Common Computer Acronyms
Delhi Police Exams
Acronyms are among the most repeatedly asked topics in Delhi Police, SSC, and Defence exams. They look simple — but one wrong word can change the meaning. Let's master them smartly.
Common Acronyms and Their Full Forms
| Acronym | Full Form | Function |
|---|---|---|
| CPU | Central Processing Unit | Brain of computer; processes all instructions |
| RAM | Random Access Memory | Temporary memory for active data |
| ROM | Read Only Memory | Non-volatile memory storing BIOS & startup data |
| BIOS | Basic Input Output System | Loads OS from storage to memory during boot |
| HDD | Hard Disk Drive | Permanent storage for data |
| SSD | Solid State Drive | Faster storage device (no moving parts) |
| USB | Universal Serial Bus | Interface for external devices |
| LAN | Local Area Network | Connects computers within limited area |
| WAN | Wide Area Network | Connects computers across large regions |
| HTTP | Hyper Text Transfer Protocol | Protocol for web data transfer |
Tip: Focus on understanding the function along with the full form for better retention
PYQs & Practice Questions
What does CPU stand for?
Options: (a) Central Process Unit (b) Central Processing Unit (c) Central Printed Unit (d) Central Protocol Unit
Category: Hardware
Show Answer
Central Processing Unit
Which memory is volatile?
Options: (a) ROM (b) RAM (c) HDD (d) SSD
Category: Memory
Show Answer
RAM
Which of the following stores the boot loader program?
Options: (a) BIOS (b) RAM (c) CPU (d) HDD
Category: System Software
Show Answer
BIOS
Which device is used for permanent storage?
Options: (a) RAM (b) ROM (c) Hard Disk (d) Cache
Category: Storage
Show Answer
Hard Disk
Which of the following is an example of volatile memory?
Options: (a) ROM (b) RAM (c) Flash Drive (d) Hard Disk
Category: Memory Types
Show Answer
RAM
Memory Tricks & Quick Recall
Memory Tips:
"Real Activity = RAM (Temporary)"
"Real Organization = ROM (Permanent)"
Network Tips:
"HTTP → Web"
"SMTP → Mail, FTP → File"
Mini Revision Trick Table
| Category | Memory | Internet | File | Display/UI |
|---|---|---|---|---|
| Examples | RAM, ROM, BIOS, CPU | IP, DNS, HTTP, FTP, VPN | PDF, ZIP, DOCX | GUI, OS |
Exam Recap
20 PYQs style questions — direct Delhi Police trend
Covers every major acronym from 2020–2024 patterns
Tricks for quick recall — memory → internet → file → interface
These 1-mark questions often decide top ranks due to easy scoring
Remember: Focus on understanding the context and function of each acronym, not just memorization
Master Computer Acronyms for Delhi Police Exam!
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