Technology – Easy Level – GK Questions

CSCs are village-level access points under Digital India that enable delivery of government services, banking, insurance, education, healthcare, and entertainment to rural citizens. They are operated by Village Level Entrepreneurs (VLEs).

Switch is a networking device that connects devices within a LAN and uses MAC addresses to forward data frames only to the intended recipient port. Unlike hubs that broadcast to all ports, switches improve network efficiency and security.

SMS (Short Message Service) is a text messaging service component of most telephone, internet, and mobile device systems. It uses standardized communication protocols to exchange short text messages (up to 160 characters) between devices.

RuPay is India's indigenous card payment scheme developed by NPCI. It offers lower transaction costs, promotes financial inclusion, and is accepted at millions of ATMs and PoS terminals across India. RuPay cards are issued by most Indian banks.

CPU (Central Processing Unit) is the primary component that executes program instructions, performs calculations, and controls other computer parts. Modern CPUs contain multiple cores for parallel processing and cache memory for faster data access.

BharatNet (formerly National Optical Fibre Network) aims to connect all 2.5 lakh gram panchayats with high-speed optical fiber. It is one of the world's largest rural connectivity projects, enabling delivery of e-governance, education, and healthcare services.

Operating System (like Windows, Linux, Android) is system software that manages hardware resources and provides services for application software. Application software (like MS Word, Chrome) runs on top of the OS to perform user-specific tasks.

NPCI (National Payments Corporation of India) developed the Unified Payments Interface (UPI). NPCI also operates other payment systems like IMPS, RuPay, Aadhaar Enabled Payment System (AePS), and Bharat Bill Payment System (BBPS).

Scanner is an input device that captures images, text, or objects and converts them into digital format. Monitor, printer, and speaker are output devices that display or present processed information to the user.

SELECT is the SQL command used to query and retrieve data from one or more tables. INSERT adds new records, UPDATE modifies existing records, and DELETE removes records. SELECT is the most frequently used command in database operations.

Aadhaar is a 12-digit unique identification number issued by UIDAI to Indian residents based on biometric and demographic data. It enables targeted delivery of subsidies and services through Direct Benefit Transfer (DBT) system.

In binary system used by computers, 1 KB = 1024 bytes (2^10). The decimal approximation of 1000 bytes is used by storage manufacturers, causing confusion. IEC standards now use KiB (Kibibyte) for 1024 bytes to avoid ambiguity.

PSLV (Polar Satellite Launch Vehicle) is called ISRO's workhorse due to its reliability in launching earth observation and remote sensing satellites into polar sun-synchronous orbits. It has successfully launched Chandrayaan-1 and Mangalyaan.

RAM (Random Access Memory) is volatile memory used for temporary storage of data and machine code currently being used. It loses all data when power is switched off, unlike ROM or hard disk which are non-volatile.