Computer Abbreviations
Key Concepts & Formulas
Provide 5-7 essential concepts for Computer Abbreviations:
| # | Concept | Quick Explanation |
|---|---|---|
| 1 | URL | Uniform Resource Locator - web address format (protocol://domain/path) |
| 2 | HTTP vs HTTPS | HyperText Transfer Protocol (Secure) - HTTPS adds SSL/TLS encryption |
| 3 | CPU Components | ALU (Arithmetic Logic Unit) + CU (Control Unit) + Registers = CPU brain |
| 4 | Memory Hierarchy | Cache (fastest) → RAM → ROM → Secondary Storage (slowest) |
| 5 | I/O Devices | Input (keyboard/mouse) vs Output (monitor/printer) vs I/O (touchscreen) |
| 6 | Network Types | LAN (Local), MAN (Metropolitan), WAN (Wide Area Network) |
| 7 | File Extensions | .exe (executable), .pdf (document), .jpg (image), .mp4 (video) |
10 Practice MCQs
Q1. What does "WWW" stand for in a website address? A) World Wide Web B) World Wireless Web C) Wide Web World D) Web Wide World
Answer: A) World Wide Web
Solution: WWW is the full form used before domain names. It’s a system of interlinked hypertext documents accessed via the Internet.
Shortcut: Remember “World Wide Wait” - old joke about slow internet, but helps recall WWW
Concept: Computer Abbreviations - Internet Basics
Q2. The abbreviation "PDF" stands for: A) Portable Document Format B) Printed Document File C) Public Data Format D) Portable Data File
Answer: A) Portable Document Format
Solution: PDF is Adobe’s file format that preserves document formatting across devices. Used for railway e-tickets and forms.
Shortcut: “PDF = Paper Doesn’t Fold” - format stays same everywhere
Concept: Computer Abbreviations - File Formats
Q3. What does "USB" stand for? A) Universal Serial Bus B) United System Bus C) Universal System Bus D) United Serial Bus
Answer: A) Universal Serial Bus
Solution: USB is the standard connection interface for peripherals. Railway ticket printers use USB connections.
Shortcut: “U-S-B = You-See-Bee” - phonetic memory aid
Concept: Computer Abbreviations - Hardware Interfaces
Q4. In railway reservation systems, "CRIS" stands for: A) Centre for Railway Information Systems B) Central Railway Information Service C) Computerized Railway Information System D) Centre for Rail Information Services
Answer: A) Centre for Railway Information Systems
Solution: CRIS develops IRCTC software and PRS (Passenger Reservation System). Headquartered in New Delhi.
Shortcut: “CRIS = Railway’s IT brain” - develops all computer systems
Concept: Computer Abbreviations - Railway-specific
Q5. The "OS" in computer terminology refers to: A) Operating System B) Operational Software C) Output System D) Order System
Answer: A) Operating System
Solution: OS manages hardware-software interaction. Railway servers use Linux/Windows OS for operations.
Shortcut: “OS = Boss of Computer” - controls everything
Concept: Computer Abbreviations - System Software
Q6. What does "HTML" stand for in web development? A) HyperText Markup Language B) High Tech Modern Language C) Home Tool Markup Language D) Hyper Transfer Markup Language
Answer: A) HyperText Markup Language
Solution: HTML creates web pages using tags. IRCTC website uses HTML for structure.
Shortcut: “HTML = How To Make Layout” - it’s page skeleton
Concept: Computer Abbreviations - Web Technologies
Q7. In database systems, "SQL" stands for: A) Structured Query Language B) Standard Query Language C) System Query Language D) Sequential Query Language
Answer: A) Structured Query Language
Solution: SQL manages railway databases - passenger records, train schedules. Commands: SELECT, INSERT, UPDATE.
Shortcut: “SQL = Seek Query Language” - used to seek data
Concept: Computer Abbreviations - Database Management
Q8. The abbreviation "BIOS" in computers means: A) Basic Input Output System B) Binary Input Output System C) Basic Integrated Operating System D) Binary Integrated Operating System
Answer: A) Basic Input Output System
Solution: BIOS is firmware that initializes hardware during boot. Stored in motherboard chip.
Shortcut: “BIOS = Computer’s Morning Alarm” - wakes up system
Concept: Computer Abbreviations - System Firmware
Q9. What does "VPN" stand for in network security? A) Virtual Private Network B) Virtual Protected Network C) Verified Private Network D) Virtual Public Network
Answer: A) Virtual Private Network
Solution: VPN creates secure tunnel over internet. Railway officers use VPN for secure access to internal systems.
Shortcut: “VPN = Very Private Network” - keeps data secret
Concept: Computer Abbreviations - Network Security
Q10. In cloud computing, "SaaS" stands for: A) Software as a Service B) System as a Service C) Security as a Service D) Storage as a Service
Answer: A) Software as a Service
Solution: SaaS provides software over internet. Railway uses cloud services for data analytics and passenger apps.
Shortcut: “SaaS = Software on Rent” - pay per use model
Concept: Computer Abbreviations - Cloud Computing
5 Previous Year Questions
PYQ 1. What is the full form of "WiFi" used in wireless internet? RRB NTPC 2021 CBT-1
Answer: Wireless Fidelity
Solution: WiFi is trademark for WLAN based on IEEE 802.11 standards. Railway stations provide free WiFi.
Exam Tip: Don’t confuse with “Wireless File” - it’s always “Fidelity”
PYQ 2. The abbreviation "LAN" stands for: RRB Group D 2022
Answer: Local Area Network
Solution: LAN connects devices within limited area like railway office building. Speed: 10-1000 Mbps.
Exam Tip: Remember “L = Local” - covers small geographical area
PYQ 3. What does "GHz" represent in processor speed? RRB ALP 2018
Answer: GigaHertz
Solution: 1 GHz = 10⁹ cycles/second. Modern railway servers use 3.0+ GHz processors for fast data processing.
Exam Tip: “Giga = Billion” - higher GHz = faster processing
PYQ 4. In computer memory, "GB" stands for: RRB JE 2019
Answer: GigaByte
Solution: 1 GB = 1024 MB = 1024×1024 KB. Railway’s central server has 500+ GB RAM for peak booking hours.
Exam Tip: Binary system: 1 GB = 2³⁰ bytes = 1,073,741,824 bytes
PYQ 5. The "PIN" in ATM transactions stands for: RPF SI 2019
Answer: Personal Identification Number
Solution: 4-6 digit code for secure transactions. Railway ATMs at stations require PIN for cash withdrawal.
Exam Tip: Never share PIN - it’s personal security key
Speed Tricks & Shortcuts
| Situation | Shortcut | Example |
|---|---|---|
| HTTP vs HTTPS | S = Secure (look for lock icon) | Railway payment gateway: https://irctc.co.in ✅ |
| Memory Units | “Bigger eats Smaller” hierarchy | KB → MB → GB → TB (each ×1024) |
| Network Types | “Distance increases: LAN-MAN-WAN” | LAN (office) → MAN (city) → WAN (country) |
| File Extensions | “First letter gives clue” | .doc = Document, .jpg = Joint Photo Group |
| Hardware vs Software | “Touch test” | Can touch = Hardware (keyboard), Can’t touch = Software (Windows) |
Common Mistakes to Avoid
| Mistake | Why Students Make It | Correct Approach |
|---|---|---|
| Confusing MB with Mb | Ignoring case sensitivity | MB = MegaByte (8 bits), Mb = Megabit (1 bit). 1 MB = 8 Mb |
| ROM vs RAM | Thinking both are temporary | ROM = Read Only (permanent), RAM = Random Access (temporary) |
| WWW vs Internet | Using terms interchangeably | Internet = network, WWW = service running on internet |
| GHz vs GB | Mixing speed vs storage | GHz = processor speed, GB = storage capacity |
| SQL vs Sequel | Wrong pronunciation | SQL = “S-Q-L” (letters), not “sequel” though both used |
Quick Revision Flashcards
| Front (Question/Term) | Back (Answer) |
|---|---|
| Portable Document Format - preserves formatting | |
| CPU | Central Processing Unit - computer’s brain |
| URL | Uniform Resource Locator - web address |
| HTML | HyperText Markup Language - web page creator |
| USB | Universal Serial Bus - connection standard |
| LAN | Local Area Network - limited area network |
| WAN | Wide Area Network - large geographical area |
| OS | Operating System - software manager |
| RAM | Random Access Memory - temporary memory |
| ROM | Read Only Memory - permanent memory |
Topic Connections
How Computer Abbreviations connects to other RRB exam topics:
- Direct Link: Railway reservation system (PRS, IRCTC) uses all computer abbreviations
- Combined Questions: Often asked with Current Affairs (Digital India, railway computerization)
- Foundation For: Understanding railway’s digital transformation and modern ticketing systems
BETA
