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Which device connects multiple computers in a local network and forwards data to specific destinations?
- Hub
- Switch
- Modem
- Repeater
Answer: Switch
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.
The technology that overlays digital information onto the real world through smartphone cameras is called ________ Reality.
Answer: Augmented
Augmented Reality (AR) superimposes computer-generated images, sounds, or data onto the real-world environment. Unlike VR which creates fully immersive digital environments, AR enhances reality. Applications include gaming, education, retail, and navigation.
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.
SSD (Solid State Drive) has moving mechanical parts like traditional hard disks.
- True
- False
Answer: False
SSDs use flash memory chips with no moving parts, making them faster, more durable, and quieter than HDDs (Hard Disk Drives) which use spinning platters and mechanical read/write heads. SSDs are now standard in most modern computers.
The platform that enables cashless transactions using virtual payment addresses in India is called ________.
Answer: UPI
UPI (Unified Payments Interface) enables instant bank-to-bank transactions using virtual payment addresses (e.g., name@bank). Developed by NPCI, it supports peer-to-peer and merchant payments, bill payments, and integrates with multiple banking apps.
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.
Chandrayaan-2 successfully landed on the Moon's surface in 2019.
- True
- False
Answer: False
Chandrayaan-2's lander Vikram lost communication during final descent and crash-landed on the Moon in September 2019. However, the orbiter component was successfully placed in lunar orbit and continues to provide valuable scientific data.
A network security system that monitors and controls incoming/outgoing traffic based on predetermined rules is called ________.
Answer: Firewall
Firewall is a network security device/software that monitors and filters traffic between trusted internal networks and untrusted external networks based on security rules. It can be hardware-based, software-based, or cloud-based.
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.
RuPay is a domestic card payment network developed by NPCI in India.
- True
- False
Answer: True
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.
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.
The unique address assigned to each device on a network for identification is called ________ Address.
Answer: IP
IP (Internet Protocol) Address is a numerical label assigned to each device connected to a network. IPv4 uses 32-bit addresses (e.g., 192.168.1.1), while IPv6 uses 128-bit addresses to accommodate the growing number of internet-connected devices.
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.
Using the same password for multiple accounts is a recommended security practice.
- True
- False
Answer: False
Using the same password across multiple accounts is highly risky. If one account is breached, attackers can access all accounts with the same credentials. Best practice: use unique, strong passwords for each account and enable two-factor authentication.
The brain of the computer that executes instructions is called ________.
Answer: CPU
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.
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.
Blockchain technology can only be used for cryptocurrencies like Bitcoin.
- True
- False
Answer: False
Blockchain has diverse applications beyond cryptocurrency: supply chain tracking, digital identity, voting systems, healthcare records, land registries, and smart contracts. Its core value is providing decentralized, tamper-proof, transparent record-keeping.
The Indian regional navigation satellite system is called ________.
Answer: NavIC
NavIC (Navigation with Indian Constellation), formerly IRNSS, is India's independent regional satellite navigation system providing accurate position information over India and 1500 km around. It consists of 7 satellites and is an alternative to GPS.
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.
An operating system is an example of application software.
- True
- False
Answer: False
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.