Operating Systems questions need help

Log on to any machine running Linux. Type cd /proc to change to the /proc directory, and ls to show a directory listing of the virtual files. You can type more to request the contents of a file. Use the files in the /proc filesystem to answer the following questions about the system you have logged on to. For each part, state the answer and which file in the /proc filesystem you used to find the answer.

a) Explain the monolithic kernel approach to OS design. In other words, what is it that makes a kernel monolithic?

b) Explain one advantage and one disadvantage to using monolithic kernel design.

c) Explain the modular kernel approach to OS design.

d) Explain one advantage that the modular approach has over the monolithic approach.