Summary CAT theory grade 11 Notes

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CAT THEORY NOTES
GR 11
Topics
1. System Technologies
2. Internet and networking technologies
3. Information management
4. Social implications
5. Solution development


Contents
System Technologies and implications...................................................................................................2
Module it’s all about ICT....................................................................................................................2
Input and output................................................................................................................................4
Input..................................................................................................................................................4
Output...............................................................................................................................................6
Storage Memory and Processing:......................................................................................................9
Software...........................................................................................................................................12
Information Management:..................................................................................................................14
Computer management...................................................................................................................14
Social implications...............................................................................................................................16
The dark side of computing.............................................................................................................16
Network and internet technologies.....................................................................................................18
Terminology.........................................................................................................................................21




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System Technologies and implications
Module it’s all about ICT

ICT in Information Processing:
- Data Entry: Inputting information into computer systems efficiently
- Data Analysis: Utilizing ICT tools to analyze and interpret data for decision-
making

ICT and Effective Communication:
- Quick Communication: ICT facilitates swift communication with stakeholders
- Collaboration: Enhances effective collaboration among employees and project
teams

Drawbacks of ICT:
- Security Risks: Potential vulnerabilities leading to unauthorized access or data
breaches
- Ergonomic Risks: Prolonged use of ICT devices may lead to physical strain or
health issues

ICT-Related Careers and Skills:
- Software Development: Creating and maintaining computer programs
- Web Development: Building and managing websites
- IT Support: Providing technical assistance
- Data Analysis: Analyzing and interpreting data
- Graphic Design: Creating visual content using ICT tools

Dedicated Devices vs General-Purpose Computers:
- Dedicated Devices: Specific tasks (eg, smartphones)
- General-Purpose Computers: Versatile tasks (eg, desktops, laptops)

Role of Memory in Computer Power:
- More Memory: Enables storage of data and concurrent program execution

Hardware Specifications Affecting Computer Power:
- Processor Speed
- Graphics Card Type
- Storage Space

Advantages of Laptops over Desktops:
- Portability
- Compact Size

Preserving Laptop Battery Life:
- Reduce Screen Brightness
- Turn Off Unnecessary Features
- Use Power Saving Mode


Convergence in Smartphones:
- Combining phone, camera, and computer features in one device

Smartphone Operating Systems:


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- Android
- iOS


Additional Smartphone Features:
- GPS
- NFC
- Bluetooth

Choosing a Computer for Research:
- A server is unsuitable; it's designed for network services, not individual tasks

Disabling USB Ports in Organizations:
- Prevents unauthorized access and malware spread

Micro-USB Definition and Device:
- Smaller USB connector found in smartphones, tablets, and cameras

Preventing Computer Theft in the Workplace:
- Security cable attaches laptops to fixed objects

Enhancing Data Security with Encryption:
- Encrypts data to ensure it's unreadable without the decryption key

Off-Site Backup Importance:
- Protects backups from physical disasters like fires or floods

Reasons to Consider Purchasing a UPS:
- Protects from power surges
- Provides backup power during outages

Server and Clients:
Server is powerful computer that provides services and resources to clients
Client is a computer that uses services and resources from server




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