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Home/Notes/Computer Knowledge & Aptitude

Board Exam Notes

Computer Knowledge & Aptitude Notes

Questions

3–5 MCQs per paper

Difficulty

Easy

Importance

High-yield, easy-scoring section for SSC and Banking

Overview

Computer Knowledge tests your familiarity with modern digital tools and the operational basics of computing systems. It is a high-scoring section in SSC and Banking exams designed to filter candidates who understand practical digital literacy over theoretical computer science. You must master keyboard shortcuts, MS Office functions, and networking protocols to solve these questions in seconds.

Computer Fundamentals and Generations

This section covers the evolution of computing hardware from vacuum tubes to microprocessors. Focus on identifying the core components of each generation and the transition from machine code to high-level programming languages.

1st Gen: Vacuum Tubes
2nd Gen: Transistors
3rd Gen: Integrated Circuits (IC)
4th Gen: Microprocessors (VLSI)
5th Gen: AI and ULSI

MS Office (Word, Excel, PowerPoint)

Questions here focus on practical application and specific keyboard shortcuts used for document formatting and data manipulation. Efficiency in Excel formulas and shortcut keys is crucial for speed.

Ctrl+N: New Document
Ctrl+K: Insert Hyperlink
F4: Repeat Last Action
Alt+F11: Open VBA Editor
Excel VLOOKUP/HLOOKUP logic

Internet, Networking, and Security

Understand the architecture of the web, including IP addressing, network topologies, and basic security threats. Security questions typically cover definitions of malware types and defensive protocols.

HTTP/HTTPS protocols
Firewall purpose
IP Address vs MAC Address
Phishing and Trojan definitions
LAN, WAN, MAN topologies

Formula Sheet

IP Addressing (Classes A, B, C, D, E)

OSI Model (Physical to Application Layer)

Exam Tip

Don't memorize hardware history; prioritize common keyboard shortcuts and file extension formats, as these account for 60% of exam questions.

Common Mistakes

Confusing shortcut keys across different MS Office versions or OS platforms
Over-analyzing technical theory instead of focusing on practical application/utility
Mixing up network protocol acronyms like SMTP, FTP, and SNMP

More Revision Notes

PSU Notes

Mixtures & Alligation

PSU Notes

Analogy & Classification

PSU Notes

Grammar & Usage

PSU Notes

Algebra & Number Systems

PSU Notes

Number & Letter Series

PSU Notes

Direction Sense

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