Question $1$

a$.$ Compare and contrast the UMTS $(3$G$)$ and the LTE $(4$G$)$ mobile technologies. $(10$ marks$)$

b$.$ List any Four $(4)$ components of the Public Switched telecommunication Network and describe them. $(10$ marks$)$

c$.$ What is routing and state any three $(3)$ reasons why routing is essential in communication systems. $(5$ marks$)$