Certification

CISCO certification are well recongnised certifications which can help candidates to have long term well paid career. CISCO offers five levels of network certification: Entry, Associate, Professional, Expert and Architect, the highest level of accreditation within the Cisco Career Certification program. You may refer to following link for details of all CISCO certifications: http://www.cisco.com/c/en/us/training-events/training-certifications/certifications.html#~Cert. CISCO also has specialist certifications. The specialist designation certifies the specific expertise of technical professionals, including those with Cisco Career Certifications at the associate, professional or expert levels. By earning specialist certifications, network professionals can enhance their core networking knowledge in technologies such as security, data center or video. You can start with CCENT and the CCT certifications to start career as a networking professional.

You will get MMS degree from Mumbai University. Whether it is the right place for you or not, depends on your score, and which other colleges are you getting admission in. If you were getting in top 4 colleges like JBIMS, Sydenham, K.J or Welingkar then definitely those are better places than ADMI. But if you dont want to repeat the CET or you want to pursue MMS this year itself, then ADMI isnt a bad choice either.
The placements here generally offer a average package of 4.5 L pa. The faculty is good and visiting faculties are a class apart. The advantage is you get to be on Mumbai University campus where you can attend many events and conferences organised by other departments like economics, statistics, languages and get a better exposure and networking opportunities. The disadvantages are being a government institute the infrastructure or the overall pace of getting things done is a little slow. So choose wisely.