Q. With reference to the comprehensive overhaul of coastal security architecture undertaken by the Government of India after the 26/11 attacks, which of the following are elements of this plan?

1. A coastal radar surveillance network
2. A chain of automatic identification system (AIS)
3. Raising Special Security for Coastal regions
4. Raising special unit for maritime intelligence

Select the correct option from the codes given below:
Answer: 1, 2, 3 & 4
Notes: After 26/11, India implemented an extensive coastal security architecture, including installation of a coastal radar network, a chain of AIS stations, creation of the Sagar Prahari Bal for coastal security, and specialized maritime intelligence units like NC3I(N). All four measures are officially recognized components of India's renewed coastal security strategy post-2008.