By whether the same key is used for both encryption and decryption (symmetric key algorithms), or if a different key is used for each (asymmetric key algorithms). If the algorithm is symmetric, the key must be known to the recipient and sender and to no one else.
Estimated GPA Requirements. You will need very good grades in high school to get into University of Southern California. The average high school GPA of the admitted freshman class at University of Southern California was 3.73 on the 4.0 scale indicating that primarily A- students are accepted and ultimately attend. Meeting these GPA requirements is not enough to gain admission as USC is a very selective school.
Admission. UCLA is the most applied-to university in the nation. For the fall of 2015, more than 92,000 freshman applications were received. The average GPA for admitted incoming freshmen is 4.39, with an SAT score between 1940 and 2240. 96% of freshmen live in university housing. 52% of UCLA undergraduates receive some sort of financial assistance.