Describe the major features of 4G LTE.

Describe the major features of 4G LTE.
Describe the major functions for mobile network and device management.
Which layer(s) carry out QoS execution?
What are the Key Performance Indicators (KPIs)?
What is DiffServ Code Point (DSCP)?
Describe the different types of security threats.
Describe the mitigation methods for those security threats.
Why is Cloud security really challenging?