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Which attack involves overwhelming a server with traffic to make it unavailable to legitimate users?
- Phishing
- Man-in-the-Middle
- DDoS
- SQL Injection
Answer: DDoS
DDoS (Distributed Denial of Service) attack uses multiple compromised systems to flood a target server with traffic, exhausting resources and making services unavailable. Mitigation includes traffic filtering, rate limiting, and using DDoS protection services.
What does 'SMS' stand for in mobile communication?
- Simple Message Service
- Short Message Service
- Secure Messaging System
- Standard Mobile Signal
Answer: Short Message Service
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.
Which memory type is fastest in a computer system?
- RAM
- Cache
- Hard Disk
- Register
Answer: Register
Registers are the fastest memory type, located inside the CPU, used for immediate data processing. Cache is next fastest (L1/L2/L3), followed by RAM, then storage devices (SSD/HDD). Speed hierarchy: Registers > Cache > RAM > SSD > HDD.
Which technology enables physical objects to connect and exchange data over the internet?
- AI
- IoT
- VR
- AR
Answer: IoT
IoT (Internet of Things) refers to network of physical devices embedded with sensors, software, and connectivity to collect and exchange data. Applications include smart homes, industrial automation, healthcare monitoring, and smart cities.
Which data structure follows Last-In-First-Out (LIFO) principle?
- Queue
- Array
- Stack
- Linked List
Answer: Stack
Stack is a linear data structure that follows LIFO principle - the last element added is the first to be removed. Operations include push (add) and pop (remove). Used in function call management, expression evaluation, and undo mechanisms.
Which initiative aims to provide high-speed internet connectivity to all gram panchayats in India?
- PM-WANI
- BharatNet
- Digital Saksharta Abhiyan
- e-Kranti
Answer: BharatNet
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.
Which generation of mobile technology first introduced packet-switched data transmission?
- 1G
- 2G
- 3G
- 4G
Answer: 2G
2G (specifically GPRS/EDGE enhancements) introduced packet-switched data transmission, enabling always-on internet access and efficient data usage. 1G was analog voice only; 3G improved data speeds; 4G introduced all-IP architecture with higher bandwidth.
What does 'HTTPS' in a website URL indicate?
- High-speed Transfer Protocol
- Hyper Text Transfer Protocol Secure
- Hosted Transfer Protocol System
- Hardware Tested Protocol Standard
Answer: Hyper Text Transfer Protocol Secure
HTTPS indicates that communication between browser and website is encrypted using SSL/TLS protocols. This protects data from eavesdropping and tampering. Users should look for the padlock icon and 'https://' when entering sensitive information online.
Which technology uses quantum mechanical phenomena like superposition and entanglement for computation?
- Cloud Computing
- Quantum Computing
- Edge Computing
- Fog Computing
Answer: Quantum Computing
Quantum Computing uses qubits that can exist in superposition (0 and 1 simultaneously) and entanglement (correlated states) to solve certain problems exponentially faster than classical computers, with applications in cryptography, drug discovery, and optimization.
Which of the following is an input device?
- Monitor
- Printer
- Scanner
- Speaker
Answer: Scanner
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.
Which ISRO mission was India's first interplanetary mission to Mars?
- Chandrayaan-1
- Mangalyaan
- Aditya-L1
- GSAT-6A
Answer: Mangalyaan
Mangalyaan (Mars Orbiter Mission), launched in 2013, made India the first Asian nation and fourth space agency globally to reach Mars orbit. It was completed at a cost of just $74 million, making it one of the least expensive Mars missions.
Which SQL command is used to retrieve data from a database?
- INSERT
- UPDATE
- SELECT
- DELETE
Answer: SELECT
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.
Which of the following is a symmetric encryption algorithm?
- RSA
- AES
- ECC
- Diffie-Hellman
Answer: AES
AES (Advanced Encryption Standard) is a symmetric algorithm using the same key for encryption and decryption. RSA, ECC, and Diffie-Hellman are asymmetric algorithms using public-private key pairs. AES is widely used for securing sensitive data.
Which protocol is used to convert domain names like 'google.com' into IP addresses?
- HTTP
- FTP
- DNS
- SMTP
Answer: DNS
DNS (Domain Name System) translates human-readable domain names into numerical IP addresses that computers use to identify each other on the network. Without DNS, users would need to remember IP addresses like 142.250.189.206.
Which ISRO launch vehicle is known as the 'workhorse of India' for launching satellites into polar orbits?
- GSLV Mk III
- PSLV
- ASLV
- SSLV
Answer: PSLV
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.
Which component is known as the temporary memory of a computer that loses data when power is turned off?
- ROM
- Hard Disk
- RAM
- Cache
Answer: RAM
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.
When answering DPSP-related questions in UPSC Mains, candidates should structure responses to demonstrate:
- Only factual recall of DPSP articles
- Conceptual clarity, case study application, contemporary relevance, critical analysis, and balanced solutions
- Only criticism of DPSP non-justiciability
- Only historical evolution without present-day application
Answer: Conceptual clarity, case study application, contemporary relevance, critical analysis, and balanced solutions
High-scoring DPSP answer structure (UPSC Mains): (a) Conceptual clarity: Define DPSP classification (socialist, Gandhian, liberal-intellectual), non-justiciability with moral force, FR-DPSP balance — foundational concepts, (b) Case study application: Illustrate principles with examples: (i) Minerva Mills (FR-DPSP balance, basic structure), (ii) Unnikrishnan (right to education), (iii) MC Mehta (environmental protection), (c) Contemporary relevance: Link to current issues: (i) Digital governance (privacy, inclusion), (ii) Climate justice (environmental rights), (iii) Intersectionality (compounded discrimination), (d) Critical analysis: Evaluate strengths (transformative potential, policy guidance) and challenges (implementation gaps, resource constraints, federal coordination), (e) Balanced solutions: Propose reforms: (i) Strengthening institutional capacity for DPSP implementation, (ii) Enhancing federal coordination through Inter-State Council, NITI Aayog, (iii) Promoting rights-based, inclusive policy design reflecting DPSP values, (f) This structure demonstrates: analytical depth, applied knowledge, contemporary awareness, critical thinking, solution orientation — key markers for high scores in GS-II and Essay papers. Illustrates strategic answer writing: depth over breadth, application over rote, balance over extremism. Essential for UPSC Mains answer excellence.
For last-minute revision of DPSP for competitive exams, aspirants should prioritize:
- Memorizing article numbers verbatim
- Key concepts (classification, non-justiciability, FR-DPSP balance), landmark cases (Minerva Mills, Unnikrishnan, MC Mehta), contemporary applications (digital rights, climate justice, intersectionality), and balanced analytical framework
- Only recent political controversies without constitutional basis
- Only historical evolution without contemporary application
Answer: Key concepts (classification, non-justiciability, FR-DPSP balance), landmark cases (Minerva Mills, Unnikrishnan, MC Mehta), contemporary applications (digital rights, climate justice, intersectionality), and balanced analytical framework
DPSP last-minute revision strategy: (a) Key concepts: DPSP classification (socialist, Gandhian, liberal-intellectual), non-justiciability with moral force, FR-DPSP balance (Minerva Mills) — foundational for conceptual questions, (b) Landmark cases: Minerva Mills (FR-DPSP balance, basic structure), Unnikrishnan (right to education), MC Mehta (environmental protection) — applied understanding for case-based questions, (c) Contemporary applications: Digital governance (privacy, inclusion), climate justice (environmental rights, intergenerational equity), intersectionality (compounded discrimination) — relevance for current affairs linkage, (d) Balanced analytical framework: Concept + Case + Contemporary + Critical analysis + Balanced solution — template for high-scoring Mains answers, (e) Efficiency: Focus on high-yield, integrative knowledge essential for exam success. Illustrates strategic revision: depth over breadth, application over rote, framework over facts. Essential for UPSC Mains efficient, effective preparation.
When answering DPSP questions in UPSC Mains, which framework best demonstrates analytical depth and contemporary relevance?
- List DPSP articles without explanation
- Define concept, cite landmark cases, link to contemporary issues, critically analyze strengths/challenges, propose balanced solutions
- Only criticize DPSP non-justiciability
- Only describe historical evolution without present-day application
Answer: Define concept, cite landmark cases, link to contemporary issues, critically analyze strengths/challenges, propose balanced solutions
High-scoring DPSP answer framework (UPSC Mains): (a) Define concept: DPSP = directive principles for transformative governance; non-justiciable but fundamental in governance; classification (socialist, Gandhian, liberal-intellectual) — foundational clarity, (b) Cite landmark cases: (i) Minerva Mills (FR-DPSP balance, basic structure), (ii) Unnikrishnan (right to education), (iii) MC Mehta (environmental protection), (iv) Puttaswamy (privacy as dignity), (c) Link to contemporary issues: (i) Digital governance (privacy, inclusion), (ii) Climate justice (sustainability, equity), (iii) Intersectionality (compounded disadvantage), (d) Critically analyze: Evaluate strengths (transformative potential, policy guidance) and challenges (implementation gaps, resource constraints, federal coordination), (e) Propose balanced solutions: (i) Strengthening institutional capacity for DPSP implementation, (ii) Enhancing federal coordination through Inter-State Council, NITI Aayog, (iii) Promoting rights-based, inclusive policy design reflecting DPSP values, (f) This framework demonstrates: conceptual clarity, applied knowledge, contemporary awareness, critical thinking, solution orientation — key markers for high scores in GS-II and Essay papers. Illustrates strategic answer writing: depth over breadth, application over rote, balance over extremism.
For comprehensive preparation on DPSP for competitive exams, candidates should integrate:
- Only constitutional text without case studies
- Constitutional provisions, landmark cases, legislative implementation, contemporary challenges, and comparative perspectives
- Only recent political developments without constitutional basis
- Only judicial judgments without policy or administrative context
Answer: Constitutional provisions, landmark cases, legislative implementation, contemporary challenges, and comparative perspectives
Holistic DPSP preparation strategy: (a) Constitutional provisions: Master Articles 36-51, classification (socialist, Gandhian, liberal-intellectual), non-justiciability with moral force — foundational text, (b) Landmark cases: Minerva Mills (FR-DPSP balance), Unnikrishnan (right to education), MC Mehta (environmental protection) — applied understanding, (c) Legislative implementation: RTE Act, NFSA, MGNREGA, DPDP Act — how DPSP operationalized through statutory frameworks, (d) Contemporary challenges: Digital governance (privacy, inclusion), climate justice (sustainability, equity), intersectionality (compounded disadvantage) — relevance to current affairs, (e) Comparative perspectives: Ireland (Directive Principles), South Africa (socio-economic rights), USA (legislative discretion) — contextualize Indian model, (f) Integration enables: (i) Conceptual clarity (DPSP as transformative vision), (ii) Analytical depth (evaluating implementation challenges), (iii) Contemporary application (linking provisions to current issues), (iv) Balanced answers (acknowledging complexity, proposing reforms), (g) Essential for UPSC Mains high-scoring answers in GS-II, Essay, and optional papers: Integrated understanding demonstrates conceptual mastery, analytical skills, contemporary awareness — key markers for top performance.