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Generate QuizTechnology – Medium Level – GK Questions
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VoLTE stands for Voice over Long Term Evolution and enables HD voice calls over 4G networks.
- True
- False
Answer: True
VoLTE (Voice over LTE) allows voice calls to be transmitted as data packets over 4G networks, enabling faster call setup, HD voice quality, and simultaneous voice+data usage. Unlike traditional calls that drop to 2G/3G, VoLTE maintains 4G connectivity throughout the call.
A type of attack where hackers intercept communication between two parties without their knowledge is called ________-in-the-Middle attack.
- Accountability
- Man
- P4 / Programmable
- Central
Answer: Man
Man-in-the-Middle (MitM) attack occurs when attackers secretly relay and possibly alter communication between two parties who believe they are directly communicating. Prevention includes using HTTPS, VPNs, certificate pinning, and avoiding public Wi-Fi for sensitive transactions.
Which satellite series is used for Earth observation and remote sensing in India?
- INSAT
- GSAT
- CARTOSAT
- IRNSS
Answer: CARTOSAT
CARTOSAT series satellites are dedicated to Earth observation and remote sensing with high-resolution cameras for cartography, urban planning, and resource monitoring. INSAT is for communication/weather, GSAT for communication, and IRNSS/NavIC for navigation.
Cache memory is slower than main RAM but faster than CPU registers.
- True
- False
Answer: False
Cache memory is FASTER than main RAM but SLOWER than CPU registers. Speed hierarchy: CPU Registers (fastest) > L1 Cache > L2 Cache > L3 Cache > RAM > SSD > HDD (slowest). Cache stores frequently accessed data to reduce CPU wait time and improve system performance.
IPv6 addresses are 128-bit long, compared to 32-bit for IPv4.
- True
- False
Answer: True
IPv6 uses 128-bit addresses (e.g., 2001:0db8:85a3::8a2e:0370:7334) providing approximately 3.4×10^38 unique addresses, solving IPv4 exhaustion. IPv4 uses 32-bit addresses (e.g., 192.168.1.1) allowing ~4.3 billion addresses. IPv6 also offers improved security and auto-configuration.
Which SQL clause is used to filter groups after aggregation?
- WHERE
- HAVING
- GROUP BY
- ORDER BY
Answer: HAVING
HAVING clause filters results after GROUP BY aggregation, while WHERE filters rows before grouping. Example: SELECT dept, AVG(salary) FROM emp GROUP BY dept HAVING AVG(salary) > 50000. WHERE cannot be used with aggregate functions directly.
Which technology enables mobile payments by tapping a smartphone near a payment terminal?
- Bluetooth
- NFC
- Wi-Fi Direct
- Infrared
Answer: NFC
NFC (Near Field Communication) enables contactless payments by allowing two devices to communicate when placed within 4 cm. Used in Google Pay, Apple Pay, and RuPay Contactless. It operates at 13.56 MHz and supports secure element storage for payment credentials.
Which Digital India initiative focuses on transforming government services through electronic delivery?
- e-Kranti
- Make in India
- Skill India
- Start-up India
Answer: e-Kranti
e-Kranti (National e-Governance Plan 2.0) is a pillar of Digital India focusing on electronic delivery of government services across sectors like education, health, agriculture, and justice. It emphasizes integrated services, cloud adoption, and mobile-first approach for citizen convenience.
The technology that creates fully immersive digital environments replacing the real world is called ________ Reality.
- Compressed Air Energy / CAES
- Virtual
- Machine
- Cellular / Biological
Answer: Virtual
Virtual Reality (VR) creates simulated 3D environments that users can interact with using headsets and controllers. Unlike AR which augments reality, VR completely replaces the physical world. Applications include gaming, training simulations, virtual tours, and therapeutic uses.
Gaganyaan is India's first human spaceflight mission planned by ISRO.
- True
- False
Answer: True
Gaganyaan is ISRO's ambitious human spaceflight program aiming to send Indian astronauts (Gagannauts) to low Earth orbit (~400 km) for 3-7 days. The mission uses GSLV Mk III rocket and includes multiple uncrewed test flights before the crewed mission, targeted for 2025-26.
Retail CBDC can coexist with commercial bank deposits without causing significant disintermediation.
- True
- False
Answer: True
CBDC design can include holding limits, tiered remuneration, and intermediation models to preserve bank deposit role. Critical for financial stability while enabling digital payment innovation.
Which Indian authority monitors crypto transactions for suspicious activity reporting?
- RBI
- SEBI
- FIU-IND
- CERT-In
Answer: FIU-IND
Financial Intelligence Unit-India (FIU-IND) receives, analyzes, and disseminates financial intelligence including crypto transactions. VASPs must register and report suspicious activities under PMLA.
The CBDC pilot testing cross-border payments with other central banks is called ________ Pilot.
- Events / Messages
- mBridge / Multi-CBDC
- Index / GCI
- Demand Assigned Multiple / DAMA
Answer: mBridge / Multi-CBDC
Multi-CBDC platforms (mBridge, Project Dunbar) test cross-border settlements using interoperable digital currencies. Aims to reduce cost, time, and intermediaries in international payments.
Which mechanism ensures carbon credits represent real emission reductions?
- Additionality Testing
- Baseline Methodology
- Third-party Verification
- All of these
Answer: All of these
Carbon credit integrity: additionality proves reductions beyond business-as-usual; robust baselines define counterfactual; independent verification ensures accuracy. Critical for market credibility.
The technology that uses AI to optimize electric vehicle charging based on grid conditions is called ________ Charging.
- Transparency
- Smart / V2G
- Diversity
- Vector
Answer: Smart / V2G
Smart charging: AI optimizes EV charging timing based on grid load, renewable availability, electricity prices. V2G enables bidirectional flow for grid services. Critical for sustainable mobility integration.
Which practice reduces cloud computing emissions by scheduling workloads during renewable energy peaks?
- Carbon-Aware Computing
- Green Scheduling
- Both A and B
- Neither
Answer: Both A and B
Carbon-aware computing: schedule batch jobs when grid renewable fraction is highest, use geographic load balancing to low-carbon regions. Critical for sustainable cloud operations.
Voluntary carbon markets require third-party verification to ensure credit quality.
- True
- False
Answer: True
Credible voluntary markets: independent verification of emission reductions, adherence to standards (Verra, Gold Standard), transparent registries. Critical for corporate ESG credibility and climate finance.
Which technology enables real-time monitoring of urban air quality for pollution control?
- IoT Sensor Networks
- Satellite Remote Sensing
- AI Analytics
- All of these
Answer: All of these
Urban air quality monitoring: IoT sensors for hyperlocal data, satellites for regional patterns, AI for source attribution and forecasting. Critical for public health and environmental policy.
The process of producing rocket fuel from lunar water ice is called ________ Production.
- Privacy / Anonymity
- Situ / ISRU
- Propellant / ISRU
- Effectiveness / PUE
Answer: Propellant / ISRU
In-situ propellant production: electrolyze lunar water ice into hydrogen/oxygen for rocket fuel. Enables lunar refueling depot for deep space missions, reducing Earth launch mass requirements.
Which technology enables high-capacity satellite backhaul for 5G networks?
- HTS
- Ka-band
- Both A and B
- Neither
Answer: Both A and B
High-Throughput Satellites (HTS) with Ka-band provide 100+ Gbps capacity for 5G backhaul in remote areas. Critical for bridging digital divide and supporting mobile network expansion.