BSNL is not used by :
AIntranet
BInternet
CSubnet
DCIFNET
Answer:
D. CIFNET
Read Explanation:
CIFNET (Central Institute of Fisheries Nautical and Engineering Training): A Central Government training institute functioning under the Union Ministry of Fisheries, headquartered in Kochi. It is not a technical term related to computer networking or telecommunications. BSNL (Bharat Sanchar Nigam Limited): A major Indian telecom provider. Telecom operators utilize and offer networking technologies and services such as Intranet, Internet, and Subnet.