Create a custom practice set
Pick category, difficulty, number of questions, and time limit. Start instantly with your own quiz.
Generate QuizTechnology – GK Questions
Free practice for SSC, UPSC, Banking & Railway exams. No login required.
Which attack exploits vulnerabilities in software by injecting malicious SQL code through input fields?
- XSS
- SQL Injection
- Buffer Overflow
- CSRF
Answer: SQL Injection
SQL Injection occurs when attackers insert malicious SQL statements into input fields to manipulate database queries. Can lead to data theft, deletion, or unauthorized access. Prevention: use parameterized queries, input validation, ORM frameworks, and least-privilege database accounts.
NoSQL databases are always better than relational SQL databases for all applications.
- True
- False
Answer: False
Database choice depends on use case. SQL (MySQL, PostgreSQL) excels at structured data, complex queries, and ACID transactions. NoSQL (MongoDB, Cassandra) is better for unstructured data, horizontal scaling, and high-velocity writes. Many systems use both (polyglot persistence) for different needs.
Which frequency band is primarily used for 4G LTE services in India?
- 700 MHz
- 1800 MHz
- 26 GHz
- 60 GHz
Answer: 1800 MHz
India's 4G LTE services primarily use 1800 MHz (Band 3) and 2300 MHz (Band 40) spectrum. 700 MHz is being rolled out for better rural coverage. 26 GHz and 60 GHz are mmWave bands considered for future 5G enhancements, not current 4G deployments.
The process of starting a computer and loading the operating system into memory is called ________.
- Booting
- Gate-All-Around / GAA
- Rain
- Tokenization
Answer: Booting
Booting is the startup sequence when a computer is powered on. BIOS/UEFI performs POST (Power-On Self-Test), locates boot device, loads bootloader, which then loads the OS kernel into RAM. Cold boot = power-on start; warm boot = restart without power cycle.
What does 'URL' stand for in web addressing?
- Universal Resource Locator
- Uniform Resource Locator
- United Resource Link
- Universal Reference Link
Answer: Uniform Resource Locator
URL (Uniform Resource Locator) is the address used to access resources on the internet. It includes protocol (http/https), domain name, path, and optional parameters. Example: https://www.example.com/page?query=1. URLs are a subset of URIs (Uniform Resource Identifiers).
Aadhaar authentication is mandatory for availing all government subsidies and services in India.
- True
- False
Answer: False
While Aadhaar is widely used for DBT and service delivery, the Supreme Court has ruled that Aadhaar cannot be made mandatory for all services. It is mandatory for PAN linkage, certain welfare schemes, and telecom verification, but alternatives must be provided for other services as per privacy judgments.
Which of the following is a strong password practice?
- Using birthdate as password
- Reusing passwords across sites
- Using 12+ characters with mix of types
- Writing password on sticky note
Answer: Using 12+ characters with mix of types
Strong passwords should be at least 12 characters long with uppercase, lowercase, numbers, and special symbols. Avoid personal info, dictionary words, or patterns. Use unique passwords per account and store them in a password manager. Enable two-factor authentication for critical accounts.
The branch of AI focused on enabling computers to understand and process human language is called ________ Processing.
- Natural Language
- Microservices
- Compressed Air Energy / CAES
- Lead-through / Teach Pendant
Answer: Natural Language
Natural Language Processing (NLP) combines linguistics, computer science, and AI to enable machines to understand, interpret, and generate human language. Applications include chatbots, translation services, sentiment analysis, voice assistants, and automated content summarization.
Which ISRO launch vehicle is designed for launching heavy communication satellites to Geosynchronous Transfer Orbit?
- PSLV
- GSLV Mk III
- SSLV
- ASLV
Answer: GSLV Mk III
GSLV Mk III (now called LVM3) is ISRO's heavy-lift launch vehicle capable of placing 4-ton class satellites into GTO. It was used for Chandrayaan-2, Chandrayaan-3, and OneWeb satellite launches. PSLV handles lighter polar orbits; SSLV is for small satellites; ASLV was retired.
A byte consists of 8 bits.
- True
- False
Answer: True
A byte is a unit of digital information that most commonly consists of 8 bits. This standard allows representation of 256 values (0-255), sufficient for ASCII characters. Larger units: Kilobyte (1024 bytes), Megabyte (1024 KB), etc. Some historical systems used different byte sizes, but 8-bit byte is now universal.
Which payment system in India enables instant money transfer using mobile number and MMID?
- NEFT
- RTGS
- IMPS
- ECS
Answer: IMPS
IMPS (Immediate Payment Service) enables instant interbank electronic fund transfer 24x7 using mobile number + MMID (Mobile Money Identifier) or account number + IFSC. Developed by NPCI, it supports transfers up to ₹5 lakh. NEFT/RTGS have timing restrictions; ECS is for bulk/recurring payments.
In programming, a loop that executes at least once regardless of condition is called a ________ loop.
- Green
- Inversion
- Artifact / Model Registry
- do-while
Answer: do-while
do-while loop checks the condition AFTER executing the loop body, guaranteeing at least one execution. In contrast, while and for loops check condition BEFORE execution, potentially skipping the body entirely if condition is initially false. Syntax varies by language but logic remains consistent.
Which authentication factor is represented by 'something you are'?
- Password
- Smart Card
- Fingerprint
- Security Token
Answer: Fingerprint
Authentication factors: 1) Something you know (password/PIN), 2) Something you have (smart card/token), 3) Something you are (biometrics like fingerprint, iris, face). Multi-factor authentication combines two or more factors for enhanced security. Fingerprint is a biometric ('something you are') factor.
Edge computing processes data closer to the source of generation rather than sending all data to centralized cloud servers.
- True
- False
Answer: True
Edge computing brings computation and data storage closer to IoT devices and data sources, reducing latency, bandwidth usage, and improving real-time processing. Critical for autonomous vehicles, industrial IoT, and smart cities where milliseconds matter. Complements, not replaces, cloud computing.
The protocol used for sending emails from a client to a server is ________.
- FAME
- SMTP
- NIDHI
- TDMA
Answer: SMTP
SMTP (Simple Mail Transfer Protocol) is used for sending emails from client to server or between mail servers. POP3 and IMAP are used for retrieving emails from server to client. SMTP typically uses port 25 (or 587 for secure submission).
Which file extension is typically associated with executable files in Windows?
- .txt
- .exe
- .jpg
Answer: .exe
.exe (executable) files contain programs that can be run directly by the Windows operating system. Users should be cautious opening .exe files from untrusted sources as they can contain malware. Other extensions: .txt (text), .pdf (document), .jpg (image) are data files, not executables.
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.
Which platform enables citizens to participate in governance by sharing ideas and giving feedback to the government?
- DigiLocker
- MyGov
- UMANG
- e-Taal
Answer: MyGov
MyGov is a citizen engagement platform launched under Digital India that allows Indians to participate in policy discussions, submit ideas, vote on proposals, and provide feedback on government initiatives. It fosters collaborative governance and transparent decision-making.
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.