Revision summary
National security now rests on labs and networks as well as troops. DRDO and DAP/Make in India shape conventional inventory; the nuclear triad is a science system. ISRO NavIC, imaging, and SATCOM feed ISR and disaster watch. CERT-In, I4C, and the Defence Cyber Agency are the named cyber rails. Dual-use AI, drones, and biotech multiply both defence and risk.
Model answer
Introduction
National security now depends as much on labs and networks as on battalions. A short discussion must show how science and technology shape deterrence, surveillance, and the civil-military edge.
Body
Conventional and nuclear
- DRDO missiles, sensors, and electronic warfare, and private offsets under Make in India / DAP, decide whether forces fight with imported kits or a domestic inventory.
- The nuclear triad, credible minimum deterrence, and command-and-control rest on physics, materials, and secure communications, not only on doctrine.
Space, cyber, and dual use
- ISRO navigation (NavIC), imaging, and SATCOM give the armed forces weather, targeting, and disaster pictures; a Defence Space Agency sits on that stack.
- CERT-In, the Indian Cyber Crime Coordination Centre (I4C), and the Defence Cyber Agency are the named cyber tools against attacks on power, banks, and C4ISR.
- Dual-use AI, quantum, drones, and biotech cut both ways: they raise border watch and also expand the attack surface.
- Science does not replace trained troops or diplomacy; it multiplies them if procurement and export controls (SCOMET, WMD Act, 2005) keep pace.
Flow diagram
flowchart TD ST[Science technology] --> D[DRDO conventional] ST --> N[Nuclear triad] ST --> I[ISRO NavIC SATCOM] ST --> C[CERT-In I4C cyber] D --> S[National security] N[N] --> S[S] I[I] --> S[S] C[C] --> S[S] U[Dual use AI drone] --> S
Conclusion
Science and technology supply deterrence, ISR, cyber defence, and dual-use edge. DRDO, ISRO, CERT-In, and the nuclear triad are the named pillars; security still fails if the last-mile soldier and the network remain unmatched.
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Next question in the 2022 paper (Q7). View answer →
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Is national security only about nuclear weapons?
No. Conventional sensors, space ISR, and cyber defence are now as decisive in many crises.
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Does Make in India belong in this answer?
Yes, as the industrial-S&T path to reduce import dependence in defence inventory.
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