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Which Indian mission successfully demonstrated in-orbit docking technology in 2024?
- Gaganyaan-1
- SPADEX
- Aditya-L2
- NISAR
Answer: SPADEX
SPADEX (Space Docking Experiment) successfully demonstrated autonomous rendezvous and docking of two spacecraft in Earth orbit in 2024. Critical technology for future space station modules, satellite servicing, and human spaceflight. Represents India's advancement in complex space operations. Important for ISRO current affairs questions.
The smallest unit of data in a computer that can have a value of 0 or 1 is called a ________.
Answer: bit
Bit (binary digit) is the smallest unit of data in computing, representing either 0 or 1. Eight bits make one byte. All digital information - text, images, audio, video - is ultimately stored and processed as sequences of bits.
HTTP is a secure protocol for transmitting sensitive data like passwords and credit card information.
- True
- False
Answer: False
HTTP (HyperText Transfer Protocol) transmits data in plaintext, making it insecure for sensitive information. HTTPS (HTTP Secure) uses SSL/TLS encryption to protect data in transit. Always use HTTPS for login pages, payments, and personal data.
The process of verifying a user's identity before granting access to a system is called ________.
Answer: Authentication
Authentication is the process of verifying who a user claims to be, typically using passwords, biometrics, or tokens. It is distinct from authorization (what an authenticated user is allowed to do) and accounting (tracking user activities).
Which ISRO mission is designed to study the Sun?
- Chandrayaan-3
- Mangalyaan-2
- Aditya-L1
- Gaganyaan
Answer: Aditya-L1
Aditya-L1 is India's first dedicated solar mission, positioned at Lagrange Point 1 (L1) to study the Sun's corona, solar emissions, and space weather. Launched in 2023, it carries seven indigenous payloads for comprehensive solar observations.
Which key uniquely identifies each record in a database table?
- Foreign Key
- Candidate Key
- Primary Key
- Composite Key
Answer: Primary Key
Primary Key is a column or set of columns that uniquely identifies each row in a table. It cannot contain NULL values and must be unique. Foreign keys establish relationships between tables, while candidate keys are potential primary keys.
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.
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.
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.
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 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.
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.
The digital platform that allows citizens to store driving license, vehicle registration, and other documents electronically is called ________.
Answer: DigiLocker
DigiLocker is a cloud-based platform under Digital India that enables citizens to store, share, and verify important documents digitally. Documents issued by registered authorities through DigiLocker have legal validity under the Information Technology Act, 2000.