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Hi,
Percentile is a way of giving scores popularly used for most of the MBA entrance exams. In statistics, a percentile (or centile) is the value of a variable below which a certain percent of observations fall. For example, 20th percentile is the value (or score) below which 20 percent of the observations may be found. If your percentile is let's say, 80%, it means, 80% of the total number of candidates have scored less than you or you are above 80% of the candidates for that particular score. For MAT, a total score of (marks not percentile) 600 and above is good enough to get admission into a good B-School.
I hope understand the meaning of interpretation.

Ethical hacking is a field in which certified ethical hackers are used by an organization to infiltrate their electronic and computer security systems in order to find and correct flaws, discrepancies, loopholes and vulnerabilities. Certified Ethical Hackers (CEH) uses the same tools and techniques as hackers to identify and correct system weaknesses and vulnerabilities. The duration of the course will vary according to the institute to which you apply. However, it is usually one to six months long. The eligibility criteria for joining any certification course in ethical hacking are the basic prior knowledge of networking (TCP/IP) concepts, database programming and server-side programming (PHP or JSP or ASP.net). The digitization of communication and database systems may be increasing the scope for being a certified ethical hacker, particularly when seen in comparison to the past few decades.
After completing a certification course in ethical hacking, a certified ethical hacker can work in any number of organizations like banks, hotels, airlines, telecom companies, Information Technology Enabled Services (ITES) companies, outsourcing units, retail chains, Internet companies, e-commerce ventures, police departments or government agencies. The need for cyber and system security is present in all these fields and hence ethical hackers.