Create a custom practice set
Pick category, difficulty, number of questions, and time limit. Start instantly with your own quiz.
Generate QuizTechnology – Medium Level – GK Questions
Free practice for SSC, UPSC, Banking & Railway exams. No login required.
A security measure that converts sensitive data into a fixed-size string of characters, which cannot be reversed, is called ________.
- Masked
- LCH Prachand
- Hashing
- Rain
Answer: Hashing
Hashing transforms input data of any size into a fixed-length hash value using algorithms like SHA-256 or MD5. It is one-way (irreversible), used for password storage, data integrity verification, and digital signatures. Unlike encryption, hashed data cannot be decrypted to original form.
Which normal form eliminates transitive dependencies in database design?
- 1NF
- 2NF
- 3NF
- BCNF
Answer: 3NF
Third Normal Form (3NF) requires that a table is in 2NF and has no transitive dependencies (non-key attributes depending on other non-key attributes). This reduces redundancy and update anomalies. BCNF is a stricter version of 3NF handling certain edge cases in dependency relationships.
CoWIN platform was developed exclusively for COVID-19 vaccination management and cannot be repurposed for other health programs.
- True
- False
Answer: False
CoWIN is built on a modular, scalable architecture that can be repurposed for other immunization and health programs. The government has indicated plans to adapt CoWIN for routine vaccination drives, demonstrating the value of building flexible digital public infrastructure for healthcare delivery.
Which technology allows multiple users to share the same frequency band by assigning unique codes?
- FDMA
- TDMA
- CDMA
- OFDMA
Answer: CDMA
CDMA (Code Division Multiple Access) allows multiple users to transmit simultaneously on same frequency by assigning unique spreading codes. Used in 3G networks. FDMA divides frequency, TDMA divides time slots, OFDMA (used in 4G/5G) combines frequency and time division with orthogonal subcarriers.
Antivirus software can detect and remove all types of malware with 100% accuracy.
- True
- False
Answer: False
No antivirus can guarantee 100% detection due to zero-day exploits, polymorphic malware, and advanced persistent threats. Effective security requires layered approach: updated AV, firewall, patches, user awareness, backups, and behavioral analysis. Regular updates improve detection but cannot eliminate all risks.
Which NPCI initiative enables bill payments across multiple categories through a single platform?
- UPI
- BBPS
- AePS
- IMPS
Answer: BBPS
BBPS (Bharat Bill Payment System) is an integrated bill payment platform by NPCI that enables customers to pay recurring bills (electricity, water, gas, DTH, telecom) through multiple channels (online, bank branches, BCs, CSCs). Offers interoperability, instant confirmation, and grievance redressal.
A private network within an organization that uses internet protocols but is accessible only to authorized users is called an ________.
- Maintainable
- Intranet
- Ground Station
- Incident
Answer: Intranet
Intranet is a private network using TCP/IP protocols, accessible only to organization members. It hosts internal websites, documents, and applications. Extranet extends intranet to authorized external users (partners, vendors). Internet is the public global network. Firewalls protect intranets from external threats.
Defragmenting a hard disk improves the performance of SSDs significantly.
- True
- False
Answer: False
Defragmentation rearranges fragmented files on HDDs to improve read/write speed. However, SSDs have no moving parts and access data electronically, so defragmentation provides no benefit and may reduce SSD lifespan due to unnecessary write cycles. Modern OS automatically disables defrag for SSDs.
Which technology uses distributed ledger to record transactions across multiple computers?
- Cloud Computing
- Blockchain
- Edge Computing
- Quantum Computing
Answer: Blockchain
Blockchain is a decentralized, distributed ledger technology where transactions are recorded across multiple nodes, making it tamper-resistant and transparent. Beyond cryptocurrencies, it's used in supply chain, voting, identity management, and smart contracts. Key features: immutability, consensus, cryptography.
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.
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 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.
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.