

File allocation table File name Start block Length NNY File allocation table File name Start block Length File A File B File File D File E Fle 5 File E File D Fig 1 Fig 2