Monday, 5 October 2026

NISAR, the joint Earth-observation mission of India and the United States, is distinguished by:

Akash is best described as:

IMT-2030 is associated with:

Consider the following statements about synthetic aperture radar (SAR):

1. 1.It can acquire useful imagery independent of sunlight.
2. 2.It can operate through cloud cover better than optical imaging.
3. 3.It directly measures only visible-light reflectance.

Which of the statements given above are correct?

Consider the following statements:

1. 1.Section 66F of the Information Technology Act deals with cyber terrorism.
2. 2.Section 70 concerns protected systems.
3. 3.Section 70B designates CERT-In as the national agency for incident response.
4. 4.Section 70A concerns the national nodal agency for critical information infrastructure protection.

Which of the statements given above are correct?

Consider the following statements:

1. 1.Hall-effect thrusters accelerate charged particles using electric and magnetic fields.
2. 2.Electric propulsion generally has lower thrust than chemical propulsion.
3. 3.Electric propulsion is therefore unsuitable for any long-duration deep-space mission.

Consider the following pairs:

1. 1.Deposition — adding material layers to a wafer
2. 2.Etching — selectively removing material
3. 3.Ion implantation — introducing dopant ions into semiconductor material
4. 4.Dicing — defining transistor gate oxide thickness by chemical oxidation

Consider the following statements:

1. 1.Quantum Key Distribution (QKD) aims to establish shared cryptographic keys using quantum states.
2. 2.Observation of a quantum state can, under appropriate QKD protocols, reveal eavesdropping through changes in expected statistics.
3. 3.QKD by itself solves endpoint compromise and all forms of cyber insecurity.

Which of the statements given above are correct?

Consider the following pairs:

1. 1.Coastal radar — detection and tracking of surface contacts
2. 2.AIS — vessel identification and navigational data exchange
3. 3.Sonar — detection and characterization of underwater acoustic contacts
4. 4.EO/IR — electro-optical and thermal imagery for identification and tracking

How many pairs are correctly matched?

A counter-insurgency unit operating in difficult forest terrain relies on small-team mobility, local intelligence, specialised jungle training and rapid exploitation of actionable information. Which organisational model does this most closely resemble?