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Answer: e-Sign / Aadhaar e-KYC
e-Sign enables Aadhaar-based digital signatures for documents, with legal validity under IT Act. Uses OTP/biometric authentication. Eliminates need for physical signatures in government/business processes. Critical for digital transaction and e-governance questions.
Answer: Physical Tampering
IoT devices are often deployed in accessible locations, vulnerable to physical tampering, theft, or environmental attacks. Requires hardware security modules, secure boot, and tamper-evident designs. Critical for IoT security architecture questions.
Answer: True
Large Language Models generate plausible text but can 'hallucinate' incorrect facts, especially for niche topics. Mitigation: retrieval-augmented generation (RAG), fact-checking layers, and human oversight. Critical for responsible AI deployment questions.
Answer: Circular
Circular Economy minimizes waste through: design for durability, reuse, repair, remanufacturing, and recycling. Contrasts with linear 'take-make-dispose' model. India's Circular Economy Roadmap targets resource efficiency. Critical for sustainable development questions.
Answer: DigiLocker
DigiLocker enables citizens to store/share government-issued documents (license, certificates) digitally. Documents have legal validity under IT Act. Integrates with Aadhaar for authentication. Critical for paperless governance and digital inclusion questions.
Answer: True
LoRaWAN (Long Range Wide Area Network) enables km-range communication with years of battery life. Ideal for smart agriculture, utilities, and asset tracking. Trade-off: low data rate vs long range. Critical for LPWAN technology questions.
Answer: Object Detection
Object Detection identifies AND locates multiple objects with bounding boxes (YOLO, R-CNN). Image Classification assigns single label; Semantic Segmentation labels each pixel. Critical for autonomous vehicles, surveillance, and medical imaging applications.
Answer: 6G
6G research targets: terahertz spectrum (0.1-10 THz), AI-native networks, integrated sensing-communication, and holographic experiences. India's 6G vision document (2023) outlines research priorities. Critical for understanding telecom evolution roadmap questions.
Answer: All of these
Carbon tracking combines: IoT sensors (emission data), blockchain (immutable records), and AI (pattern analysis) for end-to-end footprint visibility. Enables carbon accounting, offset verification, and sustainable sourcing. Critical for ESG and climate governance questions.
Answer: True
UPI's success led to international linkages: PayNow-UPI (Singapore), UPI-PayNow (UAE), and discussions with France, UK. NPCI International promotes UPI-like systems globally. Represents India's leadership in digital public infrastructure and fintech innovation.
Answer: Data Processing Near Source
Edge computing processes data close to IoT devices/sensors, reducing round-trip latency to cloud. Critical for autonomous vehicles, industrial automation, and AR/VR. Complements cloud for hierarchical processing. Key for distributed systems architecture questions.
Answer: Supervised
Supervised Learning uses labeled datasets (input-output pairs) to train models for classification or regression. Examples: spam detection, price prediction. Contrasts with unsupervised (pattern discovery) and reinforcement (reward-based) learning. Fundamental for AI/ML exam questions.
Answer: True
Direct Air Capture (DAC) uses chemical processes to extract CO2 from ambient air for storage or utilization. Complements emission reduction for net-zero goals. India is developing DAC roadmap under National Carbon Capture Program. Critical for climate tech questions.
Answer: Account Aggregator
Account Aggregator framework enables consent-based financial data sharing between institutions. Users control data flow via AA apps. Part of India Stack's layered DPI: identity (Aadhaar), payments (UPI), data sharing (AA), documents (DigiLocker). Critical for digital governance questions.
Answer: MQTT
MQTT (Message Queuing Telemetry Transport) is a publish-subscribe protocol optimized for low-bandwidth, high-latency IoT networks. Uses minimal overhead, supports QoS levels, and works over TCP/IP. Critical for IoT architecture and industrial automation questions.
Answer: True
NLP combines linguistics and AI for tasks: translation, sentiment analysis, chatbots, summarization. Transformer models (BERT, GPT) revolutionized NLP with attention mechanisms. Critical for AI applications in governance, customer service, and accessibility questions.
Answer: Both A and B
Both GANs (Generative Adversarial Networks) and Diffusion Models (DALL-E, Stable Diffusion) generate images from text. GANs use generator-discriminator competition; diffusion models iteratively denoise random noise. Critical for understanding generative AI applications in creative industries and exams.
Answer: Ka-band
Ka-band (26.5-40 GHz) offers high bandwidth for satellite broadband, earth observation data downlink, and inter-satellite links. Challenges: rain attenuation, requiring adaptive coding. Critical for satellite communication and space infrastructure questions.
Answer: True
Green hydrogen (electrolysis using renewables) stores energy chemically for days/weeks, convertible to electricity via fuel cells or turbines. Complements batteries (short-duration) for seasonal storage. India's National Green Hydrogen Mission targets this application.
Answer: Vibration-to-Electricity Conversion
Piezoelectrics generate voltage when mechanically stressed, enabling energy harvesting from vibrations (machinery, footsteps, vehicles). Powers wireless sensors, wearables. India researches at IITs and DRDO. Critical for IoT and sustainable energy questions.