Study Notes for CSS NC2 Competency and Computer Systems

CSS NC2 Competency

  • Enrolled: Grade 12 Galileo

  • Wiring Voltage Codes:

    • RED: +5V

    • YELLOW: +12V

    • ORANGE: +3.3V

    • BLACK: Ground

Competency Categories

  • Basic Competencies:

    • Workplace communication

    • Teamwork

    • Career professionalism

    • Occupational health and safety

  • Common Competencies:

    • Quality standards

    • Computer operations

    • Mensuration/calculation

    • Technical drawing

    • Hand tools

    • Electrical wiring/circuits

    • Testing components

  • Core Competencies:

    • Install/configure computer systems

    • Set up networks/servers

    • Maintain/repair systems/nets

Computer Components

  • Central Processing Unit (CPU): Executes instructions and calculations

  • Motherboard: Main circuit board; connects components; contains BIOS/UEFI

  • RAM: Volatile memory; temporary data storage

  • ROM: Non-volatile; permanent data storage; BIOS storage

  • HDD vs SSD:

    • HDD: Spinning disks; lower cost

    • SSD: Flash memory; faster; higher cost

Power Supply Unit (PSU)

  • Converts AC to DC for computer use

  • CMOS Battery: Powers CMOS chip for system info storage

Graphics and Cooling

  • Graphic Processing Unit (GPU): Renders graphics; essential for multimedia

  • Cooling Systems: Maintain stable temperatures via fans, heat sinks, or liquid cooling

Computer Case/Chassis

  • Houses/protects components; aids cooling and airflow

Networking Components

  • Network Interface Card (NIC): Connects computer to network

  • Sound Card: Provides audio processing beyond onboard audio

  • Input Devices: Keyboard/mouse, convert actions to digital

  • Output Devices: Monitor/print/display results

Peripheral Devices

  • External components enhancing functionality—USB drives, external HDDs, etc.

CSS Tools & Functions

  • Crimping Tool: Joins wires/connectors

  • Wire Strippers/Cutters: Insulation removal/cutting wires

  • Punch Down Tool/RJ45 Connector: Network installation

  • LAN Cable: Provides wired connectivity

  • LAN Cable Tester: Checks integrity and errors

Occupational Health and Safety

  • Importance: Protects workers; safety compliance

  • Key Policies:

    • PPE usage

    • Electrical safety

    • Static precautions

    • Safe component handling

    • Ergonomics

    • Emergency preparedness

Installing & Configuring Systems

  • Essential tools: screwdrivers, anti-static wrist strap, thermal paste

  • Using a computer: Proper startup, navigation, and shutdown procedures

Operating System (OS) Installation

  • Roles of OS: Manages hardware, software, user interface

  • Requirements: CPU, RAM, storage

Testing & Troubleshooting

  • Purpose of Testing: Verify functionality, compatibility

  • Tools: Diagnostic software, hardware tools

Preparing Bootable Installers

  • Using Rufus: Steps to create a bootable USB flash drive

  • Other command-line methods for creating install media

General Networking Concepts

  • Protocols: DHCP, FTP, etc.

  • Networking Devices: Routers, switches, firewalls

  • Security Measures: Authentication methods, antivirus, firewalls