Government & Defence Entrance Exam

Job Profile of Security Assistant in IB:
The security assistant assists the security officer in collecting the information regarding security/law and also order problems. They are also responsible for reporting matters to the police as per the direction of the authorities. They have to carry out patrolling and checking duties during the day and night. As per the present guidelines, the annual IB Security Assistant Salary Package on average will be as per Pay Level 3 of the 7th CPC. The pay scale will be INR 21700 - INR 69100 (Level-3). SCOPE OF PROMOTION:
The candidates who get selected as Security Assistant by the Intelligence Bureau of India will be eligible for promotion which will be done on the basis of their work ethics as well as the skills along with the experience. The candidates who complete the task before the given deadline and also work efficiently and effectively will be eligible to get promoted to the next level. After promotion, candidates are entitled to a higher pay package and better allowances.

There's a list of total Government Exams you can go for after your 12th. SSC Combined Higher Secondary Level SSC CHSL)
Upper Division Clerk (UDC)
Lower Division Clerk (LDC)
Postal Assistant (PA)
Data Entry Operator (DEO)
Sorting Assistant (SA)
SSC Multi Tasking Staff SSC MS)
SSC General Duty Constable SSC GD Exam)
SSC Grade C and Grade D Stenographer SSC Stenographer)
RRB Assistant Loco Pilot RRB ALP)
Railway Group D (RRB/RRC Group D)
Indian Army Exam for the post of Technical Entry Scheme, Mahila Constables, Soldiers, Junior Commissioned Officers for Catering
Indian Navy Exam for the post of Sailor, Artificer Apprentice and Senior Secondary Recruits (SSR)
Security Forces
Border Security Force (BSF)
Central Reserve Police Force (CRPF)
Sashastra Seem Bal (SSB)
Indo-Tibetan Border Police Force (ITBP)
Hope this might help for your future.

Yes, you are eligible for UPSC exam. But there are some eligibility criteria which you need to fulfill in order to appear for UPSC exam. Some I have mentioned below and you can refer to the UPSC notification for detailed information. Nationality for IAS exam: Must be a citizen of India, a person of Indian origin or a subject of Nepal, Bhutan or Tibet settled in India before 1st January 1962. Education Qualification for IAS exam: Candidate must hold a Graduate Degree from a recognised University. UPSC Civil Services Exam Age Limit: Candidate must be a minimum of 21 years of age and must not be more than 32 years of age. Category wise UPSC CSE age limit, relaxation and maximum attempts-
General Category & EWS: 32 years; 6 attempts. OBC (with Certificate 32 years + 3 years; 9 attempts. SC/ST: 32 years + 5 years; unlimited attempts. Physically Disabled: 32 years + 10 years; Gen/OBC/Person with Benchmark Disability (EWS category)- 9 attempts & SC/ST unlimited attempts. Jammu & Kashmir Domicile: 32 years + 5 years + (3 years, if OBC or 5 Years, if SC/ST); Number of attempts depends on the reserved category. Disabled and discharged Defence service personnel: 32 years + 3 years + (3 years, if Gen/OBC or 5 years, if SC/ST)
Ex-Servicemen Commission Officer: 32 years + 5 years + (3 years, if OBC or 5 Years, if SC/ST). .

Hi
The UPSC exam pattern for the Mains stage consists of 9 papers conducted over 5 to 7 days. Only those candidates who secure at least the declared cut off in General Studies I and 33% in General Studies II in Prelims will be allowed to appear for the Mains Examination. The 9 papers in IAS Exam (Mains) are as follows: Paper A (Compulsory Indian Language); Paper B English which are qualifying in nature, while the other papers like Essay, General Studies Papers I, II, III, and IV, and Optional Papers I and II are considered for the final ranking. UPSC Syllabus Civil Services Mains Exam
Paper I: (Essay) 250 Marks. Paper 2: (General Studies 1) 250 Marks. Paper 3: (General Studies 2) 250 Marks. Paper 4: (General Studies 3) 250 Marks. Paper 5: (General Studies 4) 250 Marks. Paper 6: (Optional Subject Paper 1) 250 Marks. Paper 7: (optional subject paper 2) 250 marks.