IT Abbreviations Explained for Beginners | Most Asked in Interviews

Important IT & computer-related words with their full forms — useful for School, College, Competitive Exams, and Interviews.


COMPUTER - Common Operating Machine Purposely Used for Technological and Educational Research
IT – Information Technology
CPU – Central Processing Unit
ALU – Arithmetic Logic Unit
CU – Control Unit
RAM – Random Access Memory
ROM – Read Only Memory
HDD – Hard Disk Drive
SSD – Solid State Drive
JPG/JPEG – Joint Photographic Experts Group
PNG – Portable Network Graphics
USB – Universal Serial Bus
VDU – Visual Display Unit
UPS – Uninterruptible Power Supply
BIOS – Basic Input Output System
CMOS – Complementary Metal Oxide Semiconductor
CD – Compact Disc
DVD – Digital Versatile Disc
LED – Light Emitting Diode
LCD – Liquid Crystal Display
SMPS – Switched Mode Power Supply
NIC – Network Interface Card
GPU – Graphics Processing Unit
OCR – Optical Character Recognition
OMR – Optical Mark Recognition
MICR – Magnetic Ink Character Recognition
VGA – Video Graphics Array
HDMI – High Definition Multimedia Interface
PSU – Power Supply Unit
CPU – Central Processing Unit
PC – Personal Computer
LAPTOP – Light Analytical Platform Total Optimized Power
PDA – Personal Digital Assistant
PROM – Programmable Read Only Memory
EPROM – Erasable Programmable Read Only Memory
EEPROM – Electrically Erasable Programmable Read Only Memory
KVM – Keyboard Video Mouse
CRT – Cathode Ray Tube
DPI – Dots Per Inch
RFID – Radio Frequency Identification
IoT – Internet of Things
LAN – Local Area Network
WAN – Wide Area Network
MAN – Metropolitan Area Network
PAN – Personal Area Network
WLAN – Wireless Local Area Network
SAN - Storage Area Network
IP – Internet Protocol
TCP – Transmission Control Protocol
UDP – User Datagram Protocol
HTTP – Hypertext Transfer Protocol
HTTPS – Hypertext Transfer Protocol Secure
FTP – File Transfer Protocol
SFTP – Secure File Transfer Protocol
SMTP – Simple Mail Transfer Protocol
POP – Post Office Protocol
IMAP – Internet Message Access Protocol
ISP – Internet Service Provider
DNS – Domain Name System
URL – Uniform Resource Locator
WWW – World Wide Web
VPN – Virtual Private Network
MAC – Media Access Control
NAT – Network Address Translation
DHCP – Dynamic Host Configuration Protocol
SCCM - System Center Configuration Manager
IBCM - Internet-based client management
CMD - Command Prompt
AD - Active Directory
DC - Domain Controller
ADDS - Active Directory Domain Services
ADFS - Active Directory Federation Services
ADCS - Active Directory Certificate Services
ADLDS - Active Directory Lightweight Directory Services
ADRMS - Active Directory Rights Management Services
ADAC - Active Directory Administrative Center
ADUC - Active Directory Users and Computers
OU - Organizational Unit
GPO - Group Policy Object
GC - Global CatLog
KDC - Key Distribution Center
SID - Security Identifier
UPN - User Principal Name
DN - Distinguished Name
FQDN - Fully Qualified Domain Name
SMTPs - Simple Mail Transfer Protocol secure
SAM - Security Accounts Manager
RODC - Read-Only Domain Controller
RAID - Redundant Array of Independent Disks
NAS - Network Attached Storage
LDAP - Lightweight Directory Access Protocol
LDAPs - Lightweight Directory Access Protocol over SSL/TLS
NTFS - New Technology File System
UAC - User Account Control
IIS - Internet Information Services
CGI - Common Gateway Interface
ACL - Access Control List
QoS - Quality of Service
FSMO - Flexible Single Master Operations
ARP – Address Resolution Protocol
ICMP – Internet Control Message Protocol
VoIP – Voice over Internet Protocol
CDN – Content Delivery Network
SSH – Secure Shell
Telnet – Teletype Network
GPRS – General Packet Radio Service
GSM – Global System for Mobile Communication
LTE – Long Term Evolution
5G – Fifth Generation
4G – Fourth Generation
Wi-Fi – Wireless Fidelity
WAP – Wireless Application Protocol
NFC – Near Field Communication
Bluetooth – Wireless Communication Standard
ISP – Internet Service Provider
ISP – Internet Service Provider
MPLS – Multi Protocol Label Switching
RDP – Remote Desktop Protocol
SIP – Session Initiation Protocol
SNMP – Simple Network Management Protocol
TLD – Top Level Domain
ISP – Internet Service Provider
ICANN – Internet Corporation for Assigned Names and Numbers
IEEE – Institute of Electrical and Electronics Engineers
OS – Operating System
GUI – Graphical User Interface
CLI – Command Line Interface
UI – User Interface
UX – User Experience
IDE – Integrated Development Environment
SDK – Software Development Kit
API – Application Programming Interface
DBMS – Database Management System
RDBMS – Relational Database Management System
SQL – Structured Query Language
PL – Programming Language
OOP – Object Oriented Programming
JVM – Java Virtual Machine
JRE – Java Runtime Environment
JDK – Java Development Kit
PHP – Hypertext Pre-processor
XML – Extensible Markup Language
JSON – JavaScript Object Notation
AJAX – Asynchronous JavaScript and XML
HTML – Hypertext Markup Language
CSS – Cascading Style Sheets
JS – JavaScript
ASP – Active Server Pages
PDF - Portable Document Format
DOCX - Microsoft Word Open XML Document
RTF - Rich Text Format
TXT - Plain Text File
ODT - OpenDocument Text Document 
GIF - Graphics Interchange Format
TIFF / TIF - Tagged Image File Format
BMP - Bitmap Image File
SVG - Scalable Vector Graphics 
MP4 - MPEG-4 Video File 
AVI - Audio Video Interleave
MOV - Apple QuickTime Movie
WMV - Windows Media Video
MP3 - MPEG Audio Layer III
WAV - Waveform Audio File 
HTML - Hypertext Markup Language
SQL - Structured Query Language 
EXE - Executable File
MSI - Windows Installer Package 
DLL - Dynamic Link Library
BAT - Batch File
APK - Android Package 
XLSX - Microsoft Excel Open XML Spreadsheet
CSV - Comma-Separated Values
ZIP - Zig-zag Inline Package 
RAR - Roshal Archive
ISO - International Organization for Standardization
CMS – Content Management System
ERP – Enterprise Resource Planning
CRM – Customer Relationship Management
SCM – Supply Chain Management
SaaS – Software as a Service
PaaS – Platform as a Service
IaaS – Infrastructure as a Service
DevOps – Development and Operations
CI – Continuous Integration
CD – Continuous Deployment
VM – Virtual Machine
VDI – Virtual Desktop Infrastructure
PWA – Progressive Web App
REST – Representational State Transfer
SOAP – Simple Object Access Protocol
MVC – Model View Controller
IDE – Integrated Development Environment
ORM – Object Relational Mapping
SEO – Search Engine Optimization
SEM – Search Engine Marketing
SDK – Software Development Kit
RAD – Rapid Application Development
UML – Unified Modelling Language
SDK – Software Development Kit
CLI – Command Line Interface
AI – Artificial Intelligence
ML – Machine Learning
DL – Deep Learning
NLP – Natural Language Processing
CV – Computer Vision
IDS – Intrusion Detection System
IPS – Intrusion Prevention System
SSL – Secure Sockets Layer
TLS – Transport Layer Security
MFA – Multi Factor Authentication
SSO - Single Sign-On
OTP – One Time Password
PIN – Personal Identification Number
CAPTCHA – Completely Automated Public Turing test to tell Computers and Humans Apart
DDoS – Distributed Denial of Service
DOS – Denial of Service
IAM – Identity and Access Management
SIEM – Security Information and Event Management
SOC – Security Operations Center
PKI – Public Key Infrastructure
RSA – Rivest Shamir Adleman
AES – Advanced Encryption Standard
SHA – Secure Hash Algorithm
MD5 – Message Digest Algorithm 5
AIoT – Artificial Intelligence of Things
RPA – Robotic Process Automation
AR – Augmented Reality
VR – Virtual Reality
MR – Mixed Reality
XR – Extended Reality
BCI – Brain Computer Interface
GIS – Geographic Information System
GPS – Global Positioning System
CAD – Computer Aided Design
CAM – Computer Aided Manufacturing
CAE – Computer Aided Engineering
OCR – Optical Character Recognition
DTP – Desktop Publishing
ICT – Information and Communication Technology
EDI – Electronic Data Interchange
B2B – Business to Business
B2C – Business to Consumer
C2C – Consumer to Consumer
E-Commerce – Electronic Commerce
P2P – Peer to Peer
CDN – Content Delivery Network
CLI – Command Line Interface
GUI – Graphical User Interface
API – Application Programming Interface
DB – Database
IDE – Integrated Development Environment
ITES – Information Technology Enabled Services
UAT – User Acceptance Testing


Subscribe to my YouTube channel: www.youtube.com/@Stack_Tech

Comments

Post a Comment

Popular posts from this blog

Active Directory Overview (Windows Server) for Interview Preparation

Image
What is Active Directory ? Active Directory (AD) is Microsoft's directory service used to Manage below Network objects and Resources Manage users Manage Computers Manage Groups Control access to resources apply security policies     We can call AD as : A centralized brain of windows network Without AD: Every computer has its own users Passwords aren't Shared Policies must be configured one-by-one. With AD: one login works everywhere. Permission are controlled centrally. Security is enforced automatically. Active Directory Web Services Port number : 9389 Why Active Directory Exists ? Imagine a company having 1000 Employees: Without AD 1000 local accounts per Server. Manual access control. No central security. Difficult to Manage. With AD: One user account per employee login from any company PC Central password rules Easy onboarding or Offboarding Core Components of Active Directory ? Domain Domain Controller (DC) Objects Organizational units (OUs) Domain : A domain is a logica...
Read more

Desktop Support Interview Q&A (Beginner Level)

Image
1) What is active directory? Active directory authorizes and authenticates all users and computers in a window domain network, ensuring the security of the computer and software. Through active directory various functions can be managed like creating admin users, connecting to printers or external hard drives.   2) What is DHCP and what it is used for? DHCP stands for dynamic host configuration protocol. It is used to allocate IP addresses to a large number of the computer system in a network.   It helps in managing the large number of IPs very easily.   3) What is scope and super scope? Scope consists of an IP address like gateway IP, subnet mask, DNS server IP. It can be used to communicate with the other PCs in the network. The super scope becomes when you combine two or more scopes together.   4) What is DNS? DNS mean Domain Naming Service, and it is used for resolving IP addresses to name and names to IP address. DNS is like a translator for ...
Read more