this is naveen kumar student of BCA from ignou I want to join Networking field but i have no idea about it whats the growth in the field

Mr. Naveen networking is also a very good platform. in every company this field needs. anywhere u go u will find this. so i'll suggest u can go with this field. for this purpose there are some institutes provides these courses also provides certificates like CCNA, MCSE etc... and institutes like IIH

than better you join freshers or trainee if possible in any company if not than go for any nearest institute may be not reputed also but just gather 3-6 months knowledge from them.We are at present in IPV4 but now switching very recently IPV6

networking has quite a lot of scope provided you excel in it. you ought to devote more time on practical than theory.