We can become OCA and OCP very soon by attending the OCA/OCP programme with Koenig, because Koenig has long time Oracle Gurus who can help the participants quickly become one. We can become OCA by passing exam for Introduction to SQL and 11G Administration 1, We can become OCP by passing all 3 exams for Introduction to SQL , 11G Administration 1 and 11g Administration 2.
No, Latest is 12C but 11G will be supported by Oracle till 2018
Yes but only 1 and it can be any official training.
Yes it may be possible if the knowledge is excellent and you pass the interview.