The National Critical Information Infrastructure Protection Centre (NCIIPC) has identified 'Power & Energy' and 'Banking and Financial services' as critical sectors. These sectors are crucial for national security and economic stability, and their protection is vital to prevent debilitating impacts on the country. The other sectors listed in the options, such as 'Industry', 'Irrigation', and 'Education', are not mentioned as critical sectors by the NCIIPC in the search results. Therefore, the correct answer is option 2, which includes 'Power & Energy' and 'Banking and Financial services' only.