India's Advanced Weather Prediction Capabilities

Statement 1 is Correct: A primary objective of the Bharat Forecast System (BFS) is to generate hyper-local, highly accurate weather forecasts down to the Panchayat cluster level (village and block level) to aid rural communities, agriculture, and disaster management. It operates on an ultra-fine 6 km x 6 km grid (upgraded from India's previous 12 km resolution models), making it the highest-resolution operational global weather model currently used by any national meteorological agency in the world. Statement 2 is Incorrect: The Bharat Forecast System was indigenously developed by the Indian Institute of Tropical Meteorology (IITM), Pune, which is an autonomous institute under the Ministry of Earth Sciences (MoES). It was not developed by IIT Delhi. The model is powered by advanced High-Performance Computing (HPC) systems, specifically the new 'Arka' supercomputer at IITM Pune and 'Arunika' at NCMRWF Noida. Therefore, option A is the correct answer.

✅ Statement I: Correct
*GAGAN is an Indian SBAS developed by ISRO and AAI to enhance GPS accuracy and integrity, crucial for aviation safety.* ✅ Statement II: Correct
*It improves GPS reliability and accuracy, enabling better air traffic management and safer, efficient navigation.* ❌ Statement III: Incorrect
*GAGAN’s benefits extend beyond aviation to railways, roadways, maritime, agriculture, and disaster management.* Correct Answer: Only Statements I and II are correct.

Statement 1 is Correct: At their core, Large Language Models (LLMs) function by analyzing input context and calculating a statistical probability distribution for the next possible words (tokens) in a sequence. In their most basic form of text generation (known as "greedy decoding"), they pick the word with the absolute highest probability. While standard applications often introduce controlled randomness (stochastic sampling like *top-k* or *temperature scaling*) to make text more creative, the foundational mechanism relies on assigning probabilities to select the next word. Statement 2 is Correct: LLM training relies heavily on mathematical optimization. Algorithms such as Stochastic Gradient Descent and backpropagation are used to iteratively adjust billions of model parameters. The explicit goal of this process is to minimize a "loss function," which mathematically represents the model's prediction errors compared to the actual training data. Statement 3 is Incorrect: LLMs do not produce inherently unbiased outputs. Because they learn from massive, human-generated datasets scraped from the internet, they are well-documented to inherit, reflect, and sometimes amplify historical and societal biases (e.g., gender, racial, or cultural stereotypes) present in their training data. Therefore, the correct option is B.

GPS, or Global Positioning System, is a satellite-based navigation system that provides geolocation and time information to a GPS receiver anywhere on or near the Earth. It has a wide range of applications. Statement 1 is correct. GPS is used in mobile phones for various purposes such as location tracking, navigation, and location-based services. Statement 2 is correct. GPS is used in banking operations for ATM location services and for time-stamping transactions, which is crucial for maintaining accurate records. Statement 3 is correct. GPS is used for time-stamping power system measurements, which is vital for grid stability and synchronization. Therefore, GPS technology can be used in all the three areas mentioned.

The scenario described involves various devices (smartphone, geyser, smart mirror, refrigerator, car, etc.) communicating with each other and with the user, and automatically performing tasks based on certain triggers. This is characteristic of the Internet of Things (IoT). Option B is correct: Internet of Things (IoT) is a system of interrelated computing devices, mechanical and digital machines, objects, animals or people that are provided with unique identifiers (UIDs) and the ability to transfer data over a network without requiring human-to-human or human-to-computer interaction. Option A is incorrect: Border Gateway Protocol is a protocol used to exchange routing information across the internet and is not relevant to the scenario described. Option C is incorrect: Internet Protocol is a set of rules for sending and receiving messages at the Internet address level, but it doesn't cover the broad range of device intercommunication described in the scenario. Option D is incorrect: A Virtual Private Network is a technology for using the internet or another intermediate network to connect computers to isolated remote computer networks that would otherwise be inaccessible, which also doesn't fit the scenario.