Under the Information Technology Act, 2000, the Indian Computer Emergency Response Team (ICER) does not serve as a national agency for performing which of the following functions ?

Under Section 70B of the Information Technology Act, 2000, the Indian Computer Emergency Response Team (CERT-In) serves as the national agency for cyber security. Its statutory functions include the collection, analysis, and dissemination of information on cyber incidents, forecasting and alerting of cyber security incidents, and the coordination of cyber incident response activities.

Option D is the correct answer because exercising supervision over the activities of the Certifying Authorities is a function assigned to the Controller of Certifying Authorities (CCA) under Section 18 of the IT Act. The CCA is responsible for licensing and regulating Certifying Authorities that issue Digital Signature Certificates, whereas CERT-In focuses on operational cyber security and emergency response.