Eligibility Criteria for GATE CSE:

1. Educational Qualification:
- Candidates must have completed a Bachelor's degree in Engineering/Technology or a Master's degree in Science/Computer Applications.
- Those who are in the final year of their qualifying degree are also eligible to apply, provided their degree is completed by the time of admission.

2. Qualifying Degree:
- For the GATE CSE exam, the qualifying degree should be in Computer Science and Information Technology or equivalent.
- Candidates with degrees in other related disciplines may also be eligible, but they should submit a certificate from their institute stating the equivalence of their degree.

3. Age Limit:
- There is no specific age limit for appearing in the GATE exam. Candidates of any age can apply.

4. Nationality:
- Indian nationals, as well as foreign nationals, are eligible to apply for the GATE exam.
- There is no restriction on the nationality of the candidates.

5. Number of Attempts:
- There is no limit on the number of attempts for the GATE exam. Candidates can appear for the exam as many times as they wish.

6. GATE Score Validity:
- The GATE score is valid for three years from the date of announcement of results.
- Candidates can use their GATE score for admissions to postgraduate programs or for recruitment purposes during this validity period.

7. Valid Identity Proof:
- Candidates must possess a valid government-issued identity proof such as Aadhaar card, passport, driving license, PAN card, etc., to be presented during the exam and admission process.

8. Application Process:
- Interested candidates must apply online through the official GATE website.
- The application fee must be paid online using a debit card, credit card, or net banking.

Conclusion:
To be eligible for the GATE CSE exam, candidates must have the required educational qualifications, a qualifying degree in Computer Science and Information Technology or equivalent, and meet the nationality and age requirements. There is no limit on the number of attempts, and the GATE score is valid for three years. Candidates must also possess a valid identity proof and apply online through the official GATE website.