Answer the following questions briefly.
a. What is information technology?
b. How would you differentiate between information technology, computer science and software engineering?
c. List some of the advantages and disadvantages of information technology.
Convert the following numbers from a given number system to the required number system. 
For example: (67)8è(?)16 means convert 67 from base 8 number system to base 16 number system.
a. (104E)16 è(?)3